R600 compact cranks on a Cannondale CAAD9. Started to hear a 'creaking' under loading of the left crank arm, maybe after the first 100km. Raised the issue with the guys at LBS - who suspected it was something else doing the creaking - pulled the post, stem, forks out and greased and re-fitted. Still creaking, so pulled the cranks out, re-greased and re-fitted - silent again.
LBS suspects the rear wheel, but I know that aint where the sound comes from. I take the wheel back to the wheelsmith for a chat. He demonstrates to me that it isn't the wheel.
After the next 100-ish-km, creaking returns. I ask them to upgrade the BB, although they assure me it's not the BB. They pull it down and replace the BB - silent again.
After the next 100-ish-km, creaking returns. LBS fingers the blame at the left crank arm, and returns to Shimano for warranty exchange. Fit new arm, silent again.
After the next 100-ish-km, creaking returns. I haven't bothered to take it back to the shop for another session, and I get the impression that they're tired of chasing the creak. Still, it's pissing me off as I wasn't expecting something like this from a brand new bike - and from such calabre as a Cannondale.
Anybody got any thoughts on this one??
LBS suspects the rear wheel, but I know that aint where the sound comes from. I take the wheel back to the wheelsmith for a chat. He demonstrates to me that it isn't the wheel.
After the next 100-ish-km, creaking returns. I ask them to upgrade the BB, although they assure me it's not the BB. They pull it down and replace the BB - silent again.
After the next 100-ish-km, creaking returns. LBS fingers the blame at the left crank arm, and returns to Shimano for warranty exchange. Fit new arm, silent again.
After the next 100-ish-km, creaking returns. I haven't bothered to take it back to the shop for another session, and I get the impression that they're tired of chasing the creak. Still, it's pissing me off as I wasn't expecting something like this from a brand new bike - and from such calabre as a Cannondale.
Anybody got any thoughts on this one??