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Noise coming from crank or general pedal area?

Old 09-13-11, 01:34 AM
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Kinkikowboi
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Noise coming from crank or general pedal area?

Hi, I'm quite new to fixing bikes so layman terms would be appreciated, or use words that I can google so I can understand for later use please =]

So here's my problem. When I'm just strolling with the bike (fixed gear), there's no noise coming from the (crank?) but when I'm riding and actually applying pressure down on the pedals, there is a continuous noise coming from that area. I'm sure it's not the pedals so thats definitely out of the question. I just bought som Bel-Ray grease just in case I need to use it. If you need anymore information, let me know! Like I said, I'm still quite new at this so be easy on me =] Thanks!
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Old 09-13-11, 02:21 AM
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Your crank bolt may be loose, at worse it could be the bottom bearings.
Try a quick tightening, it should either be a 14mm nut or a 8mm hex bolt.
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Old 09-13-11, 09:15 AM
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Originally Posted by HupJai View Post
Your crank bolt may be loose, at worse it could be the bottom bearings.
Try a quick tightening, it should either be a 14mm nut or a 8mm hex bolt.
Thanks for replying! I don't need to take anything apart if it's just the crank right? As for the BB, would I need to take it apart?
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Old 09-13-11, 10:44 AM
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Crank noises tend to be "creaks" at certain spots in the rotation. Bottom bracket bearings are usually felt (grinding feeling) as much as heard. If you are sure it's not pedals then you must have swapped them out for others and the noise didn't change. Bottom brackets don't wear out easily. How many miles on these parts?
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Old 09-13-11, 11:06 AM
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Originally Posted by dbg View Post
Crank noises tend to be "creaks" at certain spots in the rotation. Bottom bracket bearings are usually felt (grinding feeling) as much as heard. If you are sure it's not pedals then you must have swapped them out for others and the noise didn't change. Bottom brackets don't wear out easily. How many miles on these parts?
Bought the bike from craigslist and he said he just regularly commuted throughout LA with it. I forgot to ask how many miles were on the parts. There's a SLIGHT grinding feeling (if we're on the same page on how it's supposed to feel) throughout the full rotation. Yes, it's definitely not the pedals.
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Old 09-13-11, 12:17 PM
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Replace the bottom bracket.

I've always presumed fixie builds would be harder on the bottom bracket. More stress in more directions with rotation resistance and jump stops and such.

You'll need a crank puller and BB wrenches.
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Old 09-13-11, 12:48 PM
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Originally Posted by dbg View Post
Replace the bottom bracket.

I've always presumed fixie builds would be harder on the bottom bracket. More stress in more directions with rotation resistance and jump stops and such.

You'll need a crank puller and BB wrenches.
Alright, thanks! I'll look into it. Gotta hit the LBS for the tools. Got any advice for a decent BB or should I just give a visit to the SSFG forum?
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