Bicycle Mechanics - CF frame flexing?

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Turd Ferguson

05-04-08, 06:34 PM

Lately I've been hearing creaking sounds from the crank area of my Carbon fiber Argon Krypton. I just replaced the Truvativ crank with a Ultegra so I don't believe it to be a crank problem but perhaps just the sound of the frame when under strain from aggressive pedaling? Could it be a bearing issue?

This sound has been apparent with both cranks.

thanks
Jaret

carpediemracing

05-04-08, 06:53 PM

Sounds like the last change you made was with the cranks. You don't mention crashing, unusually severe chain drops, etc. Since something changed (you didn't have a creak and now you do), I'd look at any recent changes. In other words, I'd double check the crank installation.

cdr

Deanster04

05-07-08, 11:07 PM

Have an expert check the frame to see if you are getting too much flex...cranks not withstanding.