Bruder CAT Excavator Hydraulic Conversion

[mbudz10]

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

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