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Drive side pedal noise

Old 03-16-09, 07:51 PM
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DaJMasta
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Drive side pedal noise

An odd noise is coming from my drive side pedals/cranks. What's even stranger is that it has persisted, more or less, through changing everything (crankset, pedals, bottom bracket, chain, derailleur).


I'm wondering if this is something to be concerned with, doesn't sound too much like a rubbing noise and it's still very smooth, but more of a chain kind of noise (a series of clicks kind of thing), if that makes any sense.

It happens when I push down very hard (high gears climbing hills) with my right leg, I can give the left side equal pressure but it doesn't make this noise. The first few days after switching parts it was minimized, but it's very predictable and present now.... not a lot of noise, but clearly there.



Could it be something with the frame? I've actually got a new one sitting here but a week or so before I have the parts to build it up. I didn't notice any damage to the BB mount or surrounding area when I replaced the old BB, and went from a cheap sealed bearing BB to a Hollowtech II... so everything about that general area changed.
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Old 03-17-09, 04:58 PM
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Any guesses or things I could look into? Perhaps more importantly, does it seem bad? I haven't noticed it detracting from my riding in any way, but I know that making noise = inefficient transfer of energy somewhere.
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Old 03-17-09, 05:14 PM
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calyth
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So if I don't get it wrong, you're saying that the noise only appears when you put sufficient force on the right crank arm?

I'd suggest a more thorough noise debugging. I had a problem where I thought the noise only appeared when I was pedaling, but it turns out that it happened even when rolling. The hubs were adjusted too tight, and the seal may have needed some lubing.
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Old 03-17-09, 05:34 PM
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Did you properly grease and torque the Hollowtech BB? How long since you installed the crank? I'd say dry threads or insufficient torque could cause the noise you describe. If you do remove & reinstall the BB, you'll want to treat the splined threads on the left crank to some grease and properly tighten the crankbolts. Otherwise you could experience a similar annoying noise developing at the left crank.

Other possibilites could be the pedal threads or chainring bolts, but I suppose you'd likely notice the noise at the left crank, too, if the latter was the case.
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Old 03-17-09, 07:29 PM
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Yes, only a lot of force into the right crank arm. I've tested going up hills and coasting, in a variety of gears.... if the resistance is there then it makes the sound, if not, then it's silent (includes back pedaling, pedaling downhill, pedaling in lower gears)


I thought about BB tightness before, they are greased properly btw, but it was happening all the same with the former BB, a sealed kind with square taper cranks... There's a possibility that both have the same problem, but I find it unlikely.


The entire drivetrain is about 4 weeks old, maybe has 200-250 miles on it.
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