Thread: Knocking/tapping from back wheel. Advice please.
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Old 11-15-04 | 11:38 AM
  #22  
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noisebeam
Arizona Dessert
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Joined: Jun 2004
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From: AZ

Bikes: Cannondale SuperSix, Lemond Poprad. Retired: Jamis Sputnik, Centurion LeMans Fixed, Diamond Back ascent ex

Update on the knocking I had. The LBS was puzzled too - checked spokes, hubs, etc. Eventually they found it was the tube valve tapping on the rim with every revolution - thats why it only occured under load. A valve nut cured the problem.

Al
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