Thread: Trek 7.2 FX (22.5') w/250 lbs rider
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Old 05-02-07 | 09:42 AM
  #17  
ang1sgt
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Joined: Apr 2007
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From: Chili, NY

Bikes: 88 Fisher Gemini tandem, 92 Trek 970, 07 Nashbar Frame, 08 Gary Fisher Paragon

Originally Posted by Joker021971
Okay...gotta ask...what's a dork disk?
More than likely it's the Spoke Protector on the Back Wheel. They are notorious for breaking a tab or two in short order and then spinning behind the cassette.

Chris
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