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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 10-09-08, 05:33 PM   #1
durty
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chainring hits frame

I just got a new BB for an old frame, screwed it in and put the cranks on. But when I screwed the bolts in to the square tapers to keep the cranks on and the chainring was stuck up against the frame. What's can I do about that?
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Old 10-09-08, 05:36 PM   #2
Ex Pres
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You need a bottom bracket with a longer spindle, probably 8mm or so longer. What BB did you buy and what crank do you have?
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Old 10-09-08, 07:07 PM   #3
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Quote:
Originally Posted by durty View Post
I just got a new BB for an old frame, screwed it in and put the cranks on. But when I screwed the bolts in to the square tapers to keep the cranks on and the chainring was stuck up against the frame. What's can I do about that?
-durty
You can buy the proper length bb, which is very likely longer than what you currently have.
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Old 10-09-08, 07:27 PM   #4
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be aware that a lot of older cranksets use asymmetrical BB spindles with the longer end on the right. Make sure the new one you get matches the one you took off.
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