I recently purchased a used Ultegra groupo and installed it on a bike I was building up. Took it out for an inaugural 32-mile ride with no issues whatsoever. Took it out for a shorter ride due to time constraints a week later and noticed an odd "click" type of sound that didn't seem to occur at the exact same spot in the crank rotation, but did occur each rotation nonetheless - but only when under power. In other words, if I was pedaling, but not really exerting much if any force the noise would disappear. Start pedaling harder and it would reappear.
The BB is brand new, nothing is making contact with the frame itself, etc., and so worn chainrings and/or chain would *seem* to be the culprit to me. The noise definitely doesn't come from the cassette.
Would you all agree that it would seem to be worn chainrings and/or chain? Is it wise to replace both at the same time, or should I just try one at a time?
The BB is brand new, nothing is making contact with the frame itself, etc., and so worn chainrings and/or chain would *seem* to be the culprit to me. The noise definitely doesn't come from the cassette.
Would you all agree that it would seem to be worn chainrings and/or chain? Is it wise to replace both at the same time, or should I just try one at a time?