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Tractor Talk Discussion Forum

Belt pulleys

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Super 55 in Ind

02-05-2008 09:41:08




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I am kind of new to the tractor thing and was wondering about belt pulleys. Specifically, why or what is the advantage to making it out of pressed paper versus steel? I know they were made both ways, I was just wondering about the paper ones, as paper doesn't sound very durable. Was it done for belt traction or possibly to cut down on static electricity? Thanks.




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Nebraska Cowman

02-05-2008 16:36:01




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 Re: Belt pulleys in reply to Super 55 in Indiana, 02-05-2008 09:41:08  
It's for belt traction. A smooth steel pulley will throw the belt on a hard pull quicker than you can sat scat. Now when I was a kid we had an Allis Chalmers silage blower that had a steel pulley that was heavily crosshatched. It would hold the belt pretty well. Another thing you will notice is the pulleys will be slightly larger at the center. This called the crown and helps keep the belt on. A flat pulley would have to be aligned perfectly to keep the belt from running off and the crown allows for a slight error.

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SMinWi

02-05-2008 16:11:23




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 Re: Belt pulleys in reply to Super 55 in Indiana, 02-05-2008 09:41:08  

The advantage was lighter weight. Paper pulleys are durable as long as they don't get wet for to long.



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glennster

02-05-2008 12:03:23




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 Re: Belt pulleys in reply to Super 55 in Indiana, 02-05-2008 09:41:08  
we ran both , didnt seem to matter, both pulley types ran good. maybe the paper was a little easier on the leather belts. either type you had to ground the tractor when doing belt work, the static charge would really wake you up. used to just lay a chain over the drawbar so it would touch the ground. our old elevator was belt drive, without the chain, the tractor would knock you on yer butt!!!!



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Goose

02-05-2008 11:48:21




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 Re: Belt pulleys in reply to Super 55 in Indiana, 02-05-2008 09:41:08  
I think the one's you are referring to are known as "rockwood" pulleys. I wasn't aware they were made of pressed paper.

Beyond that, I can't say. I've used both rockwood and steel pulleys with equal results and never gave it a thought.



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big jt

02-05-2008 11:58:10




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 Re: Belt pulleys in reply to Goose, 02-05-2008 11:48:21  
The Rockwood pulleys are made of laminated paper. Paper Pulleys reman them in the same fashion as when they were new.

jt



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Ole B

03-18-2008 11:47:52




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 Re: Belt pulleys in reply to big jt, 02-05-2008 11:58:10  
I have a "paper pulley" on an IH W-4, that's in good condition, and one on a Fordson N, that has swollen and fallen aparts. What kind of paper did they use? Did they glue the sheets together or impregnate the pulley after finishing?



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