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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 03-22-09, 02:24 PM   #1
bykemike 
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a rear cluster FYI

For weeks now I have had a skip in two gears on my five speed rear cluster (vintage ride) when I was on the middle cog or the smallest cog it would skip or jump when I applied pressure to the peddles.

I examined the cogs closely and could find not one thing wrong, nothing worn or broken and I assumed it was a bent RD but a friend of mine had a NOS rear cluster so I put it on yesterday and rode 50 miles today and it is like a new bike..easy to shift and no skip at all.
I can"t explain it but I guess it can happen.

Mike
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Old 03-22-09, 02:41 PM   #2
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I'll guess the skipping started right after you installed a new chain.

Used cogs can skip with a new chain even if they have no visable wear. By the time the cogs are noticably hooked or deformed they are way beyond hopeless.

BTW, some older 5-speed freewheels had cogs that could be flipped over on the ratcheting body and that presented a new, unworn face to a new chian. You could get double the use from them.
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Old 03-22-09, 03:48 PM   #3
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When replacing a freewheel/cassette, you should also replace the chain. An old chain will cause premature wear to the new cluster. If it works at all that is.
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