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Creak with pedal stroke

Old 09-07-12, 11:43 AM
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roundout
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Creak with pedal stroke

My Italian Marin with 9 speed Veloce has developed a creak which occurs with each pedal stroke, but only when in the big ring in front. It occurs any time I put a decent amount of power on the crank, and sometimes when under a lighter stroke, too. It absolutely, under any condition, never comes up when I'm in the small ring up front.

I'm baffled.

I've looked at the FD and it doesn't appear to be rubbing the chain. Cranks seem to be tight. I unclipped both feet in sequence to rule out a noisy pedal with no success - it's certainly on the bicycle. Everything else appears to be tight and well lubricated. The bike has a few other creaks from the saddle, brifters and stem which I've lived with ever since I've had it - this one is most certainly new and has only come up in the last 100ish miles. No maintenance which might have been erroneously performed has been done recently.

Any advice is appreciated.
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Old 09-07-12, 11:48 AM
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demoncyclist
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Could be the cleats on your pedals, could be the pedal/crank interface, crank/bb spindle or (most likely IMHO) the bb cups. Removing them and wrapping a layer of teflon tape before reinsertion usually does the trick.
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Old 09-07-12, 12:33 PM
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Or the rail and the socket in the saddle shell.. moving..
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Old 09-07-12, 02:19 PM
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My chainring was creaking. It went away after I greased and torqued the bolts to spec.
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Old 09-08-12, 07:51 AM
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check your front derailleur adjustment. perhaps the bb shell/crank is flexing and slightly rubbing on the derailleur cage when you mash down.
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Old 09-08-12, 01:36 PM
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puchfinnland
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I bet it is the interface between the big wheel and the spider- the chainwheel is most likely flexing

open everything up and re torque the chainwheel bolts.

all these sugestions are good.

the best way to solve this is process of elimination.

swap parts untill the noise goes away-then you can figure it out
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Old 10-26-12, 09:05 AM
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roundout
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Originally Posted by puchfinnland View Post
I bet it is the interface between the big wheel and the spider- the chainwheel is most likely flexing

open everything up and re torque the chainwheel bolts.

all these sugestions are good.

the best way to solve this is process of elimination.

swap parts untill the noise goes away-then you can figure it out
You win. Problem solved. Thanks!
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