Join Date: Aug 2007
Location: Delaware, OH
Bikes: Giant OCR2, Puegeot Altitude 21 MTB
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Originally Posted by JMRobertson
Further info... one of the teeth in the middle gear is noticably bent in towards the smaller gear... probably a 15 degree bend. The chain will not go on this tooth, but rides on top of it. Is that normal?
I have had this same problem on my Giant OCR2 TWICE
, which uses this exact same FSA setup you describe. After the first time, it was replaced with a brand new middle ring of the same type. (Both times , I was in the middle of 200K brevet which made it a lot more interesting to finish with only two working rings...
The fact that it happened twice makes me believe that there is some kind of design problem with the setup in general. After the second time, I got my LBS to put on a Shimano crankset and rings, and they managed to get it warrantied through Giant. I have about 450 miles on this setup with no signs of trouble.
(Side Note: The new Shimano is 52-42-30, which seems to require a lot less shifting in the front rings then the original 50-39-30 setup did)