Cat 374 Excavator build

[supraman]

Did a little bit more , Started the bucket and the engine cover . I am maybe an idiot , or just a cheapskate I think 2 Jung pumps will cost too much as so far i have made what i have , using materials i have had for years and only spent money on a few motors and some fittings so far .
Any way back to my "cheap " idea . I have been thinking of modifying a motorbike engine oil pump , But i will start experimenting tomorrow - the theory ( in my mind at least ) says it should be doable ,, we will see . I will let you all know how that goes

[RCP57]

Wow! Are we related somehow?lol The machine looks great and I totally hear you on the cheap thing. I ended up buying a Jung pump for my 1/10 Volvo EC300D but only because I was impatient waiting for my father in-law to machine the case for my Honda 50cc oil pump gears. I ended up using the "Honda" pump in my Tigercat 630D and it works OK. I'm not sure if all motorcycle oil pumps share the same profile but the gear teeth are very round and course. My pumps seem to move a lot of volume at low pressure but as the pressure comes up they are not nearly as efficient. Having said that, they do work though! I used to mess around with Honda 50's a lot so I had a few stock oil pumps and that's why we used them. The gears themselves are very close in size to the Jung pump I bought but a much different profile. If I did it all again I would spend the money on the Jung but the other type will work. You may just find that it's not very efficient. Hope this helps. Keep the pictures coming!

Reg