Fsa transmission creak
I've had FSA Gossamer Mega EX0 cranks and bb cups on my bike since new (2 years). They've ran perfectly until recently when they've started making the most horrible creaking and clicking. These FSA cranks are similar in design to Shimano Hollowtech 2 i.e. the left crank is removable, and has 2 opposing pinch bolts. The axle is permanently fixed to the right crank.
The creaking and clicking only occurs on the left crank power stroke. Single leg pedalling on the right crank does not produce any noise at all. I'm virtually certain it's coming from the bottom bracket area. It's not the saddle as it occurs standing or seated. I've eliminated the pedals and cleats, and the chainring bolts are tight. If I hold the brakes on and lean against something I can get the left crank to creak and click while stationary.
I've removed, greased and retightened the left crank a few times with no success. Anyone got any ideas as it's driving me nuts. Ironically I've got another bike with Tiagra Hollowtech 2 cranks and that has the same problem only not as bad. I'm beginning to think that external bearings are a poor design.
The creaking and clicking only occurs on the left crank power stroke. Single leg pedalling on the right crank does not produce any noise at all. I'm virtually certain it's coming from the bottom bracket area. It's not the saddle as it occurs standing or seated. I've eliminated the pedals and cleats, and the chainring bolts are tight. If I hold the brakes on and lean against something I can get the left crank to creak and click while stationary.
I've removed, greased and retightened the left crank a few times with no success. Anyone got any ideas as it's driving me nuts. Ironically I've got another bike with Tiagra Hollowtech 2 cranks and that has the same problem only not as bad. I'm beginning to think that external bearings are a poor design.
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Also worth checking the headset crown race is dry and well greased as this can give similar symptoms.
And finally I have had experiences of a worn chain causing the creaking.
Hope that helps.
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Ritchey Breakaway Steel Cross
Specialized Singlecross Fixed 46:16