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Hydraulic snowcaster

3184 Views 12 Replies 4 Participants Last post by  TUDOR
Howdy guys. (more specifically all the hydro gurus out there) :howdy:

It is getting near the end of summer, and I am re-visitting a idea of mine.

As most of you know, I have mounted my snowcaster on the back of my tractor and i have been driving the unit with a B&S 11 HP. This concept works very good. But.

I was always planning to put a Hydraulic motor on this snowcaster at some point. (This point and time is now)

So this brings me to this question. (and this is where I wish i had the help of some ""very knowledgeable hydraulic guys"")

If I were to use a .58 Cu. In. Gerotor motor to turn the jackshaft on my snowcaster at its top rated speed of 5000 rpm at 15 GPM, would this give me enough torque to "compare to" a 11 HP B&S engine?

Here is a link of the specs on the motor in question?

What do you guys think?

How many GPM does my 224 deliver? and if less than 15 will this reduce the torque in question of 184 In. Lb.

:eek:mg: Here I am again, asking more questions than i can handle. :fing32:

Thanks again for any help fellas, I appreciate all inputs.

BTW, My 224 is going on its, 4th year with the loader and 2nd year with the blower on the back and all is well with the frame. No evidence of stress on the frame. (I do believe the 200 series are strudier frames) :dunno:

Anyways, what say you, does 184 In. Lb. of torque compare to a 11 B&S turning at 3600 RPM?


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I feel for you on the shed issue. Mine didn't survive last winter and I'm still figuring out what to do.

Hydraulic motor torque is dependant on the pressure available and the displacement of the motor. It's fairly consistent throughout the rpm range.

From this, comes this formula.

Relationship between displacement and torque of a hydraulic motor

T = D x PSI ÷ 24π

T is torque in foot-lbs; D is displacement in cubic inches per revolution; PSI is pressure difference across motor; π = 3.14

Note: Flow is not mentioned. At zero rpm there is minimal flow for the internal clearances, but full pressure can be available, and so can full torque.
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