Great Dane excavating co.

[RCP57]

I think you guys should all rent a bus and a huge cargo trailer, then cross the boarder into Canada. I need to figure out something special enough for all of you to want to come out west though. Hmmmm....

[bigford]

or you could head east in auguest!!

[RCP57]

Yeah I guess I already have a cargo trailer and a truck and camper. Maybe I can put up a "go fund me page" to raise the gas money.:lol:

[Cooper]

Hey a kick starter project, " fund my fun, and some new machines to build machines". Lol!!!

[Mikem]

Booked my vacation time today ! This sounds like it's going to be more fun than a train show ! Mike

[bigford]

stirring up the cr@p
https://youtu.be/tiug2AOljNs

[Cooper]

Your train wreck mad me mad!!!!
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/070457F1-FAE2-4399-A110-9C4028FCC0F1_zpsibofbrep.png (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/070457F1-FAE2-4399-A110-9C4028FCC0F1_zpsibofbrep.png.html)

HAHAHAHAH

[Cooper]

Ok back to tires,,,

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/0A84C368-2998-4125-8277-E9814A0A2691_zpsrdsifgz7.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/0A84C368-2998-4125-8277-E9814A0A2691_zpsrdsifgz7.jpg.html)

I have the four pieces printed, still have to glue them together, sand, fill, do whatever to make them mold ready. I did find alumalite resins and mold making supply. I'm not completely sure what products to use but an email to them and hopefull they will help me out. I know why custom tires are expensive. Any of the materials use to make tires this size are not too bad for small parts but I'm gonna need the gallon size and it like 100$ so I could easily see something like this (each tire) costing 40-50$ by the time mold is made, work in making it, the actual material for the pour, ect,, as the saying go " ya gotta pay to play"!!! But if I come up with something that works I may be able to make a couple more.

[ihbuilder]

I would need some 13" in dia.

[Cooper]

I would need some 13" in dia.

Ahh right away, 8" aren't big enough!!! Lol!! Guess you have a 797 in mind? I'll work the bugs out with these. :)

[RCP57]

The way my threads have been going today I have some off the cuff comments about the cat on your face but I'll keep them to myself:cop:. Your thread has gotten back on track so we'll keep it that way.

The tire looks wicked! You've inspired me to ask Santa for a printer at Xmas. I won't know how to use it but it will be fun to watch it melt weed eater string into blobs.:D

[speedy8305]

Cool looking Tires Cooper keep up the good work looking forward to the end result.

[Cooper]

The way my threads have been going today I have some off the cuff comments about the cat on your face but I'll keep them to myself:cop:. Your thread has gotten back on track so we'll keep it that way.

The tire looks wicked! You've inspired me to ask Santa for a printer at Xmas. I won't know how to use it but it will be fun to watch it melt weed eater string into blobs.:D

Looks like a great mustache hu? Although not at the theme park, no rides available. Oh derailed again, guess I'll have to scroll up a bit and watch the video again. Lol!!

For me, the printer is inside the house and not in garage, out of sight out of mind. Several times I have sat in garage thinking how nice it would be if I could just whip up some complex/simple part,,,,,, and then I remember ,,,I can,,,,, I just have to re learn how to use the design program. I did switch to autodesk fusion 360. It's a trial for 30 days and then 300$ a year, cloud based stuff but does all the things the 3000$ software does that I would need. But....., another thing I have to learn. A lot of features, definately have been watching a few tutorials and realizing if I can get a pretty good working knowledge I would be set and able to make whatever I need.

[speedy8305]

Hey Cooper you can get fusion 360 for free for life check around youtube. I did and now I have it on my comp for free I think you have to register it for hobby use or something else dont remember but check it out. just letting you know

[bigford]

around page 100 of this thread you will see cooper caterpillar open fer bizz
with supermario working for him!!!!

[Bo Wallen]

You're right BigFord !!! What a team that would be. Both kids doing amazing thing for sure. Can't wait speed it up please. :D

[ihbuilder]

Ahh right away, 8" aren't big enough!!! Lol!! Guess you have a 797 in mind? I'll work the bugs out with these. :)

The lil woman wants the biggest made by bucyrus before cat aquired them . So yea a 797 electric drive . I got a rope shovel in engineering stages to load it .

[modelman]

The tire looks great cooper. Should mold well. And yes, a tire this size will be expensive!!

[modelman]

The lil woman wants the biggest made by bucyrus before cat aquired them . So yea a 797 electric drive . I got a rope shovel in engineering stages to load it .

You have my attention steve. I would love to see you build a rope shovel!

[RCP57]

Come on, you've got this far so make up a tubeless tire! Think of all the money saved on liquid rubber. I've seen where guys have glued Clod tires to the rims and inserted valve stems. If you could put a metal ring in the bead area and cast around it you'd be set! Honestly speaking, how much harder would it be to cast a hollow tire and run a tube? Think about the tires Dad's Garage used on his haul truck. Tubes are available cheap about the size you would need. Probably better to cast solid rubber but how cool would it be to make your own pneumatic tires?

[Cooper]

Humm, tube/ tubeless tires?!?! That would be cool!! Maybe for the next project and some more experience on casting stuff :).

Well I started welding the tire parts together.
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/0A84C368-2998-4125-8277-E9814A0A2691_zpsrdsifgz7.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/0A84C368-2998-4125-8277-E9814A0A2691_zpsrdsifgz7.jpg.html)
Made a center piece for glueing the parts together. The aluminum was just shy of being able to use to make the rim. So have to get some more stock.
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/E0235CF5-560D-4ADF-8ECB-F11B5718CE1F_zpsj6oidxjz.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/E0235CF5-560D-4ADF-8ECB-F11B5718CE1F_zpsj6oidxjz.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/B600A5A7-EF4E-4E06-A3F3-FEFCEBB88EBA_zps7jxm1hia.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/B600A5A7-EF4E-4E06-A3F3-FEFCEBB88EBA_zps7jxm1hia.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/100DC778-E742-4F78-B64B-A72D422EFA26_zps4bxcavez.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/100DC778-E742-4F78-B64B-A72D422EFA26_zps4bxcavez.jpg.html)

And the shop fox kept wanting to be nosey so he was sniffing the acetone I was using to glue tire with.
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/F6850FD0-1EAC-4EAE-A8C8-B0D51FC5A458_zpsvckn9iib.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/F6850FD0-1EAC-4EAE-A8C8-B0D51FC5A458_zpsvckn9iib.jpg.html)


( just for the record the cat wasn't huffing glue. Don't want an animal cruelty case!)

[speedy8305]

Looking good Cooper Looks like when you finish it will be a winner.

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/23D4C4E6-DCEE-4AB8-AF34-62570E297EBA_zpsy2q9ixuy.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/23D4C4E6-DCEE-4AB8-AF34-62570E297EBA_zpsy2q9ixuy.jpg.html)
Oh and picked up a vacuum pump and harbor fright. Got it for de-gassing molds and casting resins. Quite a few times in the past I could have used one (and some gauges) for repairing/charging air units so it's not all hobby based purchase:)

[Old Guy]

Cooper
Back to the double acting stage cylinder, we tried to come up with a way to feed oil from the bottom but were never able to feed oil from that end for retracting. But I'll keep watching to see how you do it.
Aren't tires fun I did a set for my Letourneau L2350 like you I made a master using some old tires I had then coated it with about a 1/4" of urethane, ( Pink color) I then made 2 plaster aparis (spell ?) outside cavities, to hold molds from deforming. Next I made some urethane foam center cores suspended by a solid core where rims go to save the amount of tire material required. Procedure, place bottom mold in place with center core then foam, then top mold with ports to but in tire material, plaster parts had pins to make sure they lined up. Once cured opened molds pulled out tire trimed off ports and placed this side on the inside when mounted on model. Turned out great tires were made of Smooth On products and with foam core I didn't need to put anything inside tires to stop compressing by models weight. hope this will give you some ideas. Oldguy is true all my friend have been retire 10 years or more.
Earl

[Cooper]

Thanks again earl, I probably won't get to mess with this stuff till after weekend. I'll try and make something up for what I'm thinking for double acting cylinder. And yes I have been thinking of some sort of core for these as a lot of casting material will be needed. And I have to make 6. Figure this is the first of a few mess ups I'm sure :) m

[andyathome]

those tyres are looking awesome, just a thought in the moulding process.
I don't know what you guys call them over there , but we call them pool noodles.
once you make the mould , if you were to glue the foam pool noodle to the centre hub and then cast the tyre you would use less rubber and also achieve a hollow tyre that you could then fit the air valve..

now that would be cool!

cheers andy

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/A5DC6E05-0EB9-4779-A588-933115C3EE52_zpsrbengbrb.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/A5DC6E05-0EB9-4779-A588-933115C3EE52_zpsrbengbrb.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/7F1AAAAC-B66C-4FA7-8A30-E144DAF665D9_zpsoroqtf94.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/7F1AAAAC-B66C-4FA7-8A30-E144DAF665D9_zpsoroqtf94.jpg.html)
Had some home time this evening and made two round blanks to ride in the bead area of tire. The bolt holds them together. The reason I did this is I'm going to use the acetone vapor bath to smooth any lines out. From past experiences in this the bottom always seems to get more of the vapors. As I only have done acetone in bucket ( bottom liquid and soaked towel on top, both techniques) this time I have a electric heat plate to vaporize acetone but still want the ability to invert wheel half way through process. If I knew what I was doing things would not be so stressful as a good bit of time involved in this so far and if I melt it I'll be ,, well we all know how that works!!! Lol!!!

[Cooper]

Andy I have thought about displacing some material with cheeper means on the inside of tire. That may be a bit more advanced than I've got yet. That would really require a three part mold. As the mold part on the inside of tire would have to be secured/suspended during casting and then on removal from mold a three part would be better (I think) :). And they may be a little bit more casting material but it will also end up more added weight. I would imagine each tire will be weighing around 2-3 pounds. Just a uneducated guess right now. I'm not even sure the casting resin I am getting is the right hardness. Won't really know till I make one :). I'm shooting for a shore hardness of 60 that should be like a sneaker bottom. Softer than a super gummy tire.

[Cooper]

Oh and some good redneck engineering=== metal 5gallon bucket with a puddle of acetone in bottom, electric hot plate for a nice gentle heat source to vaporize acetone, all in a toasty garage with open flame gas heater on wall!!! What could go wrong? I guess I should record the process ;)

[RCP57]

Is that a "Cooper" tire?:lol::lol::rolleyes:

Sorry way too many hours in the shop over the last two weeks... Mold looks awesome!

[Cooper]

Is that a "Cooper" tire?:lol::lol::rolleyes:

Sorry way too many hours in the shop over the last two weeks... Mold looks awesome!

:lol::lol::lol: yes Cooper heavy haul tires, new market they are getting into. a tire company that makes mining equipment!!!! :lol::lol::lol:








Smarta$$ :jaw::lol:

[modelman]

Cooper-your tire plug looks good. Have you decided how you will mold it? After I made mine I figured out a way to make it in to equal halves by using one mold. Make the mold come to the exact centerline of the tire, then pour that part and let dry. Then remove it from the mold and pour the other half and drop the cured half on top while it is wet and the tire will be bonded together. You will need a "key" on the tire and mold to line up the 2nd. half but it should work. If you do it this way you will need a leveling table to have the mold exactly level when pouring. BE CAREFUL WITH THAT ACETONE!!!

[Mikem]

If they don't work out they would be awesome flatcar loads ! Mike

[Cooper]

Cooper-your tire plug looks good. Have you decided how you will mold it? After I made mine I figured out a way to make it in to equal halves by using one mold. Make the mold come to the exact centerline of the tire, then pour that part and let dry. Then remove it from the mold and pour the other half and drop the cured half on top while it is wet and the tire will be bonded together. You will need a "key" on the tire and mold to line up the 2nd. half but it should work. If you do it this way you will need a leveling table to have the mold exactly level when pouring. BE CAREFUL WITH THAT ACETONE!!!

Yeah, when the acetone comes into play the fires are out and garage aired out frequently!! Possibly a younger me may have enjoyed the risk!!! But not now :).

The way I'm planing on making the mold is to fabricate a mold box, elevate tire enough for second half mold, fill in with clay up to centerline of tire. That is also why I decided on this tread profile with center flat. Pour mold material. Possibly pour a hard mold support on top of that. Flip over, remove clay, clean up any water based clay residue, pour second half with fill/vent spouts. Probably 4 around sidewall of tire. That side will always be the inside of truck. And tire is unidirectional. So any flashing should be at flat centerline of tire that will be easy to clean up and on back of tire. At least that is the plan. I've been watching a few mold and casting videos and that looks like the best way to go. (Again , I think)

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/F5D8C94B-9008-414C-BFAD-0A496B0FDEC9_zpsejhistaq.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/F5D8C94B-9008-414C-BFAD-0A496B0FDEC9_zpsejhistaq.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/7D9845AF-0DDC-46DC-B942-400E9282095C_zps6xkpv5p2.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/7D9845AF-0DDC-46DC-B942-400E9282095C_zps6xkpv5p2.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/F9317D00-F5FD-4B04-A270-A0A3B15BC10D_zpszqa98mn3.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/F9317D00-F5FD-4B04-A270-A0A3B15BC10D_zpszqa98mn3.jpg.html)

That was my home cooking station. Couple ounces of acetone heated to around ? Boiling off point. Had to make a little stand. Bathed for about 1-1/2 min. The one pic shows a drip of acetone condensation that was on alum when I flipped it over and ran. I'll sand that down. Have to bathe it once more for other side. I was using a plexiglass lid to watch the melting up the side of tread. Don't know what I'm doing so I figure I can always do more than having melted it too much. Had the fan on low and garage n window open a bit then completely aired out. Still a bit of fumes. I should have asked some of the locals in town to do it, they would have enjoyed the fumes and slight headache following more than me ;)

[Cooper]

Sanded it on the lathe this time and cooked again. Came out fairly well. Should be good enough for me :)

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/FC222154-1DFF-4CA3-ACB1-83F5D6E3D147_zpspwfour05.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/FC222154-1DFF-4CA3-ACB1-83F5D6E3D147_zpspwfour05.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/74C27E8C-D018-4C79-B93E-DF8634FF5507_zpsiujdflew.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/74C27E8C-D018-4C79-B93E-DF8634FF5507_zpsiujdflew.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/18E995A3-14DF-42E7-939E-A03380F9BC0B_zps8zov1vou.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/18E995A3-14DF-42E7-939E-A03380F9BC0B_zps8zov1vou.jpg.html)

Going to let it dry overnight to completely set up any soft material. There are some minor imperfections and I'm not sure how they will show in a cast part. But like I said I have no idea of what I'm doing so I'll just have to wait till a final product. At least I didn't over cook it and have to start over!!!

[bigford]

and the house is still standing!!!

[Cooper]

and the house is still standing!!!

Lol!!! Yup , just keep seeing weird things and bumping into things!!! :) oh and the wife just got home from a dog Halloween party. She was giving me stuff for not blowing up house with vaporizing acetone while she used hair paint on the dog , in the house, that stuff is butane based!! I walked inside the hose earlier and just about fainted!!!!

[steamer]

Cooper, I'll ask you to go back and read the last line on your post again and then I'll ask you, if that stuff didn't affect you a little more than you though!!! LOL!!!

[Cooper]

Cooper, I'll ask you to go back and read the last line on your post again and then I'll ask you, if that stuff didn't affect you a little more than you though!!! LOL!!!

Lol!! Darn computer spell checker!! Lol!! That's what I saying!!

[modelman]

Cooper-what you have so far looks really good. On molding, any imperfection in the tire will show up in the mold and on the molded part. But it is just a "dump truck tire" so I wouldn't be too concerned. The building technique you described is similar to what I did but I found by pouring the complete tire there will be problems with air. I even used a shaker table and still could not get all the air out but it was very minor and I turned that to the inside. The way I described the half mold idea will eliminate the air problem but I am sure you will work it out. Keep working!!

[Cooper]

I have not completely decided what method I'll do yet. One thing I have going is the highest part of the tire will be the sidewall. So doing something like yours I'm hoping to minimize air bubbles. And like you said that will be the back side. I even thought of having the mold at a 45 angle but that may make two of the treads capable of trapped air. Have to do a bit more knowledge searching :). And that's my opinion on the imperfections, I thought about using a high build primer but I don't want to get any in the treads as they are not the easiest to sand and that's what the acetone flattened out. Once some real dirt gets on um I'm hoping they will blend right in. None of my stuff stays pretty for too long:)

I'm trying to get some pics of the frame that I can accurately scale off. This may change to a 785d, I can get one of the norscot die cast models. Anout the only difference I found so far is front end appearance. And those little models are pricey little buggers!!!! Have to go to the local cat dealer with the d11 and excavator, maybe they will sell me one cheeper. They don't get any trucks that size and biggest dozer they get in the lot is usually d9. Lots of adt trucks. But they have most of the toys, probably the 797 and not what I need. Everyone around has been telling me to take the toys up there anyway.

[Mikem]

HI Cooper if you are casting your tire horizontally why don't you put vents in the high part of the tire and then clip them of . I used .040 wire and my parts looked like a porcupine but it did get 99% of the bubbles out . The other thing we did was to put compressed air in our pressure pot about 60 psi . We also had the fill bigger so a little more resin would go where the bubbles were . Hope that helps . Mike

[bigford]

coop bought a vac pot. he should be able to vac out almost all the bubbles

[modelman]

Cooper-I think you will have a better chance of getting the air out if you have the tire lying down perfectly flat and level. I will show you a few pictures of what I did and maybe it will help you decide.
http://i305.photobucket.com/albums/nn216/modelman/777D%20Mining%20Truck/100_1150.jpg
I used large vents but it still had air trapped but I think getting it filled just barely to the top would help let the air out easier. But the bad side of that is if it is not full the tire will be no good.
http://i305.photobucket.com/albums/nn216/modelman/777D%20Mining%20Truck/100_1160.jpg
The nubs are easily trimmed off and sanded smooth.
http://i305.photobucket.com/albums/nn216/modelman/777D%20Mining%20Truck/100_1165.jpg
Also be sure of the hardness you need. I thought this was good but with an extreme load on the truck there was no flex in the tire. I can send you more pictures if you want.

[modelman]

coop bought a vac pot. he should be able to vac out almost all the bubbles

I don't think you can put a vacuum on a closed mold.

[Cooper]

Model man, I'm aiming for a casting just like you did yours. As far as the degassing, only the resin/urethane / whatever you are mixing gets vacuumed for about 90 seconds. Not the mold or poured mold. Once the resin pulls a vaccine (rises in the vacuume chamber and falls, like a bad loaf of bread, the resin is ready to be poured into mold. From what I've read so far just some well thought out pour holes and some hand tapping will release any bubbles on the mold. Most of the little bubbles are from mixing the resins together , that what the vacuume / degassing is supposta eliminate.
Modelman what hardness were those tires? I got stuff coming and the first one I'm starting with shore hardness of 60, it is said to be like sneaker tread. It may be a bit harder but it's a solid tire and pretty high sidewall.

[bigford]

wouldn't it draw the air out the 4 vent tubes?

[modelman]

Cooper-I used the "vyta-flex 30" urethane rubber from "smooth-on"on my tires. I thought I was good by how easily they flexed but when mounted on the rim they became very hard. I think because it was a solid tire. This is your decision but I think the 60 may be a bit too hard. I agree with what you are thinking though. I would prefer the tire be to hard than to soft. If it is to soft it might just roll right off the rim on a side hill drive.

[modelman]

wouldn't it draw the air out the 4 vent tubes?

No, Vacuum is meant to be used on an open mold or table or a flat surface. Example-if you vacuum something down on a flat table, you seal the part around the edges and vacuum the air out from under the bag and atmospheric pressure pushes the material down against the table. The same thing happens when you pull a vacuum on an open mold. BUT-if you pour wet rubber into a rubber mold the vacuum will distort the mold and just force all the wet rubber from the mold. Most people don't realize that atmospheric pressure does all the work when bagging. The vacuum pump just pulls the air from underneath the part. Hope this makes sense

[Mikem]

Modelman I was doing ho scale buses vacuuming resin sucked but compressoring worked real swell . Mike

[Cooper]

Oh ok, I did not know about pulling a vacuume on the mold when casting. I am not planing on doing that. I got the pump to pull a vacuume on the materials before casting. To de gas the mold resin and casting resin after mixing but before pouring. I always thought that was more for carbon cloth or fiberglass mold forms, rigid stuff with vacuume bagging. Not casting stuff. The process I'm doing is something other than vacuume casting. I think it's called open mold casting.

[modelman]

Cooper-I was trying to explain to "bigford" how vacuum bagging works. I know what you are doing but I have no experience with de-gassing the resin or rubber. I have quite a bit of experience with open mold vacuum bagging (boat molds) and am quite familiar with that. I think what you are doing would be closed mold casting because you are putting-2-mold halves together and pouring a tire. And I could be wrong but I don't think vacuuming could be used in any way with this system. If so it is waaay over my head!! I like the k.i.s.s. method.

[Cooper]

Ok got ya, yup we are on the same page. The mold resin I'm using is best if degassed. And too the silicone rubber for the actual casting. All the boats I've worked on have already been joined. I could use some miniature hands!!!! Tuff reinforcing the seam on a 36" cat hull!! Speaking of I did get the maddcatt out a few times this summer all twice because I broke flex shafts. Punched it too hard , it's not user friendly, lol. Did hit the triple digits both times. But no fast runs.

[modelman]

. Did hit the triple digits both times. But no fast runs.

You don't think triple digits is fast!! You may need to back off sniffing the acetone fumes. :D When I see that smooth water in the background of your pictures I wonder why you don't have a boat each time you go there. I can give you a tip on glassing those seams on a boat if you need it.

[Cooper]

You don't think triple digits is fast!! You may need to back off sniffing the acetone fumes. :D When I see that smooth water in the background of your pictures I wonder why you don't have a boat each time you go there. I can give you a tip on glassing those seams on a boat if you need it.

Nothing off topic at Great Dane ,,,,, lol!! Modelman this is a link from a couple years ago on the saw build of the madd Catt. I forget what my top speed was, I think just shy of 120. But not proven with pictures. She can run reliable 90-100 anytime decent water. I've got to get back to running her. We do play with the pursuit monos quite a bit. Set up an oval corse for summer till high water takes um :).
http://forums.offshoreelectrics.com/showthread.php?39334-MADD-CATT-41-quot-fantasim-saw-build&highlight=MADD+Catt

[Supermario]

I've shared your video when you ran 102 mph with many friends and they all just love it and were amazed. :cool:

[bigford]

Kat vs dog
http://i1335.photobucket.com/albums/w671/bigford550/Mobile%20Uploads/th_VID_20151027_150536_zps4vznsqxk.mp4 (http://i1335.photobucket.com/albums/w671/bigford550/Mobile%20Uploads/VID_20151027_150536_zps4vznsqxk.mp4)

[Cooper]

I've shared your video when you ran 102 mph with many friends and they all just love it and were amazed. :cool:

Thanks, I really have to spend some time with her in the water next year, I built her for speed and to stay together. Hull has not been compromised yet, and been airborne several dozen times (at speed) so this one is doing no justice as a shelf queen. She would look better with a split hull if she has to live on the shelf!! So come next year I'll keep trying to go faster and find her breaking point:). Usually the saw (straight-a-way racing) boats don't last past a couple 100mph+ crashes. She is heavy but heavily reinforced with carbon/Kevlar to take a few long jumps,,, and she has. !!

[Cooper]

Kat vs dog
http://i1335.photobucket.com/albums/w671/bigford550/Mobile%20Uploads/th_VID_20151027_150536_zps4vznsqxk.mp4 (http://i1335.photobucket.com/albums/w671/bigford550/Mobile%20Uploads/VID_20151027_150536_zps4vznsqxk.mp4)

Lol!! Big babies!! Mine are same way, cats want to jump on and go for a ride!!

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/366E64FE-0A4A-4B2A-A24E-A4D27B6CA781_zpswkatjnqz.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/366E64FE-0A4A-4B2A-A24E-A4D27B6CA781_zpswkatjnqz.jpg.html)

Got one side of the mold poured.

[Cooper]

Lol!! Big babies!! Mine are same way, cats want to jump on and go for a ride!!

Amazing how the home protectors will eat the leg off the ups guy but a little RC and they are tucking their tails!! Lol!!!

[bigford]

where's the tire??? you should see half a tire in there

[tc1cat]

Have been thinking about your mold making and tire making project. If memory serves me correctly- don't bet on it!!- you can put your mold in the vacuum chamber as it cures so that it won't distort if you put the completed mold in the vacuum chamber with resin in it to mold the tire. This way all of the trapped air is removed from both the mold and the resin for the tire. I am sure this is what Alumalite recommends. Never purchased a vacuum chamber as I tried to stick to open or 1 sided molds. I do remember them saying that you need to use the vacuum chamber for all phases of the process. Just using the vacumm on the mold silicon and the resin before molding is not enough to get ALL of the air out. The vacuum must be used during the curing time to remove any trapped air accumulated during the pouring process. Modelman's pouring vents also help a lot.

Hope that this might help.

[DieselKid]

I don't know why I don't visit this thread more often, so much new additions since the last time I checked in!:eek:

The dozer, excavator.....everything, just awesome! Especially the scratch-built scissorneck I'm digging that short wheel base Aeromax daycab.....looks perfect!:)

Keep up the awesome work!

-Alex

[Cooper]

I don't know why I don't visit this thread more often, so much new additions since the last time I checked in!:eek:

The dozer, excavator.....everything, just awesome! Especially the scratch-built scissorneck I'm digging that short wheel base Aeromax daycab.....looks perfect!:)

Keep up the awesome work!

-Alex
Thanks, it's a hobby that is constantly changing from making brass cylinders to programming radios, to now trying to make tires!!! It's a fun ride :)

[Cooper]

Getting ready to check on last nights pour of my first mold. Have to wait till Monday to pour second half, didn't get enough material first time. And to clear up some confusion on the type of mold making I'm doing , I am doing a two piece open pour mold. Silicone mold resin casting. (Silicone rubber) the process I am doing does not require degassing of mold material but is recommended. The process of degassing is not the same as vacuume molding. This is not vacuume molding. I am using the casting method. All the vacuume that I am using is for materials prior to being poured. When materials are mixed air may be introduced to material. If material is degassed(vacuumed) for about 90 second it allows the trapped air in mixed material to be removed. Then the material is poured into mold. The mold is NOT vacuumed during the final casting process. The material used in making the mold is not as critical as the actual casting (part) resins in the degassing nature. But having well placed vent holes are in the casting application is. So it looks like earliest results will be Wednesday.

[TRUCKMAKER]

where's the tire??? you should see half a tire in there

Coop I worked on some of this kind of molding years ago and things have changed big time but I'm with bigford, unless you cut your pattern in half in the tread centerline and its laying cut side face down why aren't we seeing half the tire sticking out of your first mold pour?

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/95B9745F-DCF0-4E42-8D49-26648707C041_zpsghkwhb0f.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/95B9745F-DCF0-4E42-8D49-26648707C041_zpsghkwhb0f.jpg.html)

[Cooper]

Coop I worked on some of this kind of molding years ago and things have changed big time but I'm with bigford, unless you cut your pattern in half in the tread centerline and its laying cut side face down why aren't we seeing half the tire sticking out of your first mold pour?

I guess I was just posting progress pics :)

This is the first half of mold poured last night. Have to let first half cure before second half gets poured. I should have taken a picture of the clay base. In the first pic the mold box has 3/4" of clay the tire is resting on. Then clay up the sides to centerline of tread pattern. Also why I choose a tread pattern to make mold simpler. The pink is the mold material poured onto half the tire.

In the second pic I removed the mold box, and removed the clay. Some more cleaning and then a release agent, then second half of mold will be poured onto that. Making a complete two part mold. Pour holes and vent holes will be added. And that is the ugly side of tire that will always be facing inward so not as much time spent on smoothing out all the little lines.

I choose to make the mold this way as it seemed more uniform. I guess I could have made the first half with the plugs on bottom and not went the clay rout. Eather way it's the same.

[Cooper]

Actually the second half will not have vent or pour holes. It will be poured as is. Once the mold is cured I will cut holes from the mold cavity side. Just using a piece of tubing to cut a couple circular holes. This way I don't have to worry about attaching anything and can precisely locate them where I want. I'll post the progress as I go :).

[bigford]

what have we told you about posting pic out of order!!!!! bad cooper you confused us

[TRUCKMAKER]

Yeah Coop we'll have to have my shop Forman have a chat with your shop Forman!:cop::lol::lol::D

http://i1116.photobucket.com/albums/k561/truckmaker57/63a3927fbbf782d10d125aa0eec5d20f_zpsy4ulotwo.jpg

[Cooper]

And then we definately wouldn't get anything done!!!! Lol!!!!! Kind of funny, last night after I poured the mold I left heat on in garage and closed up. Then before I went to bed I had to go out and check the mold,,,, found the cat sitting next to it looking odd!!! Don't know if I interrupted what was about to happen or if I just saved myself cleaning silicone off a giant hairball with teeth!!! Might even have found a cat poop mold in the morning!!

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/87080847-FFBF-4EDA-ADF2-F8259621CCD6_zpsl3qz8qhf.png (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/87080847-FFBF-4EDA-ADF2-F8259621CCD6_zpsl3qz8qhf.png.html)

Well I bit the bulled and found a 785d 1:50 scale model to base this build off. Pricey little buggers!! Found one for a little over one bill!! Just some size comparisons. I'm building the one in middle. Some big pieces of equipment on our planet!!! I have never been up close to anything bigger than a 777, but that was impressive. Might have to take a ride up to coal country, but don't know if any 797s are around here.

[TRUCKMAKER]

I seen this picture a couple of days ago, kinda puts it all in perspective, the size difference is amazing.

[Bo Wallen]

And then we definately wouldn't get anything done!!!! Lol!!!!! Kind of funny, last night after I poured the mold I left heat on in garage and closed up. Then before I went to bed I had to go out and check the mold,,,, found the cat sitting next to it looking odd!!! Don't know if I interrupted what was about to happen or if I just saved myself cleaning silicone off a giant hairball with teeth!!! Might even have found a cat poop mold in the morning!!

I think.......that giant hairball just wanted to help you make the worlds first Cooper/Cat tyre :cool:

[Cooper]

I think.......that giant hairball just wanted to help you make the worlds first Cooper/Cat tyre :cool:

Lol!!! I'm just really glad I went and checked on it. I didn't know cat was still in garage!! Just imagine going out in morning and seeing the cat all matted in hardened silicone , possibly laying in the mold box!! We would have one of those hairless cats!! Ya know,,,,, it may be fun shaving that cat,, all but his head feet and tail!!! Oh great, more work to do in the shop,,, shaving a cat.


(All yours reg!!)

[TRUCKMAKER]

We have a hobby shop/ raceway about 45 minutes from here. They have a large orange tabby that they shave to look like a lion and he does, if you like cats he's is really cool looking.

[RCP57]

Lol!!! I'm just really glad I went and checked on it. I didn't know cat was still in garage!! Just imagine going out in morning and seeing the cat all matted in hardened silicone , possibly laying in the mold box!! We would have one of those hairless cats!! Ya know,,,,, it may be fun shaving that cat,, all but his head feet and tail!!! Oh great, more work to do in the shop,,, shaving a cat.


(All yours reg!!)

Ummmm.... Too easy.lol

...silicone and a shaved kitty.... Sounds like a party!

[ihbuilder]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/87080847-FFBF-4EDA-ADF2-F8259621CCD6_zpsl3qz8qhf.png (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/87080847-FFBF-4EDA-ADF2-F8259621CCD6_zpsl3qz8qhf.png.html)

Well I bit the bulled and found a 785d 1:50 scale model to base this build off. Pricey little buggers!! Found one for a little over one bill!! Just some size comparisons. I'm building the one in middle. Some big pieces of equipment on our planet!!! I have never been up close to anything bigger than a 777, but that was impressive. Might have to take a ride up to coal country, but don't know if any 797s are around here.

I've seen a 785 here next to a D11 but nothing bigger down here .

[Supermario]

My buddy up north at a gold mine. The electric version of a 797

http://i1275.photobucket.com/albums/y447/catman4088/1a4e1e9961b473f760666b2b6ba270bd_zpstweow7ao.jpg

http://i1275.photobucket.com/albums/y447/catman4088/eab7f8bd752f86f8bc0a363a84ca260a_zps7frlza2p.jpg

http://i1275.photobucket.com/albums/y447/catman4088/6599dd39e10d4404be458f802668a105_zpskudm2jqn.jpg

The biggest loader I've been around...

http://i1275.photobucket.com/albums/y447/catman4088/59b474bf60562f797cc4627bc3eba940_zpsjvxgb1tm.jpg

[Cooper]

Wow!! And thanks for the mail pics Mario, once I can get accurate frame geometry and dimensions I think I'll be set for building. Not going for perfect scale but for function.

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/5A0AD0D8-CCD5-407A-A930-31A1DF1488DC_zpszgmv5cym.png (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/5A0AD0D8-CCD5-407A-A930-31A1DF1488DC_zpszgmv5cym.png.html)

BOOO! It's late but happy Halloween!! Says the hairball with fangs and claws!!

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/B1AF0D6E-8FA6-46F4-8B65-C482D9664518_zpsct1wsvym.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/B1AF0D6E-8FA6-46F4-8B65-C482D9664518_zpsct1wsvym.jpg.html)

Got some more mold making silicone, just got done the bottom pour. No vent holes or casting holes. I am going to cut them in after silicone has set. More simple, will just use a sharpened tube to cut them.

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/24B1E9BC-9028-4691-8F81-9385F78631AD_zps5kf54rvp.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/24B1E9BC-9028-4691-8F81-9385F78631AD_zps5kf54rvp.jpg.html)

The two parts, have to cut some pour/vent holes

[Cooper]

And just to reinforce my nickname , rw is what some call me, that morphs into r dub, and then into r dumb,,

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/228DCE6F-896A-4BCD-9E36-78B73420F7BE_zpsdc603x1i.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/228DCE6F-896A-4BCD-9E36-78B73420F7BE_zpsdc603x1i.jpg.html)

I confused the resin and thought I had plenty of time to mix, degas, take my time. When I was vacuuming I thought it appeared to be getting rather stiff and then realized I just wasted $$ by taking my time. !!! Yup another part for the recycling bin!! Well a glob of something!!!

And the correct timeframe for mixing, degrading and pouring. I placed a weight on top of mold as a precaution of deforming.
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/F2C7C0B6-4428-4DAD-8936-2DD269F36E5C_zpsmjnylmg7.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/F2C7C0B6-4428-4DAD-8936-2DD269F36E5C_zpsmjnylmg7.jpg.html)

[RCP57]

Since you're building a "Kitty" why didn't you use the pink for your tires also?

On a serious note, how long are we waiting to see if you are a hero or a zero with this process? Keep in mind you are already my hero as previously stated...

[TRUCKMAKER]

I'll leave the pink kitty jokes alone! Is it soup yet? We want to see a tire!

So what is the working time on the rubber?

[Cooper]

Well that depends on if I am willing to be a zero :). Lol!! 2-4 hours on demolding time so hopefully tonight yet. I already know I didn't add enough pigment. It is pretty concentrated and too much will weaken the resin. So I may have been on the skimpy side of black color. And I do t know about the possibility of trapped air. One thing I did find out is if air bubbles are a problem (trapped pockets) to apply a dusting of baby powder. It's just me but I learn more after I've done something. I grew up tearing things apart not putting them together. So my lack of human evolution leaves me with reading the directions after its together. Ha know when it doesn't work and ha have leftover parts wondering if they are extra or if they might actually be needed ��

Thanks reg!!! So be seeing you in August !!

[Cooper]

And the wife got some pestering with the leftover mold rubber. Once cured it pulled out of the bucket and its squishey and stretchy and ,,,, Oh yea I guess I should leave it alone also :)

And on another side I went to Taco Bell today , great tacos today ;)

[TRUCKMAKER]

Well if the tire thing doesn't work at least you know you got something else you can mold!

[bigford]

i missed something why dose your wife want to play with pink silicone shapes??????

[Cooper]

Couldn't wait, had to pull it out.

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/41D9DAF5-58EC-4CFA-9882-D9CFBCBFD570_zpsaiih7zdq.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/41D9DAF5-58EC-4CFA-9882-D9CFBCBFD570_zpsaiih7zdq.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/3E875891-B713-4B58-86D8-338C93F8B756_zps8mllpaou.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/3E875891-B713-4B58-86D8-338C93F8B756_zps8mllpaou.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/E99B74CE-37E3-4F67-AC98-25932BB611A8_zpslqqughvl.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/E99B74CE-37E3-4F67-AC98-25932BB611A8_zpslqqughvl.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/55F37A12-0E2B-4873-86AB-86E21D3A8855_zpsdvwnm3sn.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/55F37A12-0E2B-4873-86AB-86E21D3A8855_zpsdvwnm3sn.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/5E5D9683-21F1-4E7B-A146-7FDB027F2017_zpspw6n0v4m.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/5E5D9683-21F1-4E7B-A146-7FDB027F2017_zpspw6n0v4m.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/DEFA2625-86BF-4CB9-9828-C020381123E5_zpspejig39i.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/DEFA2625-86BF-4CB9-9828-C020381123E5_zpspejig39i.jpg.html)


And the pinch test, duro 60, wanted them to be hard enough not to roll and stay put.
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/79C3805C-0058-4213-9608-354C01CD623C_zpsus7m313u.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/79C3805C-0058-4213-9608-354C01CD623C_zpsus7m313u.jpg.html)

And the bad side. I have a better idea of how to eliminate the little bubbles. They are from pouring the resin into the mold. I need to pour it while slightly angled, roll a bit, the baby powder, and a freckle more experience. Second one will be better!!
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/42CA5DFC-83C5-4316-9790-A4AF06F291AC_zps639sd4fe.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/42CA5DFC-83C5-4316-9790-A4AF06F291AC_zps639sd4fe.jpg.html)

The color is off, more pigment. And it is shiney from some of the oil in resin and mold release. Also need to let it cure longer to guage the true hardness before I get more to make the rest.

[Supermario]

Your my hero too R dub. :D.

Congrats on your very first Cooper tire ! :cool::p:lol: I'd call that a complete first run success!

How much does the baby weigh?

[Cooper]

Thanks Mario!! I wish I would have gotten the color right, could have used this one!! Will make a good flatbed load for the trucks. 4 pounds per tire!!! She's gonna be a heavy off highway truck for sure. 24 pounds just in tires!!! Definately going to have to get the transmission right. Planning on using planetary gear motors hidden in the axle. Might even have to make hydraulic steering too!!

[bigford]

its a bird its a plane its super cooper!!!!
http://i1335.photobucket.com/albums/w671/bigford550/Yousiraremyhero_zpsshjt4tta.jpg (http://s1335.photobucket.com/user/bigford550/media/Yousiraremyhero_zpsshjt4tta.jpg.html)

[Cooper]

its a bird its a plane its super cooper!!!!
http://i1335.photobucket.com/albums/w671/bigford550/Yousiraremyhero_zpsshjt4tta.jpg (http://s1335.photobucket.com/user/bigford550/media/Yousiraremyhero_zpsshjt4tta.jpg.html)

Hahahahahahah !!! Got me to smile!!! I AM SPECIAL!! In my own way!!! Lol!!!!!!





Jacka$$!!!! Lol!!

[Supermario]

It don't take long and the tires aren't black anyway. More of a grey tone afterawhile. :)
Hydraulic steering might not be a bad idea for this beast......so, handmade dump cylinders, soon to be steering.....your almost there! All that's left is make the worlds smallest nitrogen charged suspension cylinders!:eek::D

Something tells me the motors are gonna run the same price as the mad cat motors? :rolleyes::eek:

[RCP57]

Wow, that's just super:bounce::bounce:! The tire looks OK too I guess.:p

Seriously, that looks fantastic for a first attempt! It's too bad the materials cost so much because I'm sure if you built a few more they would be perfect before too long. Keep up the great work!

Please note that I have refrained from commenting on certain posts....

[Cooper]

That would be perfect , I hear it gets a tit bit nippy up there!!

[Supermario]

Please note that I have refrained from commenting on certain posts....

Atta boy Reg! :lol::lol: I'd like you to stick around for awhile.

[Cooper]

Wow, that's just super:bounce::bounce:! The tire looks OK too I guess.:p

Seriously, that looks fantastic for a first attempt! It's too bad the materials cost so much because I'm sure if you built a few more they would be perfect before too long. Keep up the great work!

Please note that I have refrained from commenting on certain posts....

Yeah, I see the possibility of a reprimand. Lol!!!

And yes this isn't on the cheep side. I did look at other materials but longevity won out. And went with this type. I really didn't spent much time with the part prior to making the mold. Figured equipment tire a few blemishes,,,,, I think I'm going to start working on a two piece rim and the axle next. Figure if a design change needs to happen better not make them all. I'm trying to make the weight of the truck on the axle and not on the motor shaft. Like a post of joes when he was building the adt. Any idea where to source 1 1/2 I d bearings that are not much bigger on the o.d.? And cheep?

[RCP57]

Are you planning to run two of those planetary motors in the back ground of that one picture? I have one of them in the rear of my Tigercat(smaller motor in front) and it works pretty well. I'm running 165rpm motor with a 2.6:1 axle ratio and the speed is on the high end of usable with a nearly 8" tire. It could stand to have more power though. I would guess you will want this to be in the 30-40rpm range if you are using a direct drive so those motors would have more torque? What height are these tires again? KP used one big planetary motor in his 1/12 Kamatsu truck so two of these little guys should be close.

[RCP57]

Atta boy Reg! :lol::lol: I'd like you to stick around for awhile.

I don't want everyone to think I'm a rude boy.;)

[Cooper]

It don't take long and the tires aren't black anyway. More of a grey tone afterawhile. :)
Hydraulic steering might not be a bad idea for this beast......so, handmade dump cylinders, soon to be steering.....your almost there! All that's left is make the worlds smallest nitrogen charged suspension cylinders!:eek::D

Something tells me the motors are gonna run the same price as the mad cat motors? :rolleyes::eek:

Why not? Lol!!! And to think this was going to be a relative easy build!!!! Everyone says never underestimate yourself? I always overestimate!!! I did pick up some fairly inexpensive planetary gear head motors from servo city. 118 rpm might be a little slow. They use a 540size motor (I think) I'm basing the drive system on them. Cheep enough to possibly replace with faster. Hard part is trying to secure them and build the axle so weight of machine and payload is on axle not on 6mm motor shaft.

[Cooper]

Are you planning to run two of those planetary motors in the back ground of that one picture? I have one of them in the rear of my Tigercat(smaller motor in front) and it works pretty well. I'm running 165rpm motor with a 2.6:1 axle ratio and the speed is on the high end of usable with a nearly 8" tire. It could stand to have more power though. I would guess you will want this to be in the 30-40rpm range if you are using a direct drive so those motors would have more torque? What height are these tires again? KP used one big planetary motor in his 1/12 Kamatsu truck so two of these little guys should be close.

Give me a min, I'll go look.

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/6FB11EE9-B394-4EEA-8102-3CD984D87480_zpsdybl5563.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/6FB11EE9-B394-4EEA-8102-3CD984D87480_zpsdybl5563.jpg.html)
Yup these should work?

[bigford]

that little motor for that big rig LOL!!!

[Cooper]

Lol, picked them up for another project,
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/CD07EFCF-E02D-49AC-9488-8025EC1BC76A_zpscl2qvyvj.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/CD07EFCF-E02D-49AC-9488-8025EC1BC76A_zpscl2qvyvj.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/248F5C4E-1146-4D32-AC6D-A173EB10E54F_zpsn2nfsfpe.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/248F5C4E-1146-4D32-AC6D-A173EB10E54F_zpsn2nfsfpe.jpg.html)

These are what I'm planning on using. I'm planning on running them inside the axle. So two in the rear. And was also thinking of using some radio mixing to control them independently. Act as a locking axle or slip for tight turning. So you think 118 rpm at axle may be on the fast side?

[Cooper]

that little motor for that big rig LOL!!!

Haha got ya, check your mail!!!

[RCP57]

You want it to be able to do this right?...https://youtu.be/LtbxUR9raN0?list=PL5Nlq4nNc-_n5MoAVIYPKlAqXQU81-vMh This has the 165rpm planetary in the rear. Motor is almost stalled but tires are slipping on rims.

I looked but none of the videos show it's speed very well. This is with two 152rpm gutless motors driving the axles(2.6:1)... https://www.youtube.com/watch?v=rAHZnO534VU&index=19&list=PL5Nlq4nNc-_n5MoAVIYPKlAqXQU81-vMh

[Cooper]

It don't take long and the tires aren't black anyway. More of a grey tone afterawhile. :)
Hydraulic steering might not be a bad idea for this beast......so, handmade dump cylinders, soon to be steering.....your almost there! All that's left is make the worlds smallest nitrogen charged suspension cylinders!:eek::D

Something tells me the motors are gonna run the same price as the mad cat motors? :rolleyes::eek:

https://www.servocity.com/html/118_rpm_hd_precision_planetary.html#.VjlzPHA8KrU
$40 , Catt motors another "0" and then some:jaw:

[bigford]

LOL!!!! wow you just wrong!!

[bigford]

you got mail.....

[RCP57]

Now I feel like I am missing out on the "special" pictures...:lol:

[Cooper]

Just a fist full of joy,, go ahead mark load up reg's mailbox.

[RCP57]

I feel like my computer might need penicillin now:eek::jaw:

[bigford]

http://rs1152.pbsrc.com/albums/p497/Arek56/Chihuahua-eyes-bugged-out.jpg~c200

the look on your face after opening a email from RW

[RCP57]

:jaw: I think this best represents my eyes and the picture sent all in one.

[Old Guy]

Cooper

Great tire for first try, my first one was right on then I got cocky and 2cd one was a disaster, keep it up

Earl

[Mikem]

The dog pic was me when I impacted the ground from 8 feet up and then at the hospital when the doc said I broke 4 ribs . Cooper sorry for putting this on your thread . Mike

[9W Monighan]

Yeah, I see the possibility of a reprimand. Lol!!!

And yes this isn't on the cheep side. I did look at other materials but longevity won out. And went with this type. I really didn't spent much time with the part prior to making the mold. Figured equipment tire a few blemishes,,,,, I think I'm going to start working on a two piece rim and the axle next. Figure if a design change needs to happen better not make them all. I'm trying to make the weight of the truck on the axle and not on the motor shaft. Like a post of joes when he was building the adt. Any idea where to source 1 1/2 I d bearings that are not much bigger on the o.d.? And cheep?




For thin bearings, try looking here: http://www.ebay.com/sch/i.html?_from=R40&_sacat=0&_nkw=kaydon+bearing&_sop=10



.

[JAMMER]

Very nice job Cooper. You can fill the imperfections with some black silicone. Ed

[TRUCKMAKER]

Coop that tire is excellent! It can only get better from here! Color isn't bad especially if more pigment will start messing with the rubber.

I definitely like SuperGirls paint job!

[Cooper]

Thank you fellas!! Got home and found a big box on porch. Figured it was for wife. Found my name on it and was surprised as I only had one thing coming in mail and it wasn't going to be here till Friday. The box looked really big for the small 1:50 diecast truck I got. Figured they went nuts with packing peanuts. Was surprised to actually get a side by side eye on how big my next project is going to be.
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/005BFE8B-F9D7-4B5A-8E74-8EEE72B829ED_zps7ixunbap.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/005BFE8B-F9D7-4B5A-8E74-8EEE72B829ED_zps7ixunbap.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/63B7B670-2E3C-4651-B97F-801F16CEB42C_zpsxcplmeu7.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/63B7B670-2E3C-4651-B97F-801F16CEB42C_zpsxcplmeu7.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/489F4B9B-28B9-42E3-8B1D-E2D1C35E32B6_zpsjuz9bofg.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/489F4B9B-28B9-42E3-8B1D-E2D1C35E32B6_zpsjuz9bofg.jpg.html)

[bigford]

the kill dozer just got small!!!

[FabOne]

GREAT job on your tire! SUPER first run.

=Terry

P.S. Check your PM's

[modelman]

Cooper-your first tire looks good. You probably don't need my advice but I will offer a bit of what I learned in this process. I see a little air and this will be a small problem but I noticed one of your vent holes may not be on the highest point of the tire but I could not see all of them. That could be some cause for air. Also I think you will have a better chance of getting the air out if you keep the mold level in both directions when you are close to being full. Another thing I found was to not fill the vent holes. Just let the rubber barely get into the vent holes and the air still has a chance to escape. Also, if you have the working time, stop for a few minutes when it is about 90% full and let the air escape. Then finish filling it up. One other thing I found that saved a lot of time was to leave the mold open and pour the bottom half almost full then attach the top mold and finish filling.This will take a little practice but I'm sure you will get it right.

[RCP57]

Keeping with the topic of big pink silicone things. I have to wonder if a little vibrating motor would help to disperse the bubbles or would it make things worse? I'm not talking paint shaker here but just a little gentle vibration to help settle out the bubbles...

[bigford]

oh like a mfu shaker unit !!

[RCP57]

Yeah maybe not even that violent. Just a gentle vibration to get the juices moving;). Rub-a-Dub has been pretty quiet for a day now so my guess is he will be back tonight with 6 perfect tires.:cool:

[Mikem]

But where is the picture of the tire ? Mike

[bigford]

But where is the picture of the tire ? Mike
knowing ralph already mounted to the axles

[TRUCKMAKER]

But where is the picture of the tire ? Mike

Mike- Go back 2 pages to post #1093. :D

[Cooper]

I should have more material to make another one in a couple days. This time I got enough to make one with a hardness of 40, first one is 60 comparable to sneaker shoe. The 40 is comparable to wine cork. And I'll add a lot more pigment. Originally I figured two learning parts till I get one right. More of trying to figure out how soft I can make them. and if the first two "test" tires don't make the cut maybe another project, worlds largest 1:14 scale motorcycle!?!
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/6AFD75B5-2A74-4C5A-B3A4-74A6C58564EE_zpswpg7gp4y.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/6AFD75B5-2A74-4C5A-B3A4-74A6C58564EE_zpswpg7gp4y.jpg.html)

As far as the casting, this stuff has a pour time of 5 min. Sounds like plenty but mixing, degassing, and then pouring slowly, it starts to set up quick. It's not completely necessary to degass (vacuume) and that may give me more pouring time. I think what is happening is the material is starting to thicken while some of the bubbles are still rising. And the air has been introduced from the pouring into mold. I do t think I have enough time to pour half set mold top and box up before it thickens. But quick mixing and not degassing will keep it thin and hopefully that will allow any poured air to escape. And I did cut bigger vent holes on the two small ones. It's easy to grind the casting plugs flush so I would rather do that than have to fill big pockets. And they will always be on the non visible side anyway. So a couple days more before test number two. And then I should know what to get for the production line:). If this stuff were cheaper I would have gotten enough of both and been done by now!!!

Oh and reg, I'll go check on that aeromax now, keep forgetting to , or getting sidetracked with all this silicone implanting , I ment casting stuff :)

[Supermario]

speaking from having absolutely no experience or knowledge about making tires,
instead of pouring the material into the mold. ( which I'm thinking is the major cause of air bubbles) is there a way to pump the solution into the mold from the bottom of it, or the "good side" and then trim the fill port when done?
No pouring, no air?..... Just saying:confused:....

[speedy8305]

So lemme get this right Cooper your doing silicone implants ?lol

[speedy8305]

Well Mario if Cooper had an factory then a injection machine might be ideal but I think he is doing great job and from the first test it looked like there weren't too many air bubbles I could be wrong though
But your idea is a good one as well

[Krewmember]

speaking from having absolutely no experience or knowledge about making tires,
instead of pouring the material into the mold. ( which I'm thinking is the major cause of air bubbles) is there a way to pump the solution into the mold from the bottom of it, or the "good side" and then trim the fill port when done?
No pouring, no air?..... Just saying:confused:....

Sort of like low pressure injection molding :confused: factory made rc tires probably use some kind injection molding. so you may be onto something there. :thinking:

[bigford]

so instead of a $5000 dump truck cooper into it for $105,000.

keep plugging away r-dub and watch this
https://youtu.be/QC5xzmeYP74

[Mikem]

Truck maker ,thanks for the post number missed a couple days of due to rib issues . Cooper when I use to moulding I got rid of those tiny bubbles you have at the top by putting it in a vacuum pot it worked well . Mike

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/8C1920B7-1E2D-405B-BB7F-2D6A842C1377_zpseawyn74k.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/8C1920B7-1E2D-405B-BB7F-2D6A842C1377_zpseawyn74k.jpg.html)

Hate dismantleing such a nice model but it's needed. Making an early Xmas list for metals:)

[bigford]

this what you did for the d11?

[Cooper]

this what you did for the d11?

Yup, same thing, bit the bullet and bought one of those models, scaled off of it. Also various pics, company brochure , and shop manuals. Pics from Mario will help. (Would be nice if cat would give me access to detailed manufactuering blueprint) blahhhhahahah:lol:

[Bo Wallen]

Yup, same thing, bit the bullet and bought one of those models, scaled off of it. Also various pics, company brochure , and shop manuals. Pics from Mario will help. (Would be nice if cat would give me access to detailed manufactuering blueprint) blahhhhahahah:lol:

Hey Cooper/Cat

Have you looked at this : http://www.the-blueprints.com/vectordrawings/show/10208/caterpillar_785d_off-highway_mining_truck/

You R doing AWESOME work Carry on :cool:

[steamer]

R W you might want to take a look here too. On page 17 there's a three view drawing of your truck. Load it on a zip drive and take it to your local copy center and have it enlarged so the axle wheel base is 14.571 and you'll have a drawing you can measure strait off of.
Good luck, she's going to be big!!! 32.5 L x 16" H x 19" W

http://s7d2.scene7.com/is/content/Caterpillar/C637177

[Cooper]

Hey Cooper/Cat

Have you looked at this : http://www.the-blueprints.com/vectordrawings/show/10208/caterpillar_785d_off-highway_mining_truck/

You R doing AWESOME work Carry on :cool:

Thanks bo, and steamer, they will help!!

[Cooper]

Well I wasn't sure about power of the gearhead motors I got, so I got some new ones in mail, they are .55horsepower each. They should move it fully loaded;). But on the serious side, this thing may be pretty heavy, tires are 4 pounds each, that's 24 pounds just in the tires!! I really don't know what weight she will be but it's probably gonna come in around or over 80 pounds. I'm planing on frame and most structural stuff alum, the dump bed sheet steel. I hope my brazing skill will improve. I really don't want to have a bunch of ugly tack welds on dump box necause it will be pretty visible when raised.
Steve, thanks for the kaydon bearings, they are the slim type I was looking for, but,,,,, those little suckers are $100 or more for one!! Changed my ideas around on the axles to suit more practice bearings. I have almost 6" between rear tires and duel wheels spread almost 5" so plenty of room to hide motors/support bearings and anything else in rear axle. I also thought about 1:5 and 1:8 scale gas RC trucks rear differentials but I'm thinking they are even small for this!! And the gearhead motors I am getting have a 1/2" shaft, 1 1/2" long. Keyed and end hole tapped on shaft. That will make a really solid set up for removing load from motor shaft to the truck axle.

[Cooper]

This thing is going to be almost 3' long, 18" wide and with dump bed raised almost 32" tall. This may be on the limits of what I can comfortably carry around. !!!! One thing about this is it is a fast mover compared to the dozer, as long as it's is running I'll be using it to move me possibly!!!! I'm just guessing here but I imagine it should be able to haul about a five gallon bucket of material. Should be built to support 80 pound load or more.

[Exclusive RC]

glad to see it all coming together brother, cant wait to see this bad boy i action! :bounce:

[Supermario]

And don't forget the battery weight and size. Probably going to need a good sized one for decent run time. Or maybe wire up a whole bunch of those lipos you got should work.:eek:

I'd hate to see you strain your back carrying the beast. Better build a tow cart or something for behind the ATV? :)

[Bo Wallen]

Hey Cooper !

This might avoid future BackPain Just train Mr Nutter to drive The RockBeast and the transportation is solved. Roll on roll off :https://www.youtube.com/watch?v=OPdCDj_RiKI

[Cooper]

Good idea Bo, but mr nutters has moved onto another worksite, he now works for the forestry department:).

Well I know I got the pigment right this time. And I mixed for 1 min, immediately poured and had the mold slightly unlevel, tapped mold, basically did everything I could to eliminate the air. Time will tell, about two hours and I get to see if hero or zero!!!
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/59071D21-1178-4ED7-88BE-A471FCB9EDC2_zpsk9zgb4xs.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/59071D21-1178-4ED7-88BE-A471FCB9EDC2_zpsk9zgb4xs.jpg.html)

[Bo Wallen]

Drumroll, Please !

[Cooper]

Here ya go mark,Bo,, and some scale along the aeromax

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/B0F286A4-74C2-4FD5-8114-4ED393A93BB5_zpseftpvf0e.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/B0F286A4-74C2-4FD5-8114-4ED393A93BB5_zpseftpvf0e.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/76DB96BC-E7CD-4773-A5C9-57B831581B80_zpsoh1hrso8.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/76DB96BC-E7CD-4773-A5C9-57B831581B80_zpsoh1hrso8.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/A74F91F6-0B2C-4121-8373-476E5CBA4776_zpsyyzrhyc5.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/A74F91F6-0B2C-4121-8373-476E5CBA4776_zpsyyzrhyc5.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/E1145B13-F5D4-4E96-9BDA-0A191A9CAD6F_zpsv4irssg4.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/E1145B13-F5D4-4E96-9BDA-0A191A9CAD6F_zpsv4irssg4.jpg.html)

[Bo Wallen]

SCORE !!! You Sillycone Guru :bounce:

[bigford]

the tire is as tall as the aeromaxxxxxx
epic build going on here!!



back to my little kat

[Mikem]

Impressive cooper . I think you'll be able to put all my trains in the box ! Mike

[RCP57]

May Santa bring you a box full of hero cookies! That is awesome my friend!

[9W Monighan]

Nice! They barely look like a permit load.

[TRUCKMAKER]

They really turned out good. What durometer did you end up going with?

[Cooper]

I made the first one a60, pretty firm, the second try is A40. I think the 40 will be better. Can squish the treads easy but I don't think the tire will roll or flex too much once on rim.

[modelman]

Tire looks good cooper!!

[Cooper]

Tire looks good cooper!!

Thank you!! I found the sweet spot on this mold, I now have 4 nickel sized vent holes. And have the mold slightly unlevel. Before I mix the resin I degass the A side with dye. Introduced a few air bubbles and that side is the rather thick side. That pulls a lot of small bubbles suspended in it. Then mix slowly. The B side is pretty thin so when combined it is fairly thin. Slowly pouring and tapping and pushing on mold released most stuck air bubbles. I think the ruff side of the mold creates just enough surface tension for air to stay put. Guess it goes back to really spending time on the mold part, really making smooth. I just figured it's the backside and wouldn't show so I didn't spend much effort on that side. But the finished tires will be fine for me. Throw some mud on and it will look fine :). I guess that's why I like my stuff scratched and dented, it hides a lot of the imperfections !! Lol!! Just waiting for some alum to show up and then start the smoke pouring from my ears! Tires are just a couple ounces under 4 pounds. And I think I got the pigment correct. 10 drops of black pigment each tire.

[Mikem]

Huge run flats ? Mike

[Lil Giants]

Tires look fantastic buddy... took me awhile to get caught up entirely on your thread, I was absent the last couple weeks of October.

Anyways, considering your motor options... I checked the motor output of the 4206, pulled the wheel off to get an accurate shaft rpm of 87 & my gizmo has a wheel adapter too, measuring surface wheel rpm 347. The 4206 has a 4 7/8" tire & the model moves along nearly at walking pace (I have a 36" inseam, I take big steps).

http://img.photobucket.com/albums/v150/protrker/Jan%2015/006_zpsiqiczsj4.jpg

[Cooper]

thanks joe, I still haven't decided what gearhead motors I'm going with..,, I'm waiting on some alum to show up and then ill figure out what motors will fit inside the axle housing. I may even take brian from exclusive rc advise and make printed parts once the motors are secured.

[Lil Giants]

I noticed a few pages back you said got some .55hp motors, they have gearheads on them too?

I did the measuring of the 4206 to try to find out what might be a good speed for your trk with 8" tires & hopefully still have plenty of power to move 160lbs with just two motors... the math works out to something between 50-55rpm.

Ofcourse with your tools & talent you could also add an outboard planetary hub for more reduction from a faster smaller gearhead motor, pulling the guts out of a cordless drill.

[Cooper]

Here are the motors I got , well in mail. They may have to me taken apart and incorporated into the axle housing for a more slim mount. Being square, and the outside of gearhead may be just a little bit big. Don't know exactly till I get to it.

http://www.robotmarketplace.com/products/0-PDX256.html

90 rpm at shaft, and the stated hp is .55. Hard to believe half horse at shaft. But 256 reduction, I might not want to get my fingers swisted up in it. !! And having a half inch shaft that is already tapped at end, keyed,, that makes a lot more options I have for adding a weight bearing shaft. Your posts a while back on the adt, with fumotec axles is what gave me the idea. So reciprocating the posts, thanks.

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/B06A9467-B969-4F26-ACF7-11B1490443AA_zpsoedhqo8h.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/B06A9467-B969-4F26-ACF7-11B1490443AA_zpsoedhqo8h.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/79E3B1CF-BF84-4813-969B-3CCB2309A2F3_zpseegio7yg.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/79E3B1CF-BF84-4813-969B-3CCB2309A2F3_zpseegio7yg.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/3DD2672F-E344-4310-B314-A60193D30E4B_zps3uctjlex.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/3DD2672F-E344-4310-B314-A60193D30E4B_zps3uctjlex.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/7CD09F10-7F9A-4184-8FAD-414CA33CC47E_zpsd1nspega.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/7CD09F10-7F9A-4184-8FAD-414CA33CC47E_zpsd1nspega.jpg.html)
A start to the drive system.

[bigford]

those look huge or you have small hands
like mr.nutters

[Cooper]

Big hands and feet! Lol!!! No mr nutters is busy wrenching elsewhere
http://i1357.photobucket.com/albums/q750/cooperford/30FCC348-F9E9-4323-BBB0-3F3DC365D14C_zps7jhvw5mi.jpg (http://s1357.photobucket.com/user/cooperford/media/30FCC348-F9E9-4323-BBB0-3F3DC365D14C_zps7jhvw5mi.jpg.html)

[Supermario]

Let's have a competition..... Guess the weight of rear axle and tires mounted when completed:D.
I say.... 27lbs. ish. :eek::jaw:

[Bo Wallen]

Yea.
I say 27.7 lbs. ish. :eek:

[bigford]

24.5lbs with welding 25.5 with

[speedy8305]

im going for 26.9

[Mikem]

How do you get so close to a squirrel to catch them as pets . I've touched one and it took of like a rocket ! Mike

[Cooper]

How do you get so close to a squirrel to catch them as pets . I've touched one and it took of like a rocket ! Mike

Haha!! I wish I had your luck!!! Naaaa,, we have "acquired" a few odd pets from other people thinking I like them. Save one and the whole town thinks I'm open to saving all!! I was given mr nutters from a little girl and mom, found on ground. I couldn't say no, so we nursed him back and then released him In plenty of time for the upcoming small game season. ;). We pre stuffed him!!! Bulked him up for a good mount!! Hahaha, (let him go in a campground)
YOU REALLY DONT WANT ONE FOR A PET!! The bite through hard nuts- fingers are very soft!!

So the tires/axle???? I'm slightly at an advantage here but I'll play,,, I'm saying 28.8

[Cooper]

Let's have a competition..... Guess the weight of rear axle and tires mounted when completed:D.
I say.... 27lbs. ish. :eek::jaw:

Daahmm Mario!! I put stuff on scale and tried to figure it out!!! I guess the camera doesn't add a few pounds after all!!

[Cooper]

Got some idea of what rim I'm doing. The size of these parts has made me think of using separate pieces combining into one. That requires me to learn how to weld alum. No spool gun . No tig, just the long line gun on the mig. :). But I did pick up a tank of argon. Luckily none of the welds will be visible and I'm going to be turning/milling them down. So what could go wrong!!! Lol!!! Thinking I really only need to to about 10" of alum weld all together. I still can't justify a tig welder,,,,,yet!!! Might change when I start pulling birdsnests out of the line feed!!!
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/A74975DF-17FC-4423-8A06-921DE9BF4436_zpsppx0xtvr.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/A74975DF-17FC-4423-8A06-921DE9BF4436_zpsppx0xtvr.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/4DF83B8C-D0D4-423E-A9B7-0F57C1B4950A_zpsqeupws5g.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/4DF83B8C-D0D4-423E-A9B7-0F57C1B4950A_zpsqeupws5g.jpg.html)

[jasonthekid]

Those sure are some pretty tires! Can't wait to see them dirty! Like the rest of your machines I'm sure this one will be top notch

[Cooper]

Thanks Jason, I'm pretty eager to get them rolling with some battery power!!! Got the four back wheels partially made.

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/EADED744-5A16-4E62-B916-FD94135F60CF_zpsdp3rdzfw.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/EADED744-5A16-4E62-B916-FD94135F60CF_zpsdp3rdzfw.jpg.html)

[RCP57]

Pretty! What parts are you welding?

[Cooper]

I've been trying to purchase correct dimensional stock alum so I don't have to cut much off. Instead of turning a 4" piece I got 4"X11/2" wall tube. And then turning thin sections for the hub. Welding that to the rim.
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/10F847A0-1938-4B46-9550-ACB01B4637F4_zpsfxcwmu0s.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/10F847A0-1938-4B46-9550-ACB01B4637F4_zpsfxcwmu0s.jpg.html)

I did do a few experimental welds to check penetration and learn how to. It's thick for my Hobart handler 140. I did try to hammer parts apart and held well. And the turning on the lathe didn't dislodge it so I think I'm safe.
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/ED35102E-831F-454B-9924-F991446513A4_zpsqbl3os7c.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/ED35102E-831F-454B-9924-F991446513A4_zpsqbl3os7c.jpg.html)

And my "hands on" design of how clearances will play,,,
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/2952BBBE-F6CE-4EB1-885E-EAC268C1B819_zpswrrgemtf.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/2952BBBE-F6CE-4EB1-885E-EAC268C1B819_zpswrrgemtf.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/5D6D23BC-EA7C-4391-A4D5-7E096781A11B_zps98rjowst.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/5D6D23BC-EA7C-4391-A4D5-7E096781A11B_zps98rjowst.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/77A992AA-689C-4654-B8D6-4839ABE13686_zpsfiydrsk0.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/77A992AA-689C-4654-B8D6-4839ABE13686_zpsfiydrsk0.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/555F2154-1561-4F72-8651-694E2F110D96_zpstwcnp8tx.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/555F2154-1561-4F72-8651-694E2F110D96_zpstwcnp8tx.jpg.html)

Again no paper design just what's left of my brain and in hand parts!!
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/FB379D46-B31C-42B7-A6F0-60D6A5916861_zpsxogl902x.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/FB379D46-B31C-42B7-A6F0-60D6A5916861_zpsxogl902x.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/969BDE86-9A07-4386-A8B6-968850C69B8E_zpsz13iebtu.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/969BDE86-9A07-4386-A8B6-968850C69B8E_zpsz13iebtu.jpg.html)

I'll be cutting the colored areas once I figure out how to set it up:)

[Cooper]

And yes design flaw in this part for number of holes :(. Missread on the dro

[Lil Giants]

So each tire has a two piece rim that bolted together to squeeze the bead for a positive lock?

[Cooper]

So each tire has a two piece rim that bolted together to squeeze the bead for a positive lock?

Yes , the two pieces of rim will be bolted to the axle hub. Basically sandwiching the axle hub. And if for some reason if I do have any tire slippage, I have enough material that I could remove more. I also have the rim offset a bit. I will be really surprised if I do have slippage on the rim as they are pretty snugg

[DADSGARAGE]

Hey Cooper.....looking forward to seeing this build !!! Be nice to see another big haul truck on here , considering our trucks are different in scale yours being a bigger truck 1:1 scale they will almost be the same size as models!!
You will be pleased with the power of the banebot motor/gear box , very strong!!! The power they put out is almost a bit scary...lol...just remember there is only one ball bearing supporting the 1/2" output shaft, try not to put to much axial load on it, they recommend limiting the torque to only 35 ft lbs but with the big tires and no other reduction you may need it all.(You still might need more reduction to bring the speed down and the torque up, at 70-90 RPM that thing will haul a$$ )

What size are the tires? What motor did you get on the gear box ??

Really like the tires you made!!! Looking great!!( Hey, buddy, pal ,I could use a set...LOL)

Keep up the nice work!!!

[Cooper]

Hey dads, thanks!! 1) nice to see the one video of you loading, one 5gallon bucket, and another scoop!!! Really puts perspective on how much material is in the dump body!! 2) water jet!?!!! You are so lucky!!! I need to go over to next town, a guy that has a food automation processing line company specializes in water cutting,, I really should go see him as he is a big fan of scale planes. Right next to his facility he has a manicured 100+yard runway. Figure similar RC interests I might get some cheep cutting done. 3) I have the two drive motors of 256:1 gear reduction. Don't know what motor is on the end, but noisy little buggers at 12v!!! Might not need any sound system!! I'm thinking that having two for drive will be enough torque and power. And yes I'm trying to take all weight off motor shafts and put on axles. With not wanting to spent $100-200 on a single slim profile bearing (needing 4) I am trying to incorporate 2" bearings for wheel hub carrier. I'm planing on having the two motors in axle, hopefully use some radio programming for a differential effect when wheel turned to left/right max. And some good info on your build, I would never have thought about proper geometry on Ackerman effect if you would have not posted about it!! Tires? I really wanted to use the same ones you got and not have to go through the whole process of making them. If I remember correct they were just a little too off on dimensions for my project. Spent a lot of time trying to find tires, just couldn't find close enough size. Might be able to work something up for you in future!! Still need to see how they preform in actual use.

[DADSGARAGE]

Hey dads, thanks!! 1) nice to see the one video of you loading, one 5gallon bucket, and another scoop!!! Really puts perspective on how much material is in the dump body!! 2) water jet!?!!! You are so lucky!!! I need to go over to next town, a guy that has a food automation processing line company specializes in water cutting,, I really should go see him as he is a big fan of scale planes. Right next to his facility he has a manicured 100+yard runway. Figure similar RC interests I might get some cheep cutting done. 3) I have the two drive motors of 256:1 gear reduction. Don't know what motor is on the end, but noisy little buggers at 12v!!! Might not need any sound system!! I'm thinking that having two for drive will be enough torque and power. And yes I'm trying to take all weight off motor shafts and put on axles. With not wanting to spent $100-200 on a single slim profile bearing (needing 4) I am trying to incorporate 2" bearings for wheel hub carrier. I'm planing on having the two motors in axle, hopefully use some radio programming for a differential effect when wheel turned to left/right max. And some good info on your build, I would never have thought about proper geometry on Ackerman effect if you would have not posted about it!! Tires? I really wanted to use the same ones you got and not have to go through the whole process of making them. If I remember correct they were just a little too off on dimensions for my project. Spent a lot of time trying to find tires, just couldn't find close enough size. Might be able to work something up for you in future!! Still need to see how they preform in actual use.

I hear ya about how noisy the motor/gear box is , I thinks it is because of all the gear reduction in the box 256:1 might have something to do with it...lol...one other thing to be carefull with is the grease you put in the gear box, when I bought mine it was not greased, I think they might be sending them out with grease in them now, people where putting the wrong grease in and cooking the first stage of gears, even with the proper grease the gear box does get hot after running for a while but your way of mounting them in the ALM. HSS should act like a big heat sink which will be a big plus in keeping the gear boxes cooler.

Finding the right size tires of the shelf for this size of truck is just not possible the tires I used are near the proper size but are just a bit small and too narrow but much like you I try build function first and "scale looks" sometimes takes a back seat to the design, always have to compromise a bit between function of available parts and the overall scale looks, so you will be happier with the end results and look of the truck with all the work you have put into making the tires, the pay off will be worth all the effort, and besides the rest of use are all learning with you. (our cost of learning from you and others is just a lot less...LOL)

So have you figured out how you are going to steer it?? Hydraulics would be better then what I built.... would make a much cleaner build...and you seem to be good with hydraulics. I thought of using one or two linear actuators but nothing out there is strong enough, my experience with the L16 that have the 150:1 reduction has not been good at all, the tiny gears in the drive just dont last long but the 63:1 L16 have worked very well and for a long time but I dont think they would be strong enough to steer a big truck when it is loaded. I'm sure you will figure out a new better way to steer this monster!!

KP

[Cooper]

The gearboxes were greased, that was the first things I did. Took them apart as they are said to be shipped without. If I remember correct a good high speed bearing grease, lithium I think. Don't anyone hold me to that, read what they recommend first!! When I was playing with them is when I noticed them heat up a little bit. That got me thinking about the motor and gearbox in the axle. I have several small esc fans, it was just a thought but I did consider incorporating some bit of fan driven cooling for these. They are the main components to the whole drivetrain, well they are the drivetrain!! Lol!! I was thinking of making a box that would be the primary drive (something like that on the 1:1 machines) the big thing attached to front of rear axle, would be easy to put fan in there.

And I've gots lots of learning curves!! The one rim with all the holes in, too many for the correct pattern I wanted--- well they will become front rims:).

And yes, the more I think about it I am leaning towards making two cylinders for steering. With the multi stage double acting lift cylinders I'm going to shoot for I will need pump and valve body so might as well use hydro for steering too. This rear axle is the only thing I wasn't sure about (if I could fit them and use a bearing support) but I think my plan is going to work. Don't know how soon I'll have some pics, some more pieces of stock in mail and work week looks busy. Guess it's gonna be time to pick fight with wife and get sent to garage!!!

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/2EBB2610-2407-4676-86D3-F6480D87E263_zpssvl2nmjj.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/2EBB2610-2407-4676-86D3-F6480D87E263_zpssvl2nmjj.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/24B44D87-048E-4248-A15E-090F605BBC3F_zpsudlhywbn.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/24B44D87-048E-4248-A15E-090F605BBC3F_zpsudlhywbn.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/BC3CF82D-F950-45DE-978B-D6EB544F2663_zpsvhvwvj35.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/BC3CF82D-F950-45DE-978B-D6EB544F2663_zpsvhvwvj35.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/32CB1E7D-F322-41D1-BC0E-CD6762DCB337_zps8bxjsl5u.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/32CB1E7D-F322-41D1-BC0E-CD6762DCB337_zps8bxjsl5u.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/B9C67523-D4B8-4583-98CF-780F1C24086E_zpsae89vivb.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/B9C67523-D4B8-4583-98CF-780F1C24086E_zpsae89vivb.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/397C0467-4B41-4C50-B735-5EEE15DD97AD_zpsncuzlad8.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/397C0467-4B41-4C50-B735-5EEE15DD97AD_zpsncuzlad8.jpg.html)

Well I think this "plan" is going to work. I will have 1/8" clearance between axle and wheel hub body. I wanted a little more but it will work. Probably close to scale anyways. :). I still have to drill out correct size on hub assembly and shorten shaft part. That part that started square and ended up round for the motors to slide in was about 2 1/2 hours. Set up and slow on the turning as I didn't want it to fly out of lathe. I'm going to drill new bolt holes in end carrier housing of gear head. Center has more meat in it. And the way I figure that part should be the weakest link but still a lot of aluminum for strength. Probably way more than needed but hey I got to get the weight up for that bet!!! Oh and all your guesses are locked in but I still keep the ability to change mine,,,, haha,

[Bo Wallen]

Go Cooper go ! Can't wait to get run over by this beast :cool: Love it Sir.
"Oh and all your guesses are locked in but I still keep the ability to change mine,,,, haha," That's OK too. :D

[DADSGARAGE]

Looking good....really want to see this all together because I'm not completely sure how this all works yet...lol...have to wait for the next set of pics ;):D

[bigford]

be happy we got rw to post pic in correct order now!!

[speedy8305]

Hey Cooper I think we are all just guessing the weight but we all really want to see this thing come to life and dont care if it weights 1 or 100 lbs lol **** it looks good either way keep up the good work.

[Cooper]

Ok so after doing the math, ( redneck math-spend a week making parts, assemble to find out it needs changed) I realize the tolerances are just too close to do exactly what I wanted to with having two gear head motors in axle. They are a bit long but that wasn't the big thing for me.
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/05B00A77-558A-4A6F-98C4-D2AF2A26E3CE_zpsmmcs8vjw.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/05B00A77-558A-4A6F-98C4-D2AF2A26E3CE_zpsmmcs8vjw.jpg.html)
This is how much room will be between wheel hub and axle. It is enough but if some debris gets in there it would jam and be a major effort in removing. Thought about seal but then the bearing would be better. But that is a specific thin section bearing and $100-200 bucks. Just not happening unless it was the perfect piece. But then the issue of weight being placed completely on outside rim where drive axle bolts to wheel hub. Another issue with this plan.
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/6E82830D-4D18-4718-9E43-ED77960E029A_zpsynovhwn4.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/6E82830D-4D18-4718-9E43-ED77960E029A_zpsynovhwn4.jpg.html)
This is what the components would assemble. Not showing the two piece rims that bolt to the dyed wheel hub and I had a thin walled tube to go over motor and reinforcing motor gearbox to axle. I'm pointing at load area. And all that bolted at outside wheel hub.

But only time lossed and the square section (the part that took the most set up and machining time!! Lol!! So maybe some others might get some inspiration from this failed attempt!! But the back up parts were purchased before these were!! Lol, I guess I kind of knew this might not work out:)

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/8CB13F95-5CA1-4286-BC9A-37BFF5DA155D_zpszttxadyh.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/8CB13F95-5CA1-4286-BC9A-37BFF5DA155D_zpszttxadyh.jpg.html)

Secondary parts becoming primary parts!! Oh, and another issue with the two drive motors, I wanted to have some sort of differential and was going to be burning the midnight oil with respect to radio programming, was going to mix stearing into motors. That isn't easy for me, the electronically challenged I am.
Now I'm going to be down to one motor. From dads garage build of his bigger scale, one motor is proven to power it. Thanks for that, I've looked through your build and some good stuff. Jealous of sever things! Mostly your access to a water jet!!!!! The axle will now have a traditional differential. It was ebayed from a 1/5 scale gas yard ripper (rc 1/5 scale truck ) reg has tried to get me to build the housing but bolt holes, bearings, and it's is already lined up perfectly.! Only issue now is motor and gearbox is still long! Even for this monster. Have to shorten motor shaft and hide it in the gear reduction housing (?) or whatever it is in front of the rear axle on the 1:1 truck.

[DADSGARAGE]

Is there any chance of getting some needle bearing to work instead of the ball bearings?? If there is something that size you could almost run it on a sleeve that fits over the dia you cut on the square tubing...something with about .100" thick wall then the needle bearings running on it the needle bearings would be press fit in the ID of the rim, hope that make sense....this all depends if there is such a needle bearing in the needed size range...just a though....

[9W Monighan]

HMMM Back to the single motor like I said originally.
I looked for some other thin bearings and if you search "THIN SECTION BEARING" I found some cheaper bearings by other manufacturers rather than the original name I told you about.

[RCP57]

That diff looks good! Very beefy.lol Do you have a link for where you got that?OH no, what am I asking for:confused:. I promised myself I wouldn't.:cop:lol

Anyway, I'm sorry to hear it isn't going as planned just yet. I know you will get it dialed in shortly!

[Cooper]

That diff looks good! Very beefy.lol Do you have a link for where you got that?OH no, what am I asking for:confused:. I promised myself I wouldn't.:cop:lol

Anyway, I'm sorry to hear it isn't going as planned just yet. I know you will get it dialed in shortly!

Redcat racing,,, something from one of their trucks. I ebayed 1/5 differential. Bunch stock parts, people pulling stock stuff and replacing then ebaying off.

I did look around for needle bearings. Cheaper too!! I did think about a sleeve for correct sizing.

Yup Steve, you might be correct on a traditional drivetrain :).

Hey reg, where is it that you showed building a axle housing? Lot of pages to sort through, and builds,, I might have to go back inside house and aww over some of your past builds again. I like my idea of using the plastic housing I got but, plastic in this things drive? I might not be able to live with that ;) lol!!! Weight isn't carried on that part but it ties in a lot of stuff that does!! Guess I should read over dadsgarage post about shortcuts!!! Don't want to but I guess I better get the calipers and calculator out!! Lol!!!🙀🙏🔩🔫. Don't know if those emojis show up but my wife got some app that changed my phone keyboard!! ( our phones are linked and whatever weird apps she gets I do too!! ,,, time to start another argument and then get punished to garage for the holidays :)!!!

[RCP57]

Haha. I'm on a strict diet of non RC saving at the moment so I'm trying not to be misled by you building something fun...I can't help myself though, it's a disease... Maybe my current idea will also sway your attention and then you will likely be banished to garage for quite some time... We all get feeding off one another and this just gets scary....

I have built diffs a few different ways. The Tigercat and Euclid involved welding together machined parts for the housings and the 850 KW the main housings were machined from a solid chunk. Euc and KW have removable "pumpkins". The skidder has welded centers and the axle tubes come off. This type would probably work and look more realistic for the type of build you are doing. Not only that you won't have days worth of machining to redo if drilling the axle tubes doesn't go well on the first try.:eek:

[RCP57]

Not very informative or a great job even for that matter but it may give you an idea. I didn't have a mill when I started this project so I would have done things a little different that's for sure but it does work OK.

http://rctruckandconstruction.com/showthread.php?t=3945&highlight=Tigercat

[asola76]

is very nice work
the rubber you have use to made the final tires is a Vytaflex® 30?

[Cooper]

is very nice work
the rubber you have use to made the final tires is a Vytaflex® 30?

I'm not too knowledgable on this stuff but this is what I used

https://www.alumilite.com/PDFs/New%20TDS/Flex-Series.pdf

Shore hardness of A40 , guess the hardness scale is the "A" and number is 40 so A40. Said to be similar to wine cork.

[Lil Giants]

Your concern of differential slip with a two motor axle? As long as you're not running at full power, then there's some give, like a limited slip posi, between the two motors... that's what I've found with either a 4 motor front loader or a 6 motor ADT, half throttle & machine turns like open diffs.

[bigford]

Big hands and feet! Lol!!! No mr nutters is busy wrenching elsewhere
http://i1357.photobucket.com/albums/q750/cooperford/30FCC348-F9E9-4323-BBB0-3F3DC365D14C_zps7jhvw5mi.jpg (http://s1357.photobucket.com/user/cooperford/media/30FCC348-F9E9-4323-BBB0-3F3DC365D14C_zps7jhvw5mi.jpg.html)

This just in Mr. Nutters has fallen on hard times and will do anything for food
http://i1335.photobucket.com/albums/w671/bigford550/Mobile%20Uploads/images-5_zps1hpdgc2f.jpeg (http://s1335.photobucket.com/user/bigford550/media/Mobile%20Uploads/images-5_zps1hpdgc2f.jpeg.html)
:lol:

[sparkycuda]

Would like to add to the 2-motors-1-axle discussion, but I cannot find the reference. It was posted by one of our European friends (I think on this forum) explaining that if the two motors are on opposite ends of the same axle, they should be wired in series, and when under load, the motors will create an "electrical differential" by splitting the power proportionally, based on individual motor load and RPM. If using multiple axles with 2 motors each, series wiring on each axle and parallel wiring from axle to axle.

Perhaps someone else read this or the author of the post may see this, so we can find the original discussion.

Ken

[Cooper]

Thanks ken, always appreciate input. How I had originally thought of powering them was independently, two motors, two esc's. I can understand the wireing concept of parallel and that would make sense. I would think that wireing them in series would put more strain on first (in the series) motor. But do understand the concept of "electrical differential". Hummm, I do have six tires of correct size for a future articulated dump truck,,,,,, that would be perfect to implement on.
If I would have made the inner diameter of this trucks tires about 1/2" less I would have had more room for axle/bearings/wheel shafts. But still the compounded length of opposing motors still put it on the limits. If those darn slim bearings weren't so expensive I may have continued on that path. Couple other factors, dadsgarage haul truck has proven to be powered with one motor and that opens up a lot of the design options for axle (again to understand that I'm by far any design engineer) and my limited brain power:). Lol, all those late nights when younger!!! Alcohol kills brain cells?!? Right? Me, I figured alcohol killed off all the weak ones for me so I was good to go!! As I got older that ideal changed!! Lol!! Now if I had a decent tig welder (Christmas present?) or if a awesome builder happen to get a box of aluminum parts with instructions where to weld happen to get a package delivered to his big island home,,,,,,,and quit doing circles with a drift truck,,,,,, I may be set!!!! Lol. If you do happen to find that discussion ken, post a link. I'm sure a few more of us would benifit from that.

Haven't had much time lately and the RC funding is dwindling, have to make things a little smarter, ( not have a handful of new spare parts) as my wife and I are going to be moving. Moving about 100 yards,, trying to purchase my fathers house (old farm property) and the bank just doesn't understand when I tell them I outright own a 349 excavator, d11 dozer, several rigs, and about to acquire a large haul truck. Kind of funny to say to the loan officer as reply to "what assets do you have" lol!!! Yeah that went over like a lead balloon!!!

[RCP57]

Sounds like this guy on the island might live close to me. I've heard of him before and I'm sure he would try to help you. If you get into contact with him could you pass along my email to him. I also need a good builder for some projects...

I'm glad to hear things are progressing next door. Your gonna need that property if my new toy flairs up an old fire in you:cool:.

[Cooper]

Sounds like this guy on the island might live close to me. I've heard of him before and I'm sure he would try to help you. If you get into contact with him could you pass along my email to him. I also need a good builder for some projects...

I'm glad to hear things are progressing next door. Your gonna need that property if my new toy flairs up an old fire in you:cool:.

I can only guess,,,,, does it have two wheels?? Lol,,, gotta make a good first impression on the neighbors,, make a giant RC construction pit in the front yard and a nice sx track in the backyard!! Ohhh, the neighbors would not be happy to be reliving the yesteryears!!!! 40 min non stop, two to three times a day!! But that was two stroke, now the 4strokes, they are a tad bit quieter. :lol::lol::lol:

That is if that's the new toy. :D

[RCP57]

I can only guess,,,,, does it have two wheels?? Lol,,, gotta make a good first impression on the neighbors,, make a giant RC construction pit in the front yard and a nice sx track in the backyard!! Ohhh, the neighbors would not be happy to be reliving the yesteryears!!!! 40 min non stop, two to three times a day!! But that was two stroke, now the 4strokes, they are a tad bit quieter. :lol::lol::lol:

That is if that's the new toy. :D

Haha, 4 stroke MX quieter. Good one.... I'm no longer an environmentalcase so my 4 stroke is going away and will be replaced by a 2 smoker! Dear Santa, I have been so good this year:rolleyes:

[TRUCKMAKER]

So does that mean you bought that Hayes that you and the wife were driving around?

What ?? you didn't say how many wheels it had! :cop::lol::lol::D

[Cooper]

Reg is getting even bigger on the scale toys!!! Lol!!!


Got a little more done on the axle. A lot of turning time on axle parts. I found a way to bolt them together rather than needing to weld.
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/581B9378-9349-4162-9808-C643BAFA8BDC_zpsexlelrza.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/581B9378-9349-4162-9808-C643BAFA8BDC_zpsexlelrza.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/05B24528-2E7D-4BD9-8504-DB2434F34864_zpskqzeyed3.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/05B24528-2E7D-4BD9-8504-DB2434F34864_zpskqzeyed3.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/40E8A631-8D3A-4C1A-B4F7-A2D73A46E72F_zpshdcnnqnp.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/40E8A631-8D3A-4C1A-B4F7-A2D73A46E72F_zpshdcnnqnp.jpg.html)

Needed to make the parts beefy,, I think I'm accomplishing that:). The inner parts of axles still need a radius turned. Saving that till I get to frame parts to find exacts.

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/156032C8-007C-4B53-A2D0-61065963D37D_zpsb2uqmstg.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/156032C8-007C-4B53-A2D0-61065963D37D_zpsb2uqmstg.jpg.html)
And all the tires done:)

[sparkycuda]

So tires ended up being about 2-1/2" X 9"? That's a bunch of rubber! Really nice job with the casting and using 3D printing for the pattern. Amazing how all the new technology is making more builds possible with really great detail.

Ken

[RCP57]

Haha, no Hayes truck for us although my wife wants one. I think the only way you could get that one from the owner is by buying it from his estate.lol It has a good home now and will be well taken care of until he's gone. Hopefully after that who ever ends up with it will respect the old girl and not turn it into scrap. He did show where the keys are though...:cool:

Rub a Dub! Great job on the tires! I am so impressed with how well they turned out. You continue to be my hero...

[bigford]

awww thats nice the aluminator is paying captain silicone a compliment LOL
tires look great nice and heavy

[RCP57]

awww thats nice the aluminator is paying captain silicone a compliment LOL
tires look great nice and heavy

Bahahaha!!!!!!!!!!!!!

Coop like em heavy and soft in the rear...

[DADSGARAGE]

Everything looks great so far....like the size of this build !!!
What is the size of the tires??? Two tires have a dull appearance did you sand them to remove the shine?? If so would lightly bead blasting them be an easier way to remove the shine..

[Cooper]

They (shiney ones) are recently made and still have some releas agent on them. The dull ones are older and more true to what they will finally look like.

[DADSGARAGE]

Ok got it....hey how big are the tires?

[Cooper]

Tire size = big!!
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/FCA82ADE-C814-4665-9B29-17BA8107AF7F_zpse3hoqtao.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/FCA82ADE-C814-4665-9B29-17BA8107AF7F_zpse3hoqtao.jpg.html)

Lol!! Almost 2 1/2" wide at widest point and just shy of 8 1/2 tall. Had some shrinkage , lol!!

And time for an animal torture pic, I just had to place the "bird" feeder next to window right after I moved the plant stand with the cat bed in it!! Lol!!
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/6DD27CB8-D1BB-43E1-A3B7-AE07BAF30001_zpsiv7atrdc.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/6DD27CB8-D1BB-43E1-A3B7-AE07BAF30001_zpsiv7atrdc.jpg.html)

I was out in garage and kept hearing a banging, cat chirping,,,, walked right up to the both of them and like I wasn't even there!! He was crying really weird and shaking.

Mission accomplished for him biteing me at 4 in morning!!!

[TRUCKMAKER]

Maybe he's just missing Mr nutter!

Tires are insane! This will be one great build when your done.

[DADSGARAGE]

Tire size does = big, those big tires will really add to the look of that truck when it is finished!! Keep up with the great work, always looking forward to seeing the new pics of this truck build......
KP

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/6CBE801F-72DF-4E45-9EB3-E99F752D915B_zpsa1tnynch.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/6CBE801F-72DF-4E45-9EB3-E99F752D915B_zpsa1tnynch.jpg.html)

Ok not looking forward to this operation. This may be one of the more difficult set ups and operations I have done. I don't have a centering chuck for this rotary table and even if I did I don't have the clearance. But the angles being cut will be parallel with table travel once moved off center. This is to allow the inner rims to be slid onto wheel hub then rotated for bolting two halves of wheel rim to the body of hub. Or should I have said like the 1:1 machines :). Ugg guess it's got to be done :).

[modelman]

Cooper-that cut seems to be a long way from the table. Hope your mounting is good. I haven't understood what you are doing with the wheels but I thought I would just wait until they were done. I'm sure it will be good. Question-why did you decide to make such a large truck at such a large scale? The reason I ask this is that most mines seem to match truck size with shovel size. I think they like to load with 4-6 buckets per truck. If you load this truck with your standard excavator that will be like "filling a 5-gal. bucket with a teaspoon". Do you have plans for a larger bucket or maybe a larger excavator? Keep the pictures coming.

[bigford]

there are plans for a large bucket rw just dont know it yet LOL!!!!!!!

[9W Monighan]

Bolt a piece of metal to your rotary table then mill a circular boss to locate your rims on center. Then you can place the next one on the table and it will be located. You will have to have a nice fit though. Make it big enough to have your studs for the clamps to screw in or double nut by using the slots then a nut to hold plate then long enough to clamp rim down.

[Northern Farmer]

Your work looks great, getting a kick out of squirrel pictures lol! :lol: :D

[Cooper]

Cooper-that cut seems to be a long way from the table. Hope your mounting is good. I haven't understood what you are doing with the wheels but I thought I would just wait until they were done. I'm sure it will be good. Question-why did you decide to make such a large truck at such a large scale? The reason I ask this is that most mines seem to match truck size with shovel size. I think they like to load with 4-6 buckets per truck. If you load this truck with your standard excavator that will be like "filling a 5-gal. bucket with a teaspoon". Do you have plans for a larger bucket or maybe a larger excavator? Keep the pictures coming.

Well,,,, I guess I like digging more than driving :lol: but that's the reason for such a large haul truck and small excavator to load. Also it's what I got :). When planning this type of truck I wanted to make the biggest (largest load capacity) I could. In the beginning I had excavator height to limit the build or it would have been a 797. The dumptruck I have is loaded with three scoops. That's too quick for me :). For my enjoyment I like the idea of taking a while to load and short amount of time to haul/dump.
As far as wheels, I'm done with one side for back axle rims, well almost have to cut some more. And the duel hub needs cut to accept rims. They are going to bolt onto wheel hub and when they do they will be clamping the tire. Hopefully no wheel/rim spinning. If it does happen I can mill of some material on inside of two piece rims. I made them a little thick for that reason. (I don't know what to expect with that silicone rubber in the long run. Hopefully by weekend I'll have one side done to show. Or by weekend I'll have more spare future build parts:D

[andyathome]

I cant wait to see the new excavator to match this awesome truck....

it has to be a large front shovel , but seriously I think the tyres came out fantastic.

cheers andy

[Cooper]

Your work looks great, getting a kick out of squirrel pictures lol! :lol: :D

Lol!! Thanks, I'm just as much a nut as that little tree rat in the pic:lol: more nuttier than an outhouse at a peanut farm :jaw::jaw::jaw:

[Cooper]

Bolt a piece of metal to your rotary table then mill a circular boss to locate your rims on center. Then you can place the next one on the table and it will be located. You will have to have a nice fit though. Make it big enough to have your studs for the clamps to screw in or double nut by using the slots then a nut to hold plate then long enough to clamp rim down.

Thanks Steve, I was thinking other end, was going to make a piece to chuck up in the mill and then slide into part. I guess what you said but up side down:lol: I think I'll go with what you suggest. I've been wanting to make a plate with a few holes machined into it that bolts to rotary table. Having something like that would give me more future clamping ability. I was planning on clamping part around bottom ring and also having a shaft (long bolt) up through center with plate to clamp from top also. Probably have to recess it so milling tools have clearance. Was wanting to use something around 3/16 for mill to get a small as possible inside radius on cuts. Plus the endmill I want to use has shaft same diameter as cutting blades. Can run right up along part without cutting too deep. Haven't had a mill crash in long time:eek: and don't want one anytime soon. At least this operation will not be 20min set up 1 min cutting time. And one of those parts that now I need to make more parts to cut the part!!!!

[ihbuilder]

"And one of those parts that now I need to make more parts to cut the part!!!!"

Welcome to the world of machining son :D

[Cooper]

Cooper-that cut seems to be a long way from the table. Hope your mounting is good. I haven't understood what you are doing with the wheels but I thought I would just wait until they were done. I'm sure it will be good. Question-why did you decide to make such a large truck at such a large scale? The reason I ask this is that most mines seem to match truck size with shovel size. I think they like to load with 4-6 buckets per truck. If you load this truck with your standard excavator that will be like "filling a 5-gal. bucket with a teaspoon". Do you have plans for a larger bucket or maybe a larger excavator? Keep the pictures coming.

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/58090E6D-E09E-491B-A164-6FFE1778599D_zpszpoejvyx.png (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/58090E6D-E09E-491B-A164-6FFE1778599D_zpszpoejvyx.png.html)

This may give you a better idea of what I'm trying to do. The bolt flange allows the rim to rotate past mounting ears then rotated a bit to line up bolt holes.

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/197DE9AA-0651-43CC-BB60-E289FFAA936E_zpsvkz4ebfk.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/197DE9AA-0651-43CC-BB60-E289FFAA936E_zpsvkz4ebfk.jpg.html)

Well this is what a couple hours in garage netted me tonight. Had to make new t slot nuts for bolts I have. (Metric/standard!! I've got all the wrong things I need!! One of these days I'll actually have what i when I need it!!). Still have to make a block for top that is recessed. That way I'll get the mill spindle clearance I need for a small endmill. It's going to bolt down from top, alignment boss bolted to plate, plate bolted to table. And also for security I will bolt down bottom ring to plate also. The bolt in center will be enough for light cuts I'm doing but why skimp on the tooling department!!! Lol!! Another tool/jig to add to pile. (That I will probably never have a use for again!!!

[modelman]

Cooper-that picture helps a bit but still confusing to me but no worries, I'm old!! Your fixture looks good but I would be careful with the aluminum threads. In my experience they will eventually fail. This probably doesn't help your feelings but I have at least a dozen fixtures that I used only one time. Seems like we spend more time making fixtures than actually making parts but I think that is part of the game. I'm enjoying watching..

[Cooper]

Yeah, I don't like the idea of alum threading for milling jigs but one offs don't bother me. And I'm sure I could get a couple dozen jobs out of this before any worries. And I have the aluminum stock on hand, no steel around to use. But,,,, I have been wanting to make a bolting plate for the rotary table. If I eventually do it will be made out of steel, something that I can use for whatever other projects the future holds. :)

Another thing on the list of toys and items I am going to steal from my fellow Canadian islander if I ever get out there, that steel fixture he has on his rotary table :lol:

[Cooper]

http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/2380B3D6-CEE6-44B1-A66A-09DEA363370D_zpshs5pduxd.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/2380B3D6-CEE6-44B1-A66A-09DEA363370D_zpshs5pduxd.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/D2946DBB-AA0A-4D0C-92DB-C44642D247DE_zpsca9czjeg.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/D2946DBB-AA0A-4D0C-92DB-C44642D247DE_zpsca9czjeg.jpg.html)


My setup for rims

And this is how they assemble
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/23CB5560-2AA3-4F58-B65B-1E6DE40BD37C_zpsch9abqen.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/23CB5560-2AA3-4F58-B65B-1E6DE40BD37C_zpsch9abqen.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/C790762C-287A-42E1-88D7-D8073AA685B6_zpswkdsiomf.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/C790762C-287A-42E1-88D7-D8073AA685B6_zpswkdsiomf.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/EE8B6E6D-A600-43F2-B689-7C1A28ABE4CE_zpssymxsh3q.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/EE8B6E6D-A600-43F2-B689-7C1A28ABE4CE_zpssymxsh3q.jpg.html)
http://i1357.photobucket.com/albums/q750/cooperford/RC%20construction/2540C274-C89B-437F-8241-39F6E6394E9D_zpsztyjhvba.jpg (http://s1357.photobucket.com/user/cooperford/media/RC%20construction/2540C274-C89B-437F-8241-39F6E6394E9D_zpsztyjhvba.jpg.html)

[RCP57]

I wish I could whistle through the keyboard sometimes. Nice work. I asked my father in-law to build me a larger hole filled plate but I think he forgot. I haven't used this one for a while but it does come in handy. Making tooling for a one time use sucks but cutting corners and F-ing up parts that are 99% done sucks more. Great job on the wheels. Now hurry the F up and get onto the next part... Oh, I have that other toy now:bounce::bounce:. When are you getting one?:cool:

[Mikem]

You got the Hayes !

[DADSGARAGE]

Nicely done, looks great!! Some parts of a build take far more time and effort than what we first thought and this type of milling takes time and you really need to be on your game with the rotary table...keep up the good work!!

[Cooper]

Reg, I think these wheel things are more work than making the tracks for the dozer!! At least I could day dream while cracking the handles on those parts!!

Dads, yeah,,, this wasn't the idea I had in mind at first!! Oh it will be simple, spin some wheels, make the hubs,, though the hard part would be threading for 2/56 bolts!!! Like I said above, and you are correct, the tedious cuts with the rotary table have got my jaws hurting from grinding my teeth. Only have two more rims to cut with the table:). One bad thing is I think the top spindle bearing is loose or going bad in my mill!! Gonna let it cool down and hopefully tomorrow I can cut the other two before having to tear into that. Just don't want to have set up again. Doesn't feel loose but making a rhythmic noise. If I remember correct one of the gears is plastic. I never have been happy with the bearings from the start, after breaking it in I tore it apart again because they just didn't sound right,,,,even called grizzley and remarked that something may be bad with them but that was two years ago. I wouldn't think bearings would go in less than three years on just alum work. ,,,,, yeah just rambling on , taking a break from not breathing while using the rotary table and keep thinking a little more,,, hoping the endmill doesn't bite and climb up the part!!

[RCP57]

No Mike, I didn't buy a Hayes. Think smaller with a lot less tires....

RW, yeah I feel your pain with things taking forever. When I made the diffs for my KW I was pretty stressed. With one completed my mill fried it's board so that added to the fun. Hopefully your bearing hangs in there. Once this hurdle is over there will be another and another and then it will be complete and you'll be bored and start something else that challenges you in a different way. It's a vicious circle for us scratch builder types.:rolleyes:

[headers]

Nice job coop it's coming along very good

[Cooper]

http://youtu.be/rDgTk9kdX6Y

Couldn't hold the wheel with one hand and spin it. Had to mount it in the lathe. Back axle with tires is up to 25 pounds.

[Cooper]

Well good news, bearings in mill are fine. But the cheep plastic gear is got play around shaft/keyway. Teeth look good so it's fine but I may look up hoss machine and see what he did with replacing plastic gears. Smeared some more grease on gears and good to go (for now).

[steamer]

The plastic gear is made that way to be sacrificial!! They do it that way in case of a jam up in the machine you loose a couple of teeth, and that's all. If Grizzly can supply you with new ones, I'd suggest you get a couple of spares as you are lucky after three years and it's still there. And If it's a loose as you say, it won't there much longer!!
Rob