Hydraulic chute rotator for a B2772 snowblower

jasonf · Feb 24, 2002

No, the unit has 1467 In/Lb of torque and even with alot of Ice/Snow on the chute it does not even begin to tax the motor. The only thing that I have to look out for is breaking the shear pin that I put into the adapter that connects the motor to the worm gear. When I run the chute up against the stops at the end of its rotation the motor is so powerful that it breaks the shear pin. In the spring I what to modify the ring gear that is welded to the base of the chute. To stop the chute from rotating too far left or right the gear ring on the base does not have teeth all the way around the base. It is made so that there is 1 tooth that is not cut into the ring gear, this makes the worm gear stop up against the spot where the tooth is not machined into the base gear. I have run into situations where I need to have the chute rotate so that it is blowing snow at the cab so that you could clear out a walkway that has buildings on both the left, right and ahead. Sort of like snow blowing into a U and needing to blow the snow back over the cab so you could clear it out. This would also allow me to aim the snow a little more than the present 180 degree range on the right and left sides. It looks like all I have to do is cut/grind 1 more tooth into this round base ring gear. I also suggest taking the chute off and drill/tap a hole for some grease fittings. In my pictures you can see that I have added 2 of these. This makes it easy to grease the base of the chute without having to disassemble the whole thing each year.

jasonf · Feb 24, 2002

So today was a beautiful day in Saratoga NY, and I wanted to make a change to the chute rotator that I built. I wanted to remove the stops that limit the rotation of the chute. As you can see in the attached photo I cut a tooth into the stop and it works great. This will really help when I have to clear a path in the backyard while not blowing the snow onto the pool cover......

markcg2000 · Feb 24, 2002

Excellent work. Funny how so often the manufacturers try to protect us from ourselves. Probably are afraid someone's going to point the chute straight at themselves, then catch a rock.../w3tcompact/icons/shocked.gif. I often find myself needing to rotate the chute so the snow is actually blowing in front of me ( mine's a 3PH, so I'm driving backwards) when the wind is blowing wrong.

hayden · Feb 25, 2002

I read your analysis of the torque requirements etc AFTER I posted my question. I see you did great homework too! An inspiring job!

jasonf · Feb 25, 2002

My wife gives me 'the look' when I come through the door with the snowblower chute in my hands on my way down to the basement for a little tweeking. Since even she gets that glazed look when I talk about the tractor, I had to post my works here. I just knew that there are people like me on this board, and I am proud to be part of it !!!! Thanks for the feedback and advise from others during this project.

MarkV · Feb 25, 2002

<font color=blue>"she gets that glazed look when I talk about the tractor"</font color=blue>

You too!!/w3tcompact/icons/eyes.gif Jason, we don't even get snow down here in Georgia and I enjoyed your post. My wife just doesn't get it./w3tcompact/icons/laugh.gif

MarkV