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Old 03-22-2021, 11:42 PM
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sawdustdad sawdustdad is offline
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Join Date: Dec 2012
Location: USA
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Quote:
Originally Posted by DRohacek View Post
Unfortunately swapping the ring gear will not change the fact that the pump is turning the opposite direction. Years ago I built a Cub with a 3.1 Buick engine driving it. As I did my research about turning the charge pump 180 degrees I now remember also reading about others that had done so. The (fish swim) is an interesting way to describe it. Anyway, the article I was reading basically said that it wouldn't hurt anything to run it this was but, what you will experience is as you move the travel lever from neutral it will not be smooth as the factory intended. The reason the plate is chamfered is for a smooth engagement as the fluid is directed that way. What I experienced was somewhat of a lurch as I engaged forward. I didn't think it was a big deal since I was powering it with a V6 car engine anyway.

Something that comes to mind though is you could swap the ring gear to change the travel but to cure the direction of the input issue you could consider a jack shaft from the rear drive shaft up the the front rear. That way the pump would be turning the proper direction.
I'll drive both hydrostats correctly--one from the "front" CCW, one from the rear, CW. First, turn the engine around, the forward axle will have rear differential cover facing forward, the rear axle will have the differential cover facing the engine. Still be trying to turn two hydros to start the engine unless I do as you suggest and raise the engine up and use belts again....Maybe I'll put a gear drive Cub clutch in it.

I'm going to start another thread on mini-dozer build. Let's take this discussion over there.
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