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Pedals spin wheel doesn't turn

I'm having a problem with the pedals spinning feely without the wheel turning after i coast or have stopped pedaling for a few seconds. i had the bottom bracket replaced a week ago but don't know if its related.

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Bottom brackets just connect the cranks to the bike and keep the drivetrain aligned while you wail on the pedals.

I assume you mean the rear wheel spins freely when you pedal after a coast or stop. That would be the pawls in the rear cassette, freewheel or axle failing to engage. When you coast, the whirring, clicking sound you would hear is the pawls gliding over the detents. When you apply forward torque, they drop into the detents and provide drive. Like a ratchet.

Have a shop look at it. Don't ride the bike if it's going to do that. You may stand up and stomp on the pedals and have it let go and wake up with a broken jaw because you went over the handlebars, if you survive being run over. The rear wheel and drive components are not beginner bike mechanics.

You don't say what kind of drive it is.

Posted on Feb 05, 2010

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