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Old 11-17-05, 12:51 PM   #1
cog_nate 
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Odd vibrations while pedaling -- bottom bracket?

I've got a mid-80s (?) Japanese-made Bianchi Grizzly that I commute and tool around on. Lately, when I put some force into pedaling -- not mashing, but maybe 1/2 to 2/3 max effort on the pedal -- I feel an odd vibration. There doesn't seem to be any noise, but the vibrations are really quite irritating when I pedal. Is it the bottom bracket? I don't know what else could cause such weird vibes (except absinthe, maybe).

Thanks.
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Old 11-17-05, 12:56 PM   #2
sydney
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Well, have you checked to see if anything is loose?
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Old 11-17-05, 05:23 PM   #3
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I had a similar problem, thought it was a bad freewheel, turned out the chain was worn, new chain, problem went away. Check to if there is play in the bottom bracket or rear hub.
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