Bikeautonomy — bike parts & warning signs explained
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Grinding Noise While Pedalling

A rough, grinding sound that follows the pedal stroke.

What's happening

A gritty, grinding feeling or sound that happens once (or twice) per pedal revolution, rather than continuously.

Likely causes

  • Worn or dry bottom bracket bearings
  • Debris or grit stuck in the chain or derailleur
  • A worn pedal bearing

What to do

Keep riding gently, but get the bottom bracket and pedals checked soon — bearings that grind will keep wearing and eventually seize.

Heads up: Bikeautonomy is for general guidance only. If your bike is behaving oddly, get it inspected by a qualified bike mechanic.

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