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2 Stage Log Splitter Pump

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#1 jrk OFFLINE  



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Posted September 09, 2011 - 11:20 PM

Has anyone ever experimented with using a 2 stage pump (log splitter style) to act as a dual transmission (low pressure / high gpm) for cruising along under minimal loads and (high pressure / low gpm) for pulling heavy loads. Seems like it would be an ideal solution other than not being able to control precisely when the pump switches back and forth.

Does anyone see a reason why this wouldn't or shouldn't be use?

#2 mjay OFFLINE  



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Posted September 10, 2011 - 01:41 AM

I think the lack of control over the switching point would be a killer, and the low pressure pump is very low pressure (probably not enough to move a tractor with).

Better to have a normal pump and 2 drive motors connected together on the drive. Then you have a switch to change them between being plumbed in series and in parallel. When in series it will go fast with less power, when in parallel it will go slower with much more power.

On my hydraulic tractor I just use a normal pump and motors and use the metering on the valve to control speed.