making a snowthrower hydraulically driven

[wisedavis]

First off I'd like to thank you for allowing me to join. I think this a great resource for information and all a great way to learn from others. Plus we get to talk about tractors! Now with that being said, I've got a few things I'm trying to accomplish on my tractor. I have an '83 Allis Chalmers 5015 4x4. It's the same as a Massey Ferguson 1010. It has an 18hp toyosha diesel and 15 hp at the pto, which is only 540rpm. I want to use my back blade on my 3 pt along with a snowthrower I picked up from a simplicity garden tractor. I have the snowthrower loosely mounted ( just fitting right now ). I would like to mount a hydraulic motor on the snowthrower above the jack shaft and use a chain and then add the necessary pump on the engine and controls to run it. I was planning on using the quick couplings. I love this tractor but it doesn't have any front or mid pto and no other hydraulics other than what is used for the three point. I don't think the tractor's hydraulics will run a motor? I haven't bought a pump or a motor or controls yet, because I was hoping to find what I needed. The info needed, the donor tractor was a 17 hp and the snowthrower was driven by a pulley from the rear diff., much like a mule set up. Any responses will be appreciated.

 

[J_J]

Since you know the snow blower will develop HP less than 18, you will need to find a pump that will deliver the GPM and pressure to power your snow blower at the correct rpm.

If you used all the HP from your engine, you could turn a pump producing about 10.5 GPM at 2500 psi.

A hyd motor using that supply could develop around 15 HP.

The motor rpm can be figured by knowing the GPM,s and the displacement to determine the hyd motor rpm.

Go to Surplus Center - Tech Help, and select calculators and fill in the blanks.

Select pump and motor data for your computations.

 

[wisedavis]

Thanks, I guess I need to find out what rpm the blower should be running and see what type of ratio it has from the jack shaft.

 

[aczlan]

Thanks, I guess I need to find out what rpm the blower should be running and see what type of ratio it has from the jack shaft.

I would bet that the snowblower is expecting at least 2000RPMs, possibly up to 3600 RPMs (if it uses a PTO shaft vs belts) per the discussion at: http://www.mytractorforum.com/showthread.php?t=239544 and similar ones that I have seen over the years.

Aaron Z

 

[J_J]

One manufacturer says this.

Fan Diameter 20" (51 cm)
Hydraulic Flow Required 15 - 16 gpm

15 GPM in to a 3 cu in hyd motor would produce about 1,155 rpm

If the tractor hyd pressure was about 2500 psi, then the torque on that 3 cu in motor would be about 1194 in-lb

 

[Mighty Dodge]

Here's a co. that makes them. One model uses fluid from the loader, not sure it that's desirable. There's also a mid pto pump option. Not saying buy one but you might get some ideas.
Sheyenne Tooling & Manufacturing