Re: ford hydro
If you had shared this info in the other thread, I'd have told you the following.
I don't believe that you can do what you wish to do and here's why.
A hydrostatic pump is a variable output pump and it is bi-directional as well. This pump is dedicated to providing oil flow to the hydraulic motor that propels the trans-axle in one direction or the other. It is a closed loop system and you cannot tap into any part of that flow.
Because it is a closed system, the hydrostatic pump also includes a small gear pump, called a "charge pump" that puts out a small gpm at a low rpm to provide "make up oil" for the hydrostatic closed loop system and to also circulate a small amount of oil through the hydro pump while the hydro pump is sitting in neutral. Thjs is done to keep the oil that is inside the hydro pump from overheating.
Assuming donimbimbo calculated the displacement correctly, then that displacement refers to the max amount of oil that the variable output hydro pump can produce at wide open throttle. To me, it sounds exceptionally high but that is neither here nor there for the purposes of this discussion. The question that you want answered is "How much oil is available for me to use elsewhere?"
The only time that the hydrostatic pump is actually pumping oil is when the tractor is moving forward or backward. If the tractor is sitting still, then the hydro pump moves zero oil. So, all you are left with is whatever amount of oil the charge pump moves on a continuous basis. My guess is that you might have 3 gpm at the 800 psi mentioned by donimbimbo and while that is adequate for a hydraulic cylinder, it certainly won't be enough to power up a motor strong enough to drive a snowblower.
No, I am not an expert on Ford GT's but I do have considerable experience with Case GT's and they are totally hydraulic drive and some models use hydraulically driven decks and snocasters. To be absolutely certain that you are getting the best info, I suggest that you go to Eaton's website and see if you can find the spec's for the pump mentioned by donimbimbo. If in doubt as to what you are looking at, then call their customer service and have them put you through to the tech department so that you are talking to someone who knows these pumps well.
In my opinion, you will need an oil flow in the region of six gallons per minute minimum from a pump capable of generating 2000 PSI, not 800 PSI. Flow is what spins the motor at a certain speed but it is pressure that does the actual work.