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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 08-18-08, 09:09 AM   #1
Otto Rax
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crank rubs bb shell. whats up?

I got a new frame with a TA bottom bracket, and a buddy gave me a TA crank. the left side fits fine and has room to spare, but the drive side goes on and touches the bottom bracket, so if i tighten the arm on, it won't even turn. if i swap them (drive on left, non on right) everything fits great and lines up, but its all backwards. do i need to flip my axle or did i do somethign wrong?
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Old 08-18-08, 09:35 AM   #2
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It soundl ike you need to reverse the axle. I've seen a couple of bikes where the bottom bracket was installed "backwards" intentionally and by design to get proper clearance on both the drive and non-drive side with the chosen crank. The axle doesn't care which way it rotates so install it the way that works best.
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Old 08-18-08, 10:54 AM   #3
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Peter White says that TA changed their Carmina cranks in 2007 such that they now need a ~6mm longer axle. Check towards the bottom 1/3 of this page.
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