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Old 25-09-2019, 09:28 PM   #10
utopia
No turn left unstoned
 
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Join Date: Jun 2010
Location: leicester
Bike: M750
Posts: 4,545
Quote:
Originally Posted by jerry View Post
.....I have a case saver on my M750 and the 15t never seems t mark it.
Do you know the manufacturer of your casesaver, Jerry ?

I would much rather stick with 15/39 if I can get a casesaver in there with enough clearance.

Also, it turns out that 15/39 with a 98 link chain is an ideal combo for evening out wear in the final drive ... it takes 15 full chain rotations before a tooth on the front sprocket returns to a link with which it has previously engaged ....and 39 full chain rotations in the case of a tooth on the rear sprocket.
See here for a calculator ...https://www.blocklayer.com/chain-sprocket.aspx

The 14t front sprocket fares much worse in those stakes.
Fortunately I think the 98 link chain will do for either set-up, so I can still switch back to the 15t if I can solve the casesaver issue.
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