Can anybody identify this JS pulley

the-big-e

the-big-e

Registered User
I don't remember how I came into possession of this jack shaft pulley.....

Does anybody know what the percentage number is for this jack shaft pulley....

I think it's a Spinning Wheels part, but I could be wrong.....

Part # SW-1050
 

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I don't have any pullies to help identify, but do have an idea. Measure the pulley and compare with a known stock one?

-Melon
 
I don't know what that one is but I have a SW-1100 that I found out from searching is a 5%. I don't remember who made it.
 

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I have one on my car.

I was told the 1100 was the 10 percent and the 1050 was the 5 percent. You could find out by calling or emailing Victor. The SW is for Spinning Wheels and Victor had someone make them for him. Hope I wasn't told wrong.
 
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Can you post some dimensions so I can compare them to mine.....
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Measured inside the groove, 3.66" and 5.09". I'm not claiming these to be exact, I ran a piece of yarn around the groove and calculated from the circumference.:p
 
I found a stock one to compare mine to and I think 90MN12 is correct because mine looks to be a 10%. If yours turns out to be a 5% would you be interested in trading?
 
Let me get a piece of string and see what I have...
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String would be an upgrade from what I used, I gave up on that method and just wrapped a tape measure around it.:rolleyes:
 
Mine measured 12.12 dia. and 15.62 dia. using my calibrated piece of string.....

Victor just got back to me and said that it was a 5%.....
 
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