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Old 10-05-15, 07:10 AM
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well biked
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If you're getting brake rub when you're pedaling hard (out of the saddle for example), what's likely happening is the fork is flexing. The ends of the fork are moving enough due to the flexing/twisting of the fork that the caliper is being moved into the brake rotor as you pedal. I've seen this many times, particularly on bikes with a rigid fork equipped with disc brakes.....hybrids with a suspension fork and disc brakes are also prone to this, because the suspension forks that are on hybrids are typically fairly flexy forks.

Last edited by well biked; 10-05-15 at 08:08 AM.
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