This is a repost from the Road Cycling forum... Today it happened again.. Steep uphill and I moved past everybody and attacked out of the saddle. I was getting into a great rythm... Then clank.. Ihe chain skips, puts my cadence and my thinking out of whack and I am in too high of a gear and I mash up feeling ever pedal stroke inch the biek forward... I could distinctly feel the cahin skip in the front chain rings.. Is this is a worn chain or crank issue... The whole bike has approx 700 miles on it...I was not cross chaining, I was in the 39-15.. Triple chainring with a 12-25 cassette..

BTW Here is another post a while back which I thought that my front chainring was worn but people pointed out that it was shifting reasons...

http://www.bikeforums.net/showthrea...neven+chainring


Thanks,
-AJ