Bicycle Mechanics - bike problems please help!!!
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09-25-07, 09:59 AM
my bike cranks are moving left to right when i peddle making the sprocket scrap the frame.and i tightened the sprocket but it still moves.what is wrong with it.
Sounds like one or both of the cups for the bottom bracket are loose.
09-25-07, 11:21 AM
think an upfrade to a sealed bearing cartridge unit is in order... they last that much longer and maintenance free too...
09-25-07, 11:27 AM
Tighten the "sprocket"? are you speaking of the crank arms? If so and the carnk arms are tight and the problem persists the only other area is the bottom bracket.
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