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pedaling too fast? causes...

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Old 09-07-07, 04:34 PM
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CarLo
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pedaling too fast? causes...

When I pedal too fast, I hear a clunk and my footing on the pedals make my feet slip. Has anyone experience that? Can I get any tips on how to prevent this from happening?
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Old 09-07-07, 04:39 PM
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Originally Posted by CarLo View Post
When I pedal too fast, I hear a clunk and my footing on the pedals make my feet slip. Has anyone experience that? Can I get any tips on how to prevent this from happening?
Can you be more specific? Is the clunking from the cogs or front plates? Its possible your chain is skipping cogs at the rear and the likely culprits are a stretched cable or deraileur adjustment. I've only seen this happen when my bikes were new and the cables stretched out misaligning the derailleurs.
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Old 09-07-07, 07:14 PM
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yeah, my bike is new. maybe i just need to break it in or something.
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Old 09-07-07, 07:19 PM
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There's really no "break in" of a bike.

It may "wear-in", meaning it will require some maintenance and adjustment after a ride. Break in seems to imply that a problem will go away with use - which is never the case with a bike - at least not that I can think of.
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Old 09-07-07, 08:07 PM
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Originally Posted by JeffS View Post
There's really no "break in" of a bike.

It may "wear-in", meaning it will require some maintenance and adjustment after a ride. Break in seems to imply that a problem will go away with use - which is never the case with a bike - at least not that I can think of.
it has something to do with the gearing. I'll probably bring it to the bike shop and see if they can tune it once more.
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Old 09-07-07, 10:32 PM
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You're inadvertently shifting (or slipping the chain) when pedaling hard. Take it to your LBS to get the derailler/cables adjusted.
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Old 09-07-07, 10:47 PM
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Is it when you're pedalling fast, or pedalling hard? If you're pedalling fast and not completely smoothly, you might induce some slack at the top of the chain that'll make a clunk when you take it up.
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Old 09-08-07, 09:07 AM
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I had a problem like this due to a cheap deraileur. It's the chain slipping due to the cheap deraileur. See if that is the problem.
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Old 09-08-07, 11:30 AM
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Originally Posted by HybridSoThere View Post
If you're pedalling fast and not completely smoothly, you might induce some slack at the top of the chain that'll make a clunk when you take it up.
That's what it sounds like to me. Probably just not so perfect pedaling form.

Does the "clunk" happen on every pedal stroke?
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Old 09-10-07, 10:39 PM
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It wouldn't be coming from the BB would it? I find that no shop puts enough grease in the bearings. Even on a brand new bike I take the BB apart and regrease it. That way I know that there's enough.
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