Hyd Pump - What did I just buy?

[Stuff]

ha i was playing with a backhoe like that the other day!


glad to see you got these pumps going!! would you say they are bigger then the conventional units out there now?

[Heavy Metal]

Originally Posted by Stuff

glad to see you got these pumps going!! would you say they are bigger then the conventional units out there now?

Yeah, its a little bigger...my Idex pump & motor rig is about same size as Leimback pump/motor/tank. BUT, the cavity plate and gears are similar in size so in theory could be re-worked to be about same size as Leimbach.

Originally Posted by ihbuilder

you bugger , you beat me too it

Yeah well Steve...it really working just yet. Once I got the leak fixed I'll declare it a victory.

[ihbuilder]

Joe get your leak fixed before changing anything . let me guess around the shaft ?

[Heavy Metal]

Yep, leaks around the input shaft. Will be trying a fix to compress the o-ring a bit more and let you know how it goes...

[ihbuilder]

I can get a shaft seal for them , but the specs are for low speed not to mention $$$ . when you dish out leave the area at the shaft in so it goes against the pump housing at the shaft . I was going to do what you did just have the motor stacked on top of the pump using a timing belt and gears/pulley much like verio's setup . I just have my rotary setup for hubs and don't want to take the jig off till the cnc mill is running . I def. got a bad sevo amp now just to get 1 or 2 , 1 for the 4th axis

[Heavy Metal]

Originally Posted by ihbuilder

when you dish out leave the area at the shaft in so it goes against the pump housing at the shaft. I was going to do what you did just have the motor stacked on top of the pump using a timing belt and gears/pulley much like verio's setup.

Actually, Steve that's pretty much what I did...there is only room for two shim washers and the o-ring...that way I add/remove washers to compress/decompress the o-ring. Seems to have worked.

I thought about the vario setup but this was fastest for now...and I didn't have the right belts and pulleys on hand.

Originally Posted by ihbuilder

I just have my rotary setup for hubs and don't want to take the jig off till the cnc mill is running . I def. got a bad sevo amp now just to get 1 or 2 , 1 for the 4th axis

Good luck on the mill. If I get a winner on the plate I'll cut one out for you to play with....anything to keep my wheel order moving up the queue. LOL. But no laughing at my tolerances...now that I am making a few precision parts instead of cosmetic I can't believe all the backlash in the little Taig. Some can be tightened and some compensated for in Mach3...just need to stop milling for an hour or two and do the maintenance.

Joe

[Heavy Metal]

Okay good news and bad news. Fixed the leak around shaft with more compression on the o-ring....but now I see a little seepage in the housing body which I think is just a design error...the raised lip on the plate that seats in the teflon ring pocket needs to be narrower and taller. Sealing the shaft was my main worry and looks like I might have that solved.

Will have to make a new plate this weekend and by then I might have a stronger motor to really test this thing out - the cheapo can motor just won't turn this pump once it gets up to pressure. If the new motor doesn't arrive by the weekend I might have to borrow the motor off my Leimbach pump.

Joe

[ihbuilder]

ya I smoked 1 of those cans on my vain pump . it worked till I tightened the tolerance on the vain . I'm not sure my vain pump idea is feasible considering what it was used for and the size motor it will need . But these lil pumps have a lot of potential right now I got enough for the dozer , pan and 2 others and looking for more

[Heavy Metal]

Yep...I like what I see with these little pumps so far. And yes...the can motor was burning up...I'd run it for 60 seconds then smells like I let the smoke out so let it cool...try again...I think I've just about killed it already. LOL.