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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 03-26-07, 07:01 PM   #1
orizzonte
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weight shift from out of saddle pedaling causes disk brakes to rub pads

when out of the saddle and bringing the bike side to side i hear the gentle whisper of a pad rubbing. it should be happening front and back.
bringing my pads out creates alot of brake lever play. does everyone with disks put up with alot of play? i don't see how spoke tension would help b/c the disk is connected to the hub.

wheels - mavic crosslink
brakes - 8 inch avid somethings, good ones, mechanical

any solutions? i'm sure this has happened to many.
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Old 03-26-07, 08:45 PM   #2
sch
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No bike is completely rigid. Standing to increase torque will move the BB
back and forth a bit, distorting the frame and could be one possible
cause of the disc rub. It certainly flexes the chainrings. Borderline
spoke tension could result in wheel flex and disc rub as a
consequence. The only fixable thing is spoke tension-best checked with
a tensiometer for this purpose rather than guessed at.
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Old 03-26-07, 10:31 PM   #3
shakeNbake
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If your hub uses loose bearing, make sure they have no play.
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Old 04-03-07, 06:18 PM   #4
orizzonte
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i'm cool with a little rubbing now, i tuned and straitened what i could and it is slightly less now. thanks at you for your time!
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