Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

WTF is this noise? (VIDEO)

Old 12-09-08, 12:58 PM
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Scalawag
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WTF is this noise? (VIDEO)

http://www.youtube.com/watch?v=Wz0FFZdSCmo

I feel like it's not supposed to make this sound. I noticed a slight whirr while riding last night and figured it wasn't good... The hubs/chain/cog are all like 5 days old, still lubed up and fresh. What could it be? The chainline looks straight... Each tooth is catching right in the middle of the chain.
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Old 12-09-08, 01:07 PM
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are you running 1/8 chain, chainring and cog? 'cause that's what i run right now and it makes the same noise. i ran 3/32 chainring and cog and 1/8 chain on my last bike and it didn't make that noise.
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Old 12-09-08, 01:26 PM
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It sounds fine. Don't worry about it and just ride more. It will get quieter as all of the new components wear together some.

You actually used lube on these parts right? The stuff that comes on a chain is not enough.
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Old 12-09-08, 01:33 PM
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Originally Posted by 1fluffhead View Post
The stuff that comes on a chain is not enough.
I don't want to turn this into a discussion on chain-lube theory, but this generalization is not always true. Maybe on cheap chains, you should add extra lube or even start from scratch. Nicer chains typically come perfectly coated (lots between the pivots, little on the outside surfaces) with some quality lube. Dura-Ace chains (the only Dura-Ace part that is somewhat affordable) are beautiful right out of the box.
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Old 12-09-08, 01:34 PM
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yeah, it sounds like it just needs some lube. All fixed gears make that noise.
But eventually it will quiet up once everything is a bit more broken in.
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Old 12-09-08, 04:04 PM
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Originally Posted by darksiderising View Post
Dura-Ace chains (the only Dura-Ace part that is somewhat affordable) are beautiful right out of the box.
Lest we forget the mighty DA track cog? Best value in track components period.
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Old 12-09-08, 04:19 PM
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remember to be really careful with your fingers around spinning fixed gears. New stuff just needs to be worn in a little.
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Old 12-09-08, 04:34 PM
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^Yeah I also noticed how close the OP got to sticking his fingers between the chainring and the chain. Gotta be really careful about that. Good call.
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Old 12-09-08, 04:40 PM
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your chain might be the slightest bit too tight. try slightly more slack - with 1/4" - 1/2" of play all the way around. i bet it'll lessen the noise and be better for your overall drive train and efficiency...
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Old 12-09-08, 05:57 PM
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What noise?! you have to be kidding me! That noise is called a CHAIN going over a COG, you WILL hear something. You are not flying a ******** "Meet the Jetsons" space capsule! even that piece of futuristic crap makes a sound.

Put the camera down, step out of the basement and please do all of us a favor and ride your f^^king bike, then magically your noise may disappear. Its called wear and tear, its good for a bike.
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Old 12-09-08, 06:31 PM
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Originally Posted by brooklyn_bike View Post
your chain might be the slightest bit too tight. try slightly more slack - with 1/4" - 1/2" of play all the way around. i bet it'll lessen the noise and be better for your overall drive train and efficiency...
Yeah, I just tightened my chain by way of shifting the rear axle back, and I'm getting slightly more noise than when it had a good 1/2 inch on slack in it. Now it's about a 1/4" or so, but the noise is hardly noticeable outside.
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Old 12-09-08, 06:45 PM
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Hehe, the video of you popping into frame totally perplexed at a normal sound is pretty funny though

It's nothing. As your parts wear it gets alot more quiet but for me it's never gone away completely. I've heard alot to the effect that 3/32 is alot quieter if it's that big an issue to you though.
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Old 12-09-08, 07:01 PM
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Originally Posted by burglnar View Post
Lest we forget the mighty DA track cog? Best value in track components period.
Ah yes, of course. Add that to the list.
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Old 12-09-08, 08:30 PM
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nothing to see here; carry on...
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Old 12-09-08, 09:32 PM
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Originally Posted by darksiderising View Post
Ah yes, of course. Add that to the list.
Yeah but DA doesn't make a 17t cog.
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Old 12-09-08, 10:07 PM
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it sucks that he rides an IRO...
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Old 12-09-08, 10:08 PM
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ya let the cog teeth round out a lil and it'll go away
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Old 12-10-08, 03:42 AM
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That bike is hella dangerous. I wouldn't ride it. Your crank and cog is on the wrong side, almost sure of it. Hella dangerous. I heard of people getting jumped for trying to pull that kind of stunt.

But for real I bet have one of the components on like that could be causing some extra noise.
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Old 12-10-08, 07:45 AM
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Really stepping it up with video in your post - kudos.
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Old 12-10-08, 08:53 AM
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Sounds like a healthy drive train to me, but you installed it on the wrong side of the bike. Your chain also appears to be a bit too tight.
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Old 12-10-08, 09:19 AM
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Did you edit out the part of the video where the girl arrives, makes dumb dialog and then...

Ooops, transport me back to my usual forum. The one with the "special" videos.
Attached Images
File Type: jpg
Picture 5.jpg (32.8 KB, 28 views)
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Old 12-10-08, 04:11 PM
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Originally Posted by bmw5nkj View Post
are you running 1/8 chain, chainring and cog? 'cause that's what i run right now and it makes the same noise. I ran 3/32 chainring and cog and 1/8 chain on my last bike and it didn't make that noise.
+1
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