Re: Great Dane excavating co.
 

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

Re: Great Dane excavating co.
 

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

http://i1275.photobucket.com/albums/...pstweow7ao.jpg

http://i1275.photobucket.com/albums/...ps7frlza2p.jpg

http://i1275.photobucket.com/albums/...pskudm2jqn.jpg

The biggest loader I've been around...

http://i1275.photobucket.com/albums/...psjvxgb1tm.jpg

Re: Great Dane excavating co.
 

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.

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...pszgmv5cym.png

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

http://i1357.photobucket.com/albums/...psct1wsvym.jpg

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.

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...ps5kf54rvp.jpg

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

Re: Great Dane excavating co.
 

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/...psdc603x1i.jpg

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/...psmjnylmg7.jpg

Re: Great Dane excavating co.
 

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...

Re: Great Dane excavating co.
 

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?

Re: Great Dane excavating co.
 

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 !!

Re: Great Dane excavating co.
 

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 ;)

Re: Great Dane excavating co.
 

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

Re: Great Dane excavating co.
 

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

Re: Great Dane excavating co.
 

Couldn't wait, had to pull it out.

http://i1357.photobucket.com/albums/...psaiih7zdq.jpg
http://i1357.photobucket.com/albums/...ps8mllpaou.jpg
http://i1357.photobucket.com/albums/...pslqqughvl.jpg
http://i1357.photobucket.com/albums/...psdvwnm3sn.jpg
http://i1357.photobucket.com/albums/...pspw6n0v4m.jpg
http://i1357.photobucket.com/albums/...pspejig39i.jpg


And the pinch test, duro 60, wanted them to be hard enough not to roll and stay put.
http://i1357.photobucket.com/albums/...psus7m313u.jpg

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/...ps639sd4fe.jpg

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.

Re: Great Dane excavating co.
 

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?

Re: Great Dane excavating co.
 

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!!

Re: Great Dane excavating co.
 

its a bird its a plane its super cooper!!!!
http://i1335.photobucket.com/albums/...psshjt4tta.jpg

Re: Great Dane excavating co.
 

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





Jacka$$!!!! Lol!!

Re: Great Dane excavating co.
 

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:

Re: Great Dane excavating co.
 

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....

Re: Great Dane excavating co.
 

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

Re: Great Dane excavating co.
 

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

Re: Great Dane excavating co.
 

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?

Re: Great Dane excavating co.
 

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.

Re: Great Dane excavating co.
 

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

Re: Great Dane excavating co.
 

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.

Re: Great Dane excavating co.
 

Give me a min, I'll go look.

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...psdybl5563.jpg
Yup these should work?

Re: Great Dane excavating co.
 

that little motor for that big rig LOL!!!

Re: Great Dane excavating co.
 

Lol, picked them up for another project,
http://i1357.photobucket.com/albums/...pscl2qvyvj.jpg
http://i1357.photobucket.com/albums/...psn2nfsfpe.jpg

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?

Re: Great Dane excavating co.
 

Haha got ya, check your mail!!!

Re: Great Dane excavating co.
 

You want it to be able to do this right?...https://youtu.be/LtbxUR9raN0?list=PL...PKlAqXQU81-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=rAHZ...PKlAqXQU81-vMh

Re: Great Dane excavating co.
 

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

Re: Great Dane excavating co.
 

LOL!!!! wow you just wrong!!

Re: Great Dane excavating co.
 

you got mail.....

Re: Great Dane excavating co.
 

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

Re: Great Dane excavating co.
 

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

Re: Great Dane excavating co.
 

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

Re: Great Dane excavating co.
 

http://rs1152.pbsrc.com/albums/p497/...d-out.jpg~c200

the look on your face after opening a email from RW

Re: Great Dane excavating co.
 

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

Re: Great Dane excavating co.
 

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