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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 02-01-09, 11:13 PM   #1
Coomer
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From Imperfect to Perfect Chainline = Lots of Noise?

I finally fixed my chainline on my Kilo TT today. It was 46mm or so on the front, but is now 42mm, which matches the rear chainline exactly. I also installed a new chain.

However, once I rode the bike, it made a TON of clacking sort of noise from the chain area. I double-checked all my measurements and my chainline should be perfect. I also lubed the chain liberally and it still makes tons of noise.

Do you guys think that riding on my cog and chainring with a bad chainline for about 1000 miles wore them down funny, so now it makes noise with a proper chainline? Or do you think it's a case of bent chainstays? Or something else?
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Old 02-01-09, 11:33 PM   #2
Wil
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I had the same issue when I too straightened out a chainline discrepancy: 45mm to 42mm. To remedy the situation I changed my chain and my cog, my cog was worn funny, actually it was just plain worn!

During the problem solving process I used a new chain on an old cog, and it made a ton of noise, the same clackity noise as yours. It's a very disturbing noise, and feeling. I kept the original chainring, and changed the cog, along with chain, with new ones and it rides quietly now. But at first it did make noise and felt a little bit crunchy, in the drivetrain. But over time the noise and crunchy drivetrain subsided.
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Old 02-01-09, 11:43 PM   #3
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you probably wore out the cog and/or chainring. its definitely noticeable when you install new drivetrain parts on older drivetrain parts. find out the problem, replace that particular worn part and that should make everything smooth and quiet.
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Old 02-01-09, 11:54 PM   #4
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oh wow, never thought of that. must be what i'm going through right now. we will see what happens as time goes on
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Old 02-02-09, 12:16 AM   #5
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Good stuff...thanks for the help guys. I'll change out components when I get home and see if it helps.
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Old 02-02-09, 09:55 PM   #6
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Thanks again for the help. Just put the bike back together with a new cog and that fixed the problem and quieted it down completely.
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