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Clicking while pedalling..

Old 06-21-09, 09:58 PM
  #1  
sleizure
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Clicking while pedalling..

Hello! I've got a Surly LHT with about 1000km's on it, and recently when I am pedalling on the left side, right when the pedal/crank arm is about "12 o'clock" I hear a click. This only happens when I have my foot on the pedal. I can reproduce when pedalling backwards. I can feel the click all the way up my leg.

I've tried to see if my bottom bracket is shifting, and nothing, so I'm stuck. Any advice?
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Old 06-21-09, 10:12 PM
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You many find the following links helpful in tracking it down:

https://sheldonbrown.com/creaks.html

AND

https://www.parktool.com/repair/readhowto.asp?id=123

It's usually just a matter of patiently removing, cleaning,
re-lubing, and re-torquing fasteners until it quiets down.
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Old 06-21-09, 11:09 PM
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I agree with neil0502's advice to clean, re-lube and te-torque all the fasteners on your bike. The source of the noise won't necessarily be near the crank. Pedalling stresses are transmitted throughout the frame. The thing that clicks may be far away from the bottom bracket. Then the click resonates through the whole frame, making it hard to localize the source.

I think this particular kind of pedaling related clicking often occurs in the seat tube, seat post, and saddle support mechanism. Pedaling produces small torsions on the seat tube, seat post and saddle support, first in one direction then in the other direction. An easy first thing to try is to clean and relubricate the seat post where it inserts into the seat tube. Also clean and relubricate all parts of the seat post quick release, including all places where the QR contacts the seat tube. There are other possible causes for your click, but this is the easiest one to fix, so try it first.

See also this thread where rankin116 is currently trying to diagnose a similar problem.
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Old 06-22-09, 10:45 PM
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Thanks for this and the above links. I will try to diagnose this tommorrow and report back in this thread what my findings were.
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Old 06-23-09, 08:29 AM
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Hi, I have a similar problem. I bought my bike used and it had no noise. I took it to the LBS for a tune up and the day after I rode it I started hearing a click or clinging noise.

It seem to happen when I'm riding it only. When I lift the bike and pedal with my hand, I don't hear any sound. Also the sounds seems to go away after 15 minutes of riding and/or when I change back gears.

any ideas?

TIA
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Old 06-23-09, 09:17 AM
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Originally Posted by peruchox View Post
Hi, I have a similar problem. I bought my bike used and it had no noise. I took it to the LBS for a tune up and the day after I rode it I started hearing a click or clinging noise.

It seem to happen when I'm riding it only. When I lift the bike and pedal with my hand, I don't hear any sound. Also the sounds seems to go away after 15 minutes of riding and/or when I change back gears.

any ideas?

TIA
Do what you can to localize the noise and figure out a way to make it happen by manipulating the bike with your hands. My experience is that bike shops can't deal with unknown noises very well because it just takes too much time to replicate and localize them.

Try turning the bike upside down so you can use both hands. Put the crank at all angles and (gently) use both hands on the pedals to generate slight twists in all directions. Also, line up the crank arm with the seat tube and (gently) squeeze the crank arm toward the seat tube. Do this with both crank arms, then do the same with the down tube.

If you figure out how to replicate the noise, take the bike back to the shop and they can probably figure out how to fix it. The fix will probably be to clean and lubricate one of the many fasteners on your bike. But occasionally it will be something else, like a crack in a component, something loose, or even something like a strap or a piece of clothing banging against your frame.
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Old 06-23-09, 09:53 AM
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Originally Posted by Platy View Post
But occasionally it will be something else, like a crack in a component, something loose, or even something like a strap or a piece of clothing banging against your frame.
And isn't that one just the worst -- when it turns out to be a cable crimp off the FD hitting the cranks or -- worse yet -- the tip of your shoelace (aglet) hitting the crank....

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Old 06-23-09, 09:56 AM
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Originally Posted by neil0502 View Post
And isn't that one just the worst -- when it turns out to be a cable crimp off the FD hitting the cranks or -- worse yet -- the tip of your shoelace (aglet) hitting the crank....
I've done both of those;
Disgusting how long it took to figure out the shoelace.
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Old 06-23-09, 09:59 AM
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Originally Posted by Shimagnolo View Post
I've done both of those;
Disgusting how long it took to figure out the shoelace.
For whatever reason, I suspect you figured out THAT one before I figured out the "multi-tool in the under-saddle pouch banging against the seatpost" thing
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Old 06-23-09, 10:02 AM
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Originally Posted by neil0502 View Post
And isn't that one just the worst -- when it turns out to be ... the tip of your shoelace (aglet) hitting the crank....

I'm afraid I'd go raving mad if a ticky noise started following me from one bike to another!

I had no idea those things at the tips of shoe laces had a name...aglet.
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Old 06-23-09, 10:04 AM
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If the problem is only apparent when you're pedaling, it could be the BB is loose and the bearings are shifting along the spindle or inside the cups. Same could be said for the pedal bearings as well. Your legs put a whole lot more torque on the BB than you can put with your hands, so it may be hard to replicate off the bike. Tightening the BB cups just a little more (after cleaning and re-lubing) will fix this.
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Old 06-23-09, 10:06 AM
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Originally Posted by Platy View Post
I had no idea those things at the tips of shoe laces had a name...aglet.
Of course they have a name - you think the guys that make them use the "little thing on the end of the shoelace-maker" machine? Or present a chart at the shareholder's meeting showing how many "plastic do-jobbers that make the ends of your shoelaces stay together" they made last year?
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Old 06-23-09, 10:11 AM
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It's nearly impossible to fault stausty's logic, there.
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