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Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

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front sprocket, spec, tourque

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  #11  
Old 14th August 2022
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Quote:
Originally Posted by doodah man View Post
I also agree on the 35-65 ft/lb figure for the transmission output sprocket (rear drive) and 100-120 ft/lb on the engine sprocket - front drive inside the primary.
It is a common error, especially for newer members here and elsewhere, to confuse these two "sprocket" names. About a decade or so ago it was discussed thoroughly because I made the same error...

transmission output sprocket vs engine sprocket: very different parts
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  #12  
Old 15th August 2022
Hardtail28 Hardtail28 is offline
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Okay sorry.. left side (clutch hub nut and the sprocket to the left of it which I am calling the "compensating sprocket ", I was initially told 150-160. I put it on with an older "ingersoll rand " 1/2 inch. Drive pneumatic wrench. It's tight... somewhere between 120-150, I would say. That's (both) of the nuts in the primary case. The( right) side sprocket (the one that spins the chain (23 teeth) that spins the rear (wheel sprocket) 58 teeth, is the one I'm asking about.. the vote is 35-65 lbs., I guess?
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  #13  
Old 15th August 2022
Hardtail28 Hardtail28 is offline
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Okay sorry.. left side (clutch hub nut and the sprocket to the left of it which I am calling the "compensating sprocket ", I was initially told 150-160. I put it on with an older "ingersoll rand " 1/2 inch. Drive pneumatic wrench. It's tight... somewhere between 120-150, I would say. That's (both) of the nuts in the primary case. The( right) side sprocket (the one that spins the chain (23 teeth) that spins the rear (wheel sprocket) 58 teeth, is the one I'm asking about.. the vote is 35-65 lbs., I guess? By the way... thank you sooooo much!!! I would have probably done some damage. I hadn't remembered putting so much tourque on it before.. but I also didn't want a broke-loose chain tickling my leg on the highway! Again.. AND WITH ALL SENSARITY, THANK YOU GUYS. THAT VERY WELL COULD HAVE BEEN A LEG!
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  #14  
Old 15th August 2022
doodah man doodah man is offline
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You’re welcome! Enjoy your legs lol!!
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  #15  
Old 15th August 2022
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if you don't a a large obvious spring assembly on your motor sprocket shaft,you don't have a ''compensating sprocket''.yes or no?? the factory last used them in early '76.
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Last edited by brucstoudt; 15th August 2022 at 22:38..
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