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#1
03-10-2021, 12:47 AM
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Bruder CAT Excavator Hydraulic Conversion
Just about done with this conversion. I originally went with homemade actuators but did not have machine tools and things started to go south after a few uses. So I decided to grab a mini mill and mini lathe from harbor freight and teach myself about how hydraulics and machining. I used mostly brass for the rams except for aluminum (6061) pistons. The pump has a aluminum housing with steel gears and the valve is aluminum and brass as well. I built a 4 way valve at first but after a few conversations I decided to go with a 3 way and make it smaller along with the pump. I was able to make the pump and valve much smaller with the same output. For the model I used aluminum, brass and 3d printed parts (thank you NebraskTrever for the pivot files) to add support and make some pivot points much stronger. All in all I am satisfied with the results. I will try and post a video but if I cannot, I will comment with a link to a facebook page I posted on. Thanks for the look
https://imagizer.imageshack.com/img922/2958/fmlWnS.jpg https://imagizer.imageshack.com/img923/5162/my2gtI.jpg https://imagizer.imageshack.com/img923/4853/mKiRPS.jpg https://imagizer.imageshack.com/img924/9236/95E441.jpg https://imagizer.imageshack.com/img923/2792/fclY9h.jpg https://imagizer.imageshack.com/img924/4695/DB3EdX.jpg https://imagizer.imageshack.com/img922/5570/HSF3LW.jpg https://imagizer.imageshack.com/img923/8892/zQLD9Z.jpg https://imagizer.imageshack.com/img922/1272/Df4GEh.jpg https://imagizer.imageshack.com/img924/7336/Bf1ntP.jpg https://imagizer.imageshack.com/img924/5660/bWSMEG.jpg https://imagizer.imageshack.com/img923/628/lnzPIU.jpg https://imagizer.imageshack.com/img923/1748/59X9eo.jpg https://imagizer.imageshack.com/img924/3889/jo0JwH.jpg https://imagizer.imageshack.com/img924/4996/pyBCRg.jpg https://imagizer.imageshack.com/img924/6299/dbEIpH.jpg https://imagizer.imageshack.com/img922/2650/keoXdE.jpg https://imagizer.imageshack.com/img924/3010/utSwpZ.jpg https://imagizer.imageshack.com/img923/8260/5wlT3m.jpg https://imagizer.imageshack.com/img924/5248/SwIsNh.jpg https://imagizer.imageshack.com/img923/5682/K7OiXz.jpg Last edited by mbudz10; 03-26-2021 at 04:51 PM. 
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#5
03-17-2021, 04:19 PM
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Re: Bruder CAT Excavator Hydraulic Conversion
mbudz10:
I'm seeing nothing. If you tried attaching images to your thread, this site does not allow that. I can't blame them, images burn up a lot of storage so by not keeping the image files on this site it costs less to maintain this site. The first thread in the Construction Equipment forum is a Sticky telling how to link to your images. Don
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