Re: Great Dane excavating co.
 

You'll forgot to clear out your browser history
One of these days... LOL!!

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...psj2xzcefq.jpg
http://i1357.photobucket.com/albums/...psypos5aek.jpg
http://i1357.photobucket.com/albums/...psar8vw3c9.jpg

Got the new motor mount installed. Once everything is together it will be better looking. Also moves the motor back towards tranny, eliminates the wobble from having the driveshaft extended so far. Next is to solder up connections and find out if it actually is a better drivetrain.

Re: Great Dane excavating co.
 

Glad to see progress on the rock truck.

Re: Great Dane excavating co.
 

glad to finally get some time to work on it!!!

https://youtu.be/Un8oxKMGBoc

a rather shaky video , I was trying to hold camera and controller at same time. I still have to do some fine tuning on radio to smooth it out but new motor combo is working better.

Re: Great Dane excavating co.
 

Sweet! now you need something big to load it

Re: Great Dane excavating co.
 

Nice to see it moving cooper-I know you have a lot left to do but do you have a way to make the diff more like a limited slip set up? Looks really good so far!!

Re: Great Dane excavating co.
 

yes, at the moment I have no oil in the diff so it slips pretty easily. everything is just pieced together for testing. with such a big model I definitely need the slip and am planning on using some thick diff oil/grease. the one thing that bothers me is the driveshaft, even new it has some slop in it and I'm sure that is going to be the weak link in the drivetrain. may have to revisit that part, find something with closer tolerances or make one.
oh, and in the video when it does slip the camera doesn't show it but it was trying to climb about 40 degree angle on loose uneven dirt. I want it to be able to climb around 30 degree roads fully loaded. I don't know what haul truck are capable of climbing loaded but that's what I'm shooting for.

Re: Great Dane excavating co.
 

was looking at what others have done and I think I will plan on what you are talking about, probably harvest one from local harbor fright store. another item on the to-get list and another on the to-do list :lol:

Re: Great Dane excavating co.
 

Cooper try these guys. I put three axis on my mill and so far I'm really pleased with them
Here's a link to there site and you'll be pleased with the cost, and they're allready made for mill or lathe application.
Rob

http://www.igagingstore.com/category-s/1831.htm

Re: Great Dane excavating co.
 

Thanks rob, that's helpful!!

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

Ok , starting on the double acting telescopic cylinders. I have no plans just some ideas kicking around in my head. I'll try and post pics as I build them.

Oh and I got a new garage, had to make things somewhat even with the other half, she got a new mouser!!

http://i1357.photobucket.com/albums/...psmy5er5zd.jpg

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...psrpsge30i.jpg

This is going to be the bottom/first stage of the cylinder. Oil port for retracting and the tube will extend to the top of first stage for extension. They will be welded together(I think). Steel is definitely easier than alum. The tubes are stainless and all areas where seals will be are going to be made from steel. Easier for the internal grooving tools I have.

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...psimxee76z.jpg

Got the first stage seal caps done, these will get drilled for first stage rod, figure attach them then drill and groove. Will keep everything on centerline.

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...pse7rasnso.jpg

All small parts are turned, next is to weld them together and get exact lengths of tubes.

Re: Great Dane excavating co.
 

so is there any work going on in the digging in the yard ?

Re: Great Dane excavating co.
 

Still waiting on gas guy to hook up gas line then I can push ditch closed. And waiting on trees to be delivered (been too dry to dig um) then the stone wall can start being built. That is when the real 1:14 work will begin.

Got second to third stage seal done. Figured it the biggest diameter to start with. A little tight so I may have to readjust my tolerances. No real info on how much to compress 1/16 o rings for rated pressure.
http://i1357.photobucket.com/albums/...psjrqzy5sr.jpg

Re: Great Dane excavating co.
 

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

A better picture showing one done and the other in pieces before hole and welded

Re: Great Dane excavating co.
 

Motivation

http://i1335.photobucket.com/albums/...ps9seo5zaj.jpg

Re: Great Dane excavating co.
 

Great work with the cylinders) There should be info at the web concerning groove tolerances to found. I would also keep in mind not have the o-rings too thigh with concern to the dead weight of the dump box must be able to push the cylinders back in 'easily'

Re: Great Dane excavating co.
 

They will be double acting,

Re: Great Dane excavating co.
 

He will be suckin and blowin both ways!!!

Re: Great Dane excavating co.
 

:lol::lol: :lol: nice to see your taking up the slack while Reg is off. :D


Seriously though, looking great RW. I know your a thorough kinda guy and crunched the numbers already :rolleyes:;). What kinda power these bad boys going to have?

Re: Great Dane excavating co.
 

Large stage should have about 270lbs at 350 psi. Small stage is around 70 pounds. And with two cylinders I hope the large stage goes up first and it should then middle and last small rod. And I'm going to have to play with pressure, if I don't need it that high I'll back down to minimum I can get away with.

Some more work.
http://i1357.photobucket.com/albums/...psxfe9dqms.jpg
http://i1357.photobucket.com/albums/...psyzrij5bj.jpg
http://i1357.photobucket.com/albums/...pse1kliacd.jpg

The small tube is for retracting and hole is for extending stages.

Re: Great Dane excavating co.
 

This was my first attempt to weld the internal oring caps on.
http://i1357.photobucket.com/albums/...ps6ib5cr3f.jpg


I changed design to make it more user friendly for welding and having a nice square inside edge
http://i1357.photobucket.com/albums/...psxltau952.jpg
http://i1357.photobucket.com/albums/...ps4dadeqhe.jpg
http://i1357.photobucket.com/albums/...psghbreox1.jpg
http://i1357.photobucket.com/albums/...psaqipjefe.jpg

Now I have to cut the vent ports,,, should work and then test how well my tolerances worked out. :)

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...psuvyswn1b.jpg
http://i1357.photobucket.com/albums/...pscas77gt1.jpg
http://i1357.photobucket.com/albums/...ps5kod7lxm.jpg
http://i1357.photobucket.com/albums/...pso11rwwhe.jpg

One more to clean up :). I may have a fatal flaw in location of secondary vent hole?? If so I'll just have to make up a new secondary cylinder with hole in different location.

Re: Great Dane excavating co.
 

Looking sweet! I welded up the piston rods like that for my Tigercat and it works great. Yours are 100 times nicer so they will work perfect.

As a bonus I give you this...

http://i1293.photobucket.com/albums/...psm72skpcc.jpg

Re: Great Dane excavating co.
 

TREE RAT!!!!

Re: Great Dane excavating co.
 

Thanks!! I thought my lil' nut eaters got run over or a hawk got them. Didn't see them for a week, today was first day the one came around. And it's defiantly him, can walk up to him. Don't know where his other got to. Probably flat on pavement.

Re: Great Dane excavating co.
 

LOL. We don't have very many squirrels here anymore for some reason. Up north where that picture was taken, there are tons of them!

Re: Great Dane excavating co.
 

well I got everything hooked up and after all day yesterday messing with one cylinder I finally figured out the easiest way to bleed air, just run it!!! my testing was using a small hydro pump for up, then reversing the inputs for down, only problem was I was trying to pull/push air. once I hooked it up to the valve and ran it through a few cycles all air is gone . I'm uploading a couple videos on my slowboat internet, sometime later today? maybe tonight ? they are working, I may have cut my one stage oring a little big by .002" it leaks when fully extended, not bad but it also may be oring cut. as they were the first test rings and didn't replace them for this testing video to follow :)

Re: Great Dane excavating co.
 

https://youtu.be/2E9kvMDDfhA
With bed on

https://youtu.be/Qv_xOE2hU9Q
This was the first time they both moved.

I had my locations close, but I'm making new upper mounts for top pins to go into on the bed. They can be moved about 1/4" that will give about 3 more degrees of tilt. But the main reason for that is so the cylinders will be resting when bed is completely down and not under pressure. I still don't know how much she will lift, with all the math and measurements to take I just hope a wet bucket of sand :). And I only have light duty hose hooked up. I did order more 350psi hose and found some 5/32 700psi rated hose. As long as I can keep fittings together I'm sure I'll have the power to lift. I don't know what pumps are rated but it's the one from premacon and I know I'll never have something to max out one of those pumps. Now for this project the larger pump they offer may have been better for increased flow. Takes a good bit of oil the full those cylinders. 1" top stage, 3/4" second stage and 1/2" third. Glad I made a big tank :).

Re: Great Dane excavating co.
 

Nice!

Kerst

Re: Great Dane excavating co.
 

https://youtu.be/TGXxCXm2ySk

Ran out of any heavy items to stuff in the bed!! I'm pretty confident that whatever I can get in the bed, the truck will be able to dump it!! I do have to cut a relief in the tank cover and move the pressure gauge housing on account of cylinders being I the way. Just enough to have to move them some. Originally I was planing on having the bolts on bottom of large stage just like the 1:1 machines but assembly was easier to make them the way I did.

Re: Great Dane excavating co.
 

Thank you , I'm still amazed at the work you are able to do!!!

Re: Great Dane excavating co.
 

Cooper-I'm not being picky because this is a GREAT model but the dump looks a bit slow to me. Is this the finished version? However-this will give you time to grab a beer while it is dumping. Will you have limit switches on the box? Great work!!

Re: Great Dane excavating co.
 

Looks good RW, I wouldn't think a 5 gal. bucket of wet sand would weight more than the steel you stacked in the back. I'd say it'll lift about anything you could or would actually haul in it. Can't wait to see it finished and in the dirt!

Re: Great Dane excavating co.
 

In the videos it is running the pump pretty slow and I have not installed fitting very tight. This one could have benefited from the higher flow pump but I got what I got :). A lot of oil is being pumped into those cylinders. She is far from finished, still just finding out if things work. :).

Re: Great Dane excavating co.
 

As I'm the only other person that has seen the cat I can
Tell you the size of it is off the charts huge don't cut it...

Re: Great Dane excavating co.
 

Someone wanted to see a size comparison of this 1:14 scale 785 with same d11. For those that have seen the dozer in person. ,,,

http://i1357.photobucket.com/albums/...pspriv22ih.jpg
http://i1357.photobucket.com/albums/...pswocfvjp0.jpg
http://i1357.photobucket.com/albums/...psqcyzxzrx.jpg

She is a haul truck:) new way to tote around the d11

Re: Great Dane excavating co.
 

http://i1335.photobucket.com/albums/...ps9seo5zaj.jpg
http://i1335.photobucket.com/albums/...pszefzhse4.png

Re: Great Dane excavating co.
 

good god!!! I'm not picking them up with you!!!