Re: Converting Belly Mower to Hydraulic drive

Posted by T.R.K. on October 13, 2006 at 18:39:11 from (152.163.100.74):

In Reply to: Converting Belly Mower to Hydraulic drive posted by EIEIO on October 13, 2006 at 18:25:11:

This is not as easy as it seems.

1. I am sure 5.7 GPM is not enough flow to get the hp you want at the rpm you will need. You need to know how much fluid your hyd motor will need per minute to transfer the hp you want at the speed you want.

2. heat is a by-product of constant loaded hydraulic circuits like you are proposing. The oil gets too hot and looses its anti-foaming abilities and also the heat is hard on 0-rings and other seals. I doubt your tractor was built with an oil cooler in the hydraulic circuit. Another way around this is to make the hydraulic reservoir great big, but then you have to have a way to mount it and it will take a lot of expensive fluid.

You mention using a high pressure hydraulic gear pump. I am thinking that most hydraulic motors are the vane type or gear-rotors. I think it is because they develop more torque per cubic inch displacement than a plain gear pump.

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