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Old 01-19-12 | 06:09 AM
  #13  
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Push
Zeusmeatball
 
Joined: Jun 2009
Posts: 259
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From: CT

Bikes: 1976 Motobecane Nomade Sprint, 1988 Specialized Rockhopper comp, 1991 Schwinn Crisscross, 2009 K2 Zed 3.2, 2011 Trek X-Caliber Gary Fisher collection

6'4'' and currently **cough** 360 pounds myself (I cough because I was down to 305 not so long ago ) and I have to agree that its very likely a stretched chain though a RD adjustment can also be the culprit (I have had both issues on my K2 mountain bike) I would try adjusting the RD and if that does not work then look into the chain.

You mentioned upgrading to X7, does the bike have SRAM components (shifters/RD) on it now? if its Shimano (and I am not 100% on this but am pretty sure) you may need to stick with a Shimano RD if you have Shimano shifters/RD now.

on the Wahoo, I rode one over the summer (ended up buying the Xcal) and it should be fine.. though don't hold me to that
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