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weird noise

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Old 10-18-10 | 03:02 PM
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weird noise

hey so i have campy chorus group on my bike. lately its been making a weird kind of grinding noise when i put pressure on the pedals. is this normal?
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Old 10-18-10 | 03:04 PM
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no noise is normal except rolling tires on the road make a sound. need more specifics about your noise. Do you need to lube your chain?
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Old 10-18-10 | 03:05 PM
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i've tried lubing the chain, but is there anything else i should do to the chian?
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Old 10-18-10 | 03:09 PM
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Where's the noise coming from?
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Old 10-18-10 | 03:27 PM
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i think either the chain or the bb
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Old 10-18-10 | 03:29 PM
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Does it sound like dirt in your chain?
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Old 10-18-10 | 03:29 PM
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i guess i'll try givin it a real good clean and see if it helps at all
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Old 10-18-10 | 03:51 PM
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Good luck finding the noise. You may lose your sanity before you find it.
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Old 10-18-10 | 03:54 PM
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Did you modify the contents of your saddle bag? Is your seat post binder bolt tight? you gotta do a better job describing the noise.
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Old 10-18-10 | 05:43 PM
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Does the noise occur at a particular point in your pedal revolution, regardless of what gear you're in? If so, then it's your BB. Or maybe a pedal, but more likely the BB.
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Old 10-18-10 | 06:58 PM
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I've had grinding noises from my Chorus 11 rear derailleur. In mine, it has been caused by the upper pulley being too close to the cassette. It only happens in the lowest gears (biggest cogs). There is an adjusting screw that will increase or decrease the distance between the pulley and cassette.

But, your noise could be caused by something else. For instance, there could be grit in the seat tube. That noise is more squeaky/clicky than grinding, but it's a possibility since you hear it while you're sitting and pedaling. You can eliminate the seat tube/seatpost possibility by standing and pedaling. If the noise goes away, you've found the culprit.
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Old 10-18-10 | 07:12 PM
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Originally Posted by sdold
Does it sound like dirt in your chain?
Good call on that. I've beeen experiencing some gritty noise that started after a couple of rain rides. I just sort of assumed it was crap that worked it's way into my bottom bracket. But now I'm thinking it's a sandy, gritty chain that I'll clean this weekend. thanks for that obvious reminder that I should have already considered!
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Old 10-18-10 | 07:14 PM
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Originally Posted by coasting
Good luck finding the noise. You may lose your sanity before you find it.

Yep, sometimes it is better to just turn up the iPod than try to find the source.
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Old 10-18-10 | 08:31 PM
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Originally Posted by king-tony
Yep, sometimes it is better to just turn up the iPod than try to find the source.
I had a nagging BB problem about a year ago that was only solvable by cranking up the iPod.
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Old 10-18-10 | 09:48 PM
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How long have you been riding the current set-up ? Maybe the rear derailleur is a bit out of adjustment.
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