Results 1 to 7 of 7
  1. #1
    Platinum Member
    Join Date
    Apr 2000
    Posts
    754
    Location
    Saline, Michigan
    Tractor
    Kubota L3700SU; Hustler Super-Z 66in

    Default Hydraulic Snow Blower for FEL

    My neighbor had an old Jacobson snow blower attachment that he wanted to attach to his FEL inplace of the usual bucket. After making the attachment brackets for the blower, we set about working on supplying power to the unit.

    We used his mid-PTO to power a hydraulic pump that hangs under the front bumper. From there we simply plumbed a motor and tank. When the PTO is turned on, the pump spins and the blower becomes active.

    We've sized the hydraulics for 3000 psi and 20 hp from the PTO shaft. It was all fairly easy...just a little fiddly at times.

    The photos show the blower and some of the plumbing. I still need to get a photo of the PTO shaft bearing supports and pump coupling.
    Attached Images Attached Images
    -Peter

  2. #2
    Advertiser kennyd's Avatar
    Join Date
    Jul 2003
    Posts
    12,100
    Location
    Westminster, MD
    Tractor
    John Deere 4110, 455

    Default Re: Hydraulic Snow Blower for FEL

    Looks Good!
    But the hydraulic police are going to be all over all that black pipe and cast fittings used under that amount of pressure.
    KennyD
    www.boltonhooks.com



    Bolt On Grab Hooks, Weld On Grab Hooks, Specialty Chain and Rigging Accessories, Specialty Hydraulic Components.

    Simple JDParts Tutorial HERE

    Visit our YouTube Channel

  3. #3
    Platinum Member
    Join Date
    Dec 2006
    Posts
    706
    Location
    Columbus, Georgia
    Tractor
    Kuborta B2400, L2900, L4330; Caterpillar D3B, John Deere 455D

    Default Re: Hydraulic Snow Blower for FEL

    That is quite a project. I look forward to seeing how you mounted the pump and what couplings you used to connect it to the PTO.

    In the meantime, could you fill in some details? What brand of hydraulic motor is that, cubic inches, and rpm? It looks shorter, but bigger around than many I have seen. Is it a vane, piston, or geroter motor? It looks like the pulley came off something else. Did it fit easily on the motor shaft or did you need some sort of adapter?

    What kind of pump did you use? When you are not using the snowblower, do you leave the pump on the tractor?
    How low to the ground is the pump?

    Thanks.

    Chuck Ford

  4. #4
    Platinum Member
    Join Date
    Dec 2006
    Posts
    706
    Location
    Columbus, Georgia
    Tractor
    Kuborta B2400, L2900, L4330; Caterpillar D3B, John Deere 455D

    Default Re: Hydraulic Snow Blower for FEL

    After studying your pictures I answered one question and came up with some more. The motor pulley looks like the taper-lock type that must have been on the old driveshaft. Is that an adapter you put on the motor shaft to connect it to? Will you have to use two belts like in the original?

    What does the soft copper tube from below/behind the motor connect to?


    Does the FEL lift the snowblower or does it roll along on its own wheels?

    We have not had snow in Columbus, Georgia since 1993, and even then a stiff broom was enough to clear the walks. But your basic concept seems to have many applications if you mounted the hydraulic reservoir on the tractor so that the only thing needed on the attachment was the motor.

    Thanks.

    Chuck Ford

  5. #5
    Platinum Member
    Join Date
    Apr 2000
    Posts
    754
    Location
    Saline, Michigan
    Tractor
    Kubota L3700SU; Hustler Super-Z 66in

    Default Re: Hydraulic Snow Blower for FEL

    I don't remember the specific ratings of schedule 40 pipe and the cast fittings but I do know that it's used a lot in 3000 psi hydraulic systems. BTW the 3000 psi is the max pressure. The typical working pressuer is 1850.

    The pump is mounted under the front bumper right in front of the front axle's differential. It hangs down in front of the axle using a half-inch thick plate. This plate hangs vertically and the additional bearings mention later are connected to a horizontal leg that I welded to the plate. The pto shaft is under the axle as well. It connects to a cardigan-joint rated at 20hp. This sits between the pump and the stub shaft that is held by two pillow blocks. The pump is a bit low to the ground but it's protected by the big plate. I'd say it's about 6 inches above the ground. As long as we don't go off-roading, we'll be ok. Then again, that statement is true for my blower too, due to the kubota sub-frame.

    The double pillow block set up holds the business end of the pto shaft U-joint and the stub shaft. The pto shaft is about 48 inches long and connects to the mid-pto outlet under the driver. There is a third pillow block half way along the pto shaft to prevent any wobbling of the middle of the shaft. This means the shaft is held at both ends and in its middle.

    The pump is made by Prince and the motor by Cross. I'll get the model numbers... I think the displacements are about 2.25 for both pump and motor. We really didn't need much power the blower unit is only about 44 inches wide. I think it was designed for clearing sidewalks back in the early 1980's. The maximum pump RPM is 3000 but we designed everything to run at 2600 RPM max and 2000 typical.

    I forget how I picked the motor. I think I ran the design calculations from two directions and found an optimal mid point in the power needed vs. the power available. I picked a motor that could handle the 80/20 rule. As it turns out, this motor will handle far more power than this tractor can supply. If everthing were to come to a grinding halt, the tractor would stall before the motor or pump would reach their relative maximum pressures or torque loads.

    Regarding the size of the motor, the photo is fooling your eye. It's a typical size for handling about 20 hp; about the size of a softball. Oh and it's a gearmotor; so's the pump. We are only dealing with about 18 gallons per minute max so things are still small and gearmotors are great for that sort of size. The motor has an external atmospheric drain. Some motors have internal drains. This one allowed for either condition except for our setup. The motor literature said an external drain was necessary if running continuously near the high RPM limit. That's us, so I put one on.

    The pulley is a taper lock type that locks to an adapter that fits the bore of the pulley and motor shaft. I think we had to increase the bore size in the pulley to fit the adapter. I think we only needed a 1/16 or so. The pulley came with the blower, we bought the adapter. I

    ncidently, the blower was originally driven by a PTO shaft from a mowing tractor. Its was one of those tractors that looks like it's going backwards all the time. We use the same two drive belts and tensioner.

    The pump stays on the tractor during the winter. We use oversized quick disconnects from the trucking industry. They flow a little better especially on the suction side of the pump. The hydraulic system is a little small for my taste, but that's what we had available. The tank, hoses and components hold 5 gallons. I'm sure we get some foam built up in the top of the tank, but I think we are ok considering the amount of use it's getting (about two hours this season).

    I don't anticipate moving the hydraulics to the tractor. The owner has no other use for 20hp worth of hydraulics so it'll stay as is. We still need to add a relief valve though. Not having that bugs me a little. I figure the belts will slip before the unit builds 3000 psi. ...fingers crossed.
    Last edited by Pks; 02-14-2007 at 02:46 PM.
    -Peter

  6. #6
    Veteran Member BTDT's Avatar
    Join Date
    Sep 2006
    Posts
    2,209
    Location
    North Texas
    Tractor
    IH M Farmall-propane powered, H Farmall (father-in-laws), Ford 1300 diesel

    Default Re: Hydraulic Snow Blower for FEL

    Not having that bugs me a little. I figure the belts will slip before the unit builds 3000 psi. ...fingers crossed.

    Yeah, we can only hope. I have often wondered why the hydraulics weren't utilized, I guess because smaller tractors may have a pto but not hydr. setup. Pto powered would be cheaper initially also, I guess. Good luck and let us know how it works.
    Praise is not something you do to get closer to God, praise is a response to God being close to you.

  7. #7
    Platinum Member
    Join Date
    Apr 2000
    Posts
    754
    Location
    Saline, Michigan
    Tractor
    Kubota L3700SU; Hustler Super-Z 66in

    Default Re: Hydraulic Snow Blower for FEL

    Here are a few photos of the snow blower in action.
    Attached Images Attached Images
    -Peter

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.