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)