Rear Wheels ?

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johnny j
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Rear Wheels ?

Postby johnny j » Sun Nov 29, 2015 10:28 am

Had Old Nellie on the ice,and only one wheel was spinning. Is that normal ?

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Re: Rear Wheels ?

Postby Barnyard » Sun Nov 29, 2015 10:32 am

Yes, only one wheel turns at a time. The side that looses traction will spin. if you are stuck you can apply the brake on the spinning side and hope the other side has traction to move the tractor.
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Re: Rear Wheels ?

Postby Scrivet » Sun Nov 29, 2015 12:06 pm

Lock up the spinning wheel and if the other wheel has good traction prepare to be launched at twice the speed. :shock: It's a differential thing, going straight forward both wheels spin at the same speed, making a corner the outside wheel spins faster than the inside wheel (think of a swinging gate, near the hinge doesn't move far but out by the latch it covers a lot of ground in a hurry), with one wheel locked everything (twice normal speed) goes to the wheel with traction.

Will also happen if the brakes don't apply at the same time driving on a slick surface. One wheel locks up, the other wheel speeds up.

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John *.?-!.* cub owner
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Re: Rear Wheels ?

Postby John *.?-!.* cub owner » Sun Nov 29, 2015 12:24 pm

Here is an old film by Chevrolet explaining the operation of a differential.
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Re: Rear Wheels ?

Postby Tractorboy3 » Sun Nov 29, 2015 12:50 pm

John *.?-!.* cub owner wrote:Here is an old film by Chevrolet explaining the operation of a differential.

very cool...Thanks for sharing that...
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Don McCombs
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Re: Rear Wheels ?

Postby Don McCombs » Sun Nov 29, 2015 2:36 pm

johnny j wrote:Had Old Nellie on the ice...

What ice, Johnny? :shock:
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Re: Rear Wheels ?

Postby Scrivet » Sun Nov 29, 2015 3:48 pm

I think Johnny should be in charge of reenacting the introduction of that video, only on Cubs, at the next Cub-arama. :D I volunteer to video it and dial 911. :lol:

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johnny j
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Re: Rear Wheels ?

Postby johnny j » Sun Nov 29, 2015 5:19 pm

Thanks for the Info. I got a call from my son in Colorado asking why only one rear wheel was spinning . And asked me if I knew why.
I told him it has happened to me as well in winters of the past. And I didn't know' but would ask the forum .Thanks again.

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Re: Rear Wheels ?

Postby eleedom » Sun Nov 29, 2015 6:58 pm

Johnny J, I did a LOT of snow plowing with a Cub as a teenager and before that with my Dad and can tell you that the side opposite the offset will always spin first unless you put more weight on it than the "heavy" side. But, if you feather the brake of the spinning wheel, you can get close to the same effect as a posi-trac rear end, meaning both wheels pulling at the same time. If you can get the traction, a Cub will push snow until the front end comes off the ground and you have to steer with the brakes.

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Don McCombs
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Re: Rear Wheels ?

Postby Don McCombs » Sun Nov 29, 2015 7:34 pm

Whew! Colorado. That makes sense. I thought you were talking about downstate MD and I was starting to get worried. :D
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schmibm
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Re: Rear Wheels ?

Postby schmibm » Sun Nov 29, 2015 10:04 pm

John *.?-!.* cub owner wrote:Here is an old film by Chevrolet explaining the operation of a differential.


Great video John!! Thanks for sharing!! Now if we just had one like that for cleaning old rusty gas tanks, there would be little to discuss on old tractor chat rooms.....
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