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Problem front brake thump

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Old 04-15-08, 08:34 AM
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Muscle bike design spec
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Problem front brake thump

Hi,

I just finished a cross bike build last week and a problem cropped up on the front wheel/brake. It has a CF front fork with cantilever mounts and Tektra mini-V brakes. After 12 or so miles the brake/wheel developed a hard thump at every revolution. I adjusted the spokes last night and the wheel spins very freely and true. There are no bulges in the tire and the brake pads are aligned with the wheel rim.

Is there anything I should check? Thanks.
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Old 04-15-08, 08:52 AM
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Check the join seam of the rim. May not be smooth. Might need some work with file or emory cloth to smooth up.
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Old 04-15-08, 09:11 AM
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Originally Posted by jsharr
Check the join seam of the rim. May not be smooth. Might need some work with file or emory cloth to smooth up.
I've had the wheel on another bike for a while (different tire) without an issue. I ran my finger around the rim and didn't detect a rough seam.

I did find one bolt was slightly loose and tightened that. I'll see if that makes a difference when I head out at lunch.
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