Hydraulic motor sizing/performance question

[wpabx2230]

I bought a Danfoss DH36 on eBay cheap. I had no idea how it would work. It works very well. It is plenty fast enough. I used the stock rotation
setup but ground the notches the entire way around the chute. See attached photos of motor mounting.

 

[Jay4200]

Wpabx2230 has pretty much exactly the setup I want do build. He even has the same snowblower, although his tractor is a couple of years newer . Whats the spin rate on that thing?

Thanks for the explanation of cu-in rating - makes perfect sense. 500 RPM might be a little fast, but probably not outrageously so. I could always put in a flow restriction if need be.

Why hydraulics instead of electric, you ask? With a loader setup installed, the BX22xx quick hitch uses the loader valve to lift and lower the blower. Since the controls are already there for an extra degree of freedom, why not use them? A joy stick up and down for lift n' lower, then back n' forth for rotation is about the most intuitive control I could imagine, and I've always wanted to set up a joystick chute control - the BX has me 1/2 way there already. Hooking a hydraulic motor to the existing chute rotation mechanism is trivial, as shown above. Setting up a cylinder is a seriously complex and expensive proposition. I have a hydraulic cylinder rotation (and flapper) on my big blower - the cable/hoop mechanism would be complex to build, and must be precisely engineered, as evidenced below (and yes, I know the chute cable is routed backwards - left over from the PO - its fixed now):

 

[J_J]

You can either gear the motor down or use a priority valve to send a few GPM's to the motor. The Excess flow will go to tank or to another function.

For example, with a 10 GPM flow, the flow control valve would supply 2 GPM to the chute motor, and the other 8 GPM would go downstream for the 3pt.

You can go large cuin, but might be more expensive, larger fittings, etc.

A divider valve will send a dedicated flow to the chute motor and the rest to the 3pt.

11.9 cu in GRESEN 1016 HYD MOTOR

 

[BukitCase]

Seeing the pix makes a bit more sense of this - in effect, those notches and the "rotary spring" are acting as a worm gear, so your 500 rpm would probably translate to maybe 3-4 seconds for a full rotation of the chute.

Prior to the pix, it sounded like you were going to direct drive the chute - hence my smart-azz comment :laughing:

Gotta forgive us "non-snow blower people", we got about 8 inches this year, typically around 0-3", and prior to this year the late 60's was the first and last time we ever saw more than a foot... Steve

 

[Jay4200]

Gotta forgive us "non-snow blower people", we got about 8 inches this year, typically around 0-3", and prior to this year the late 60's was the first and last time we ever saw more than a foot... Steve

You don't know what you're missing - nasty machines. My big blower could easily eat a car. As for the smart-azz comment, I thought it was pretty funny.

 

[BukitCase]

Jay, glad you took it as it was intended - plus, I learned something about a piece of equipment I DO NOT lust after

(If you knew me better, you'd appreciate just how RARE that is )...Steve

Oh, BTW I was stationed in Mass. for about 2-1/2 years in the late '60's, so I DO know what I'm missing - and I'll KEEP ON MISSING it, thanks very much :laughing: