Re: PC1800 Front Shovel (1/12)
 

Only a suggestion but why don't you go with an aluminum tank it would seem to have better heat transfer to help keep the oil cooler. Ed

Re: PC1800 Front Shovel (1/12)
 

Wow, you definately know what you are doing,,,, I'm curious to know how much force will be needed for the valve handles. The shorter you go the more force. I'll have to wait and see how you RC the valves, I'm assuming the hitec servos will be used. Short as possible arm or linkage. Again not questioning anything about your plans, just can't wait to see!!! Lol!! It seems like whatever we build, at first it appears to have plenty of space. Then when components start being placed all that space suddenly disappears!!

Re: PC1800 Front Shovel (1/12)
 

Just thought of something, on the valves, I assume they are spring loaded for neutral centering. Just a thought but having a servo being used, that would basically take place of the internal springs. Could eliminate them and have very little force needed for throw.

Re: PC1800 Front Shovel (1/12)
 

I believe the other guy removed the springs and mounted the servos more direct. I could be wrong though. It's happened before....:confused:

Re: PC1800 Front Shovel (1/12)
 

Joe, the batteries you see are 14ah each, the space under the cab could be used for one more battery if needed.....

Ed, yes an alm. tank would be much better....I can't weld alm. sold my tig a while back didn't use it enough....could have used it now...lol

Cooper & RCP57, Not sure that I really know what I'm doing but hey as long as it looks that way it's all good...lol...
The very first thing I did to the valve spools was to remove the springs, way to much force needed to move the controls with them installed, without the springs there is almost no resistance when moving the spools. Yes I will be using four Hitec 755 servos to control the valves, which should have plenty of torque and enough throw with big control arms. Originally I was going to remove all the valve control handles and housings and connect the servos more directly to the spools but then the ends of the spools would be xposed and getting any dirt on them would be bad, so that would mean haveving to build something to cover/seal the exposed spools. So using the "KISS" formula.....adapting and using what is already there seemed to be the easiest and most "simplistic" way of getting it to work. I might not cut the original control lever shorter because they will only need to be about 1" long so I will just thread some 1/4" round bar to match the original male threads of the long control lever/handles, then drill and tap the other end 6-32 to attach the ball links....or at least that's the plan for now...time will tell if this all works! :)

Re: PC1800 Front Shovel (1/12)
 

Built this cart/work bench to help organize all the "stuff" when doing a build, it has ten small removable parts trays for all the little parts etc. Even though it really isn't part of the build it will help with it...... never seems to be enough bench space for all the parts etc, this will help keep everything together and help avoid collecting all the parts on the main work bench. Usually my work bench is just a magnet that attracts everything but what you're actually working on...LOL

[IMG]http://i1291.photobucket.com/albums/...pshponfuyt.jpg[/IMG]

[IMG]http://i1291.photobucket.com/albums/...psatinspvl.jpg[/IMG]

Re: PC1800 Front Shovel (1/12)
 

I know exactly what you are referring to with parts scattered!! For a long time I keep wanting to get another cart, or make something like you did. But it becomes another thing to build and gets put on the back burner!!! One of those things that should have been built along time ago and still not done!!! Come springtime I'm going to be moving the shop to another house, maybe then I'll take the time to better organize!! I keep seeing workshops like yours , where things are organized and clean, and I can only imagine what I could cluster up in a short amount of time!! Lol:)

Re: PC1800 Front Shovel (1/12)
 

Cooper, the only reason you see pics of a nice clean work area is because many of us or at least I do....is to push everything of to one side into a big pile and then avoid getting it all in the picture...LOL

I put aside the hydraulics for now because I'm waiting on some parts to show up, which is good because it's giving me a headache trying to get everything to fit etc. So here are some other pics of what I have been able to build in the past while....


[IMG]http://i1291.photobucket.com/albums/...psxogw7nru.jpg[/IMG]

[IMG]http://i1291.photobucket.com/albums/...pskia14jeq.jpg[/IMG]

[IMG]http://i1291.photobucket.com/albums/...psod9lwd1j.jpg[/IMG]

[IMG]http://i1291.photobucket.com/albums/...psanaot5rt.jpg[/IMG]

I will be using the original tracks that came off the D11, not really to scale but they will work fo me. (10 more links/pads need to be added )

[IMG]http://i1291.photobucket.com/albums/...ps6tto3exo.jpg[/IMG]

Re: PC1800 Front Shovel (1/12)
 

The undercarriage.....

[IMG]http://i1291.photobucket.com/albums/...ps18es5faa.jpg[/IMG]

[IMG]http://i1291.photobucket.com/albums/...psbbhtxrto.jpg[/IMG]

[IMG]http://i1291.photobucket.com/albums/...psaiccqimq.jpg[/IMG]

[IMG]http://i1291.photobucket.com/albums/...ps3ci7hm2d.jpg[/IMG]

[IMG]http://i1291.photobucket.com/albums/...ps2kehs4vx.jpg[/IMG]

[IMG]http://i1291.photobucket.com/albums/...psoqiokacy.jpg[/IMG]

[IMG]http://i1291.photobucket.com/albums/...psctgnejth.jpg[/IMG]

Re: PC1800 Front Shovel (1/12)
 

Few more pics.....

[IMG]http://i1291.photobucket.com/albums/...psbls5lezg.jpg[/IMG]

[IMG]http://i1291.photobucket.com/albums/...pspxcy1vux.jpg[/IMG]

[IMG]http://i1291.photobucket.com/albums/...psvfjizpjf.jpg[/IMG]

I will try to get all the build pics up to date on this build....stay tuned!!:D
KP

Re: PC1800 Front Shovel (1/12)
 

Nice! Gotta love those clean cuts!

Re: PC1800 Front Shovel (1/12)
 

I see you are moving right along on this when do you find time to sleep? Ed:bounce:

Re: PC1800 Front Shovel (1/12)
 

Just curious, is the pattern on the sprocket done on the water jet also? Pressure back down for ingraving instead of cutting?

Re: PC1800 Front Shovel (1/12)
 

Reg, yes the cuts are nice and straight , remember this is no skill of mine just of a machine.....the quality of what you do manually is far more impressive!!

Jammer, I do sleep at night...lol...these are pics of what I have done over the past few months, I wish it was going together this fast....sadly that is not what is happening, if I get this done in the next year I'll be doing good...lol

Cooper, yes the pattern on the sprocket is etched, the machine operates at about half the normal cutting pressure and the travel speed is also increased which means it just doesn't have enough time to cut through the material, it does have it's limitations and the depth of the etch isn't really something that you can change, it is somewhat of a default setting.

KP

Re: PC1800 Front Shovel (1/12)
 

A few more pics of the undercarriage...

[IMG]http://i1291.photobucket.com/albums/...pstqxwnvsu.jpg

[IMG]http://i1291.photobucket.com/albums/...psiqoqmv7r.jpg

[IMG]http://i1291.photobucket.com/albums/...ps7ukadfwh.jpg

[IMG]http://i1291.photobucket.com/albums/...psvazcbmhg.jpg

I will be using one solid slider instead of bottom rollers, didn't have any black plastic...and yes I was using a drill chuck to hold the end mill while cutting the UHMW plastic:eek:....I was trying to make the sides look like what I think is called a full rock guard, kinda killed two birds with one stone with this idea just wish it was black, not sure how long plastic paint will stay on them, may need to do them again using black plastic....or down the road I might replace the slider with rollers, really want to see if and for how long this will work

[IMG]http://i1291.photobucket.com/albums/...psdtxe8coy.jpg

Hard to see the detail in this photo but you can kinda get an idea of what it will look like, still need to cut the slot for the track chain to run in.

[IMG]http://i1291.photobucket.com/albums/...pskyvd02w5.jpg[/IMG]

Re: PC1800 Front Shovel (1/12)
 

Very nice work!! I like the small details you are adding. This looks to be a very big machine and that should make working on it a bit easier. Seems like tracks are always the toughest to make and also has the most pcs. I will be watching.

Re: PC1800 Front Shovel (1/12)
 

Thanks Modelman, trying to get a few details in this build but my stuff usually ends up looking a little "plain jane" because I run out of patience near the end of the build.Tracks can take a long time, even the simple ones on this...glad to be able to use old ones from the D11.

Re: PC1800 Front Shovel (1/12)
 

Took a couple better pics of the track sliders installed

[IMG]http://i1291.photobucket.com/albums/...psdvzdrl0c.jpg

[IMG]http://i1291.photobucket.com/albums/...pscxki3jxf.jpg

Re: PC1800 Front Shovel (1/12)
 

Building the top carrier roller mounts, just needed to mill off the material that wasn't wanted and you end up with what is left behind.(which is the only thing that matters when machining parts ;) ) These turned out better than I thought they would, almost looks like the real deal...almost...lol

[IMG]http://i1291.photobucket.com/albums/...psuvsckauc.jpg

[IMG]http://i1291.photobucket.com/albums/...ps5ywzuvzo.jpg

[IMG]http://i1291.photobucket.com/albums/...pssnon4xq7.jpg

[IMG]http://i1291.photobucket.com/albums/...psdkl9frux.jpg

[IMG]http://i1291.photobucket.com/albums/...ps2zqzymye.jpg

[IMG]http://i1291.photobucket.com/albums/...ps9msfg3jh.jpg

Re: PC1800 Front Shovel (1/12)
 

What style bit is that in the mill? The first endmill pic?

Re: PC1800 Front Shovel (1/12)
 

This one??? Small 1" facing cutter c/w 4 inserts and R8 taper, works very nice in my little mill/drill, takes a bigger cut with less tool pressure...and that small machine needs all the help it can get.

[IMG]http://i1291.photobucket.com/albums/...psfhqu5gtn.jpg

Re: PC1800 Front Shovel (1/12)
 

Not sure why that photo is upside down....strange...it looks right on photo bucket, I'll try rotate it and see if it changes. First time that has happened???

Re: PC1800 Front Shovel (1/12)
 

It's right side up!

Re: PC1800 Front Shovel (1/12)
 

For the sliders you could try dyeing them black.

Re: PC1800 Front Shovel (1/12)
 

I was going to suggest that also, can't find the info I ran across sometime ago about painting/dye plastic , acetal. Someone painted something non important and then they used dye on another part. The dye penetrated a little bit verses the paint scratched off. It might even have been a thread on anodizing?!?!?? Couldn't find the info so I didn't say anything as it may have been a figment of my imagination too!!! Lol!!

Re: PC1800 Front Shovel (1/12)
 

You can buy black UHMW . No need to paint or dye anything.

Re: PC1800 Front Shovel (1/12)
 

Yes, that be it! I have a handfull of those inserts, though i did not k ow thats what they were for! I made a tool holder for one to use on my lathe, works good for aluminum. Chatters with steel! I believe i will be purchasing a facing cutter for sure now. Less stress on my little mill is what i thought would be a plus also!

Re: PC1800 Front Shovel (1/12)
 

Couldn't stop thinking about the hydraulics so today I built a prototype of the fitting needed in the valve body. Need two hoses for each port, 16 hoses total. Here are some pics of the 45 deg. fitting, #8 ORB to a double 1/8" NPT.

[IMG]http://i1291.photobucket.com/albums/...pskc6ikmwz.jpg

[IMG]http://i1291.photobucket.com/albums/...psj0puyzsq.jpg

[IMG]http://i1291.photobucket.com/albums/...psnsv1ohvy.jpg

[IMG]http://i1291.photobucket.com/albums/...psha7vpo1z.jpg


Built it as small and short as possible...I think it should work nicely...so just need to refine the design and build all eight fittings, time to go back to the garage :cop:

KP

Re: PC1800 Front Shovel (1/12)
 

Made a little more progress on the brass hydraulic fittings, got them turned/threaded. Then they were threaded in until they firmly bottomed out on the face of the valve body, this will insure that the angles are milled in the proper direction and that all of the small fittings for the 5/32 tubing are all pointing forward. Next job will be to mill all the flats and then drill/tap the hole for the small fittings....

[IMG]http://i1291.photobucket.com/albums/...psx9s31714.jpg

[IMG]http://i1291.photobucket.com/albums/...pskkjixfel.jpg

[IMG]http://i1291.photobucket.com/albums/...ps1ok52ouu.jpg


The ports and fittings will need be numbered because the valve ports will most likely all have different thread start timing.

Re: PC1800 Front Shovel (1/12)
 

What? :thinking:

Re: PC1800 Front Shovel (1/12)
 

He means each fitting will be machined to fit a given port because the threads will be cut different in every one. If he just makes the fittings and threads them in to any old hole they will point in different directions when tightened down.

Looking good KP!

Re: PC1800 Front Shovel (1/12)
 

Gotcha! Thanx :)

Re: PC1800 Front Shovel (1/12)
 

I got lucky on mine but thats what had happend to me to. It took a half hour of threading and re-threading before i found which way they went cause i did mark the sides but never labeled them!

Re: PC1800 Front Shovel (1/12)
 

What??? haha sorry Joe...I see Reg already nailed the answer for me...I even understand it better now...lol...Thanks Reg, well said!!

One other thing that would affect the orientation of the fittings would be the location of the bottom face in relation to the length and start point of the threads on each fitting, any changes to that would allow the fittings to rotate more or less before it bottoms out on the valve port face. And I know none of the fittings I made are exactly the same. :o;)

( For any technical support please contact RCP57, or just wait until he gets time to figure out my "BS" and then translate it into english!! :lol: )

Re: PC1800 Front Shovel (1/12)
 

"The ports and fittings will need be numbered because the valve ports will most likely all have different thread start timing."

I understood what you meant when you said this from a machining stand point but the sad thing is I've never played with hydraulics like this to understand what difference or importance it has. :o:confused::D

Re: PC1800 Front Shovel (1/12)
 

Enough about the boring hydraulic fittings, everyone is most likely sick of looking at them already...I know I will be by the time I finish machining them...lol...
Here are some pics of something a bit more interesting, building the center frame section

[IMG]http://i1291.photobucket.com/albums/...pslqqaqaku.jpg

[IMG]http://i1291.photobucket.com/albums/...ps33w4uujn.jpg

[IMG]http://i1291.photobucket.com/albums/...psrng7lciq.jpg

[IMG]http://i1291.photobucket.com/albums/...pssuvpskgu.jpg

[IMG]http://i1291.photobucket.com/albums/...psdfvmsrmh.jpg

[IMG]http://i1291.photobucket.com/albums/...psek7qh1pm.jpg

[IMG]http://i1291.photobucket.com/albums/...psmcqkjyfb.jpg

[IMG]http://i1291.photobucket.com/albums/...pshqw247zd.jpg

The two track drive motors ( banebots 256:1 gearbox 540 motor) will be mounted inside the center frame and #25 chain will be used to drive each track.

Re: PC1800 Front Shovel (1/12)
 

Here is my translation of KP's last post...

:bounce::bounce:SWEET!!!!!!!!!!!:bounce::bounce:

Re: PC1800 Front Shovel (1/12)
 

the wow factor just went up by 10xxx

Re: PC1800 Front Shovel (1/12)
 

And here is my judgement : Sweet Sweet Sweet........and so on....:bounce:

Re: PC1800 Front Shovel (1/12)
 

You certainly have one of the better assets that's gives you an edge over everyone else in this hobby, a water jet at your fingertips! :cool: