Quote:
Originally Posted by Ambush
I’ll have to go back and look at your build better. Do you have your two hydro pump shafts coupled together. ie, rear of front pump shaft to front of rear pump shaft?
The “jamming” sounds mechanical to me. Possibly something in the diff assembly.
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Yes, there is a common shaft that joins the two hydros.
The "jamming" is definitely in this one hydro. I think the first video I posted demonstrates that.
Quote:
Originally Posted by Ambush
Not sure I should say this, but I'd go back to the original belt drive idea, but with a good cog belt and pulleys. Its a very dangerous plan to run gear pumps and motors from the same reservoir as piston pump/motors.
It is very possible that under a sudden heavy load either your gear pump or motor will momentarily "seize" as the gear defects from pressure and gouges into the housing. This can happen also is initial break in procedures are not followed. And its particularly prevalent in the "cheap' components. Once the relief reacts the gear relaxes.
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I figured the hydrostat is fed from the filter so that would prevent any contamination of the piston pump/motor from the gear pump/motor wear particles.
I originally was looking at a separate reservoir, cooler, etc, but space is tight and this looked like a simpler solution.
But you've pointed out a possible problem with this arrangement, and I appreciate that.
I looked at the cogged belt or chain drive as possible solutions but could not find a combination of pulleys or sprockets that would easily work. I'll look at that again. It's possible the belt arrangement I had would work fine and the belt failure I experienced was a fluke caused by the jamming hydro and once I fix that, the belt drive may be fine in the long term. Certainly simpler.