Noise on each pedal stroke?
07-12-07, 10:12 AM
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Noise on each pedal stroke?
That's what I'm hearing...a noise on each pedal stroke. Kinda of a clunk, but not too loud.
I've verified crank arms are tight. Nothing seems to be hitting. I can't reproduced it unless I'm riding the bike...it doesn't seem to happen that I can tell if I put bike on rack and spin pedals.
Any ideas?
I've verified crank arms are tight. Nothing seems to be hitting. I can't reproduced it unless I'm riding the bike...it doesn't seem to happen that I can tell if I put bike on rack and spin pedals.
Any ideas?
07-12-07, 10:33 AM
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Does it only happen under pressure? What I mean is, if you are sitting on the bike, but peadling without much force) does it still clunk? Also, does it happen once per pedal rotation? I remember reading a Sheldon Brown article on how many noises that only happen when we're on the bike can be something unrelated to the mechanics of the bike... For example, are you sure a part of your shoe isn't rubbing on the frame or crank arm somewhere? Are you sure your leg isn't hitting the tool pouch under your seat? I know these all seem like obvious things, but sometimes it's just that simple...
07-12-07, 10:48 AM
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Originally Posted by trich
Does it only happen under pressure? What I mean is, if you are sitting on the bike, but peadling without much force) does it still clunk? Also, does it happen once per pedal rotation? I remember reading a Sheldon Brown article on how many noises that only happen when we're on the bike can be something unrelated to the mechanics of the bike... For example, are you sure a part of your shoe isn't rubbing on the frame or crank arm somewhere? Are you sure your leg isn't hitting the tool pouch under your seat? I know these all seem like obvious things, but sometimes it's just that simple...
I'm pretty sure I'm not hitting anything with my shoe/leg. I can almost feel it when it happens (yes, every pedal stroke). It kinda "feels" like there's play in the crank arm, but I can't detect any play....that's just the kind of "feel" it has.
07-12-07, 10:55 AM
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Check your seat/seatpost for bolt tightness. I can't believe how often I track down noises to the seat.
07-12-07, 11:54 AM
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Originally Posted by db122
Check your seat/seatpost for bolt tightness. I can't believe how often I track down noises to the seat.
07-12-07, 12:09 PM
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I just had the same problem. It sounded like the seat was squeaking. I checked that. I replaced the chain-ring bolts after one broke while I was seeing if they were tight -- later discovering that they should only get about 7 ft-lbs 
After none of that worked I swapped pedals and the sound is gone.
After none of that worked I swapped pedals and the sound is gone.
07-12-07, 12:19 PM
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that happened to my eggbeater pedals when they needed rebuilding. It was most obvious when standing during hill climbs
07-12-07, 04:57 PM
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I just dealt with a similar problem myself - turned out the pedals weren't torqued sufficiently into the crank arms. When I put a wrench to them the sound disappeared. Almost missed this very easy fix because when I checked the pedals by hand there was no play.
