Clicking sound of chain falling over cog?
02-28-06, 11:49 PM
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I can't get my cog to shut up--it has this small clacking sound, seemingly of the chain falling over the cog as it's turning. Is this because of a messed up chainline--which I have gone to great lenghts to correct, and am pretty sure is very good--or is this a normal sound? Should I expect a completely silent drivetrain?
I think it MAY be because my chainring is NOT completely true--I notice that when I look at the chain as its turning, it wavers to one side maybe 1 mm every rotation--maybe this is making the chain "sound" like it's not completely striaght. Sigh...
I think it MAY be because my chainring is NOT completely true--I notice that when I look at the chain as its turning, it wavers to one side maybe 1 mm every rotation--maybe this is making the chain "sound" like it's not completely striaght. Sigh...
Last edited by str8flexed; 02-28-06 at 11:54 PM.
03-01-06, 12:09 AM
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Does it still make noise when you're riding in the street? My drivetrian makes that noise on the stand, too, but when I ride outside I can't here a thing. Sssssilent. Also, I never got silent until I used Tri-flow on my chain.
03-01-06, 12:11 AM
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I love riding down the street at night hearing that very faint sound of the chain clicking into place on the cog.
03-01-06, 01:42 AM
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i beleive the noise that you're hearing is when the chain's sideplate is coming into contact with a tooth of the cog. this happens because the chain is being pulled at a slight angle. when i set up my new drivetrain with a bb spacer i heard a clicking noise when rotating the pedals slowly. after i had removed it, the chain was pretty much dead silent. i should mention that I use chain tensioners to keep the wheel centered and the chain, well, tensioned.
check to make sure that your rear wheel is straight. otherwise it's likely a chainline issue.
maybe if it was less windy i could hear the rollers coming into contact with the bushings.
check to make sure that your rear wheel is straight. otherwise it's likely a chainline issue.
maybe if it was less windy i could hear the rollers coming into contact with the bushings.
03-01-06, 07:13 AM
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don't pedal backwards...
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My drivetrain makes a gentle clacking noise pretty much all the time. I've got a perfect chainline as near as I can measure, so I figure it must be the rollers snapping against the cog as they make contact. I might try putting a little bit of thick grease on three or four spots between teeth on the cog to see if the sound becomes intermittent with the wheel rotation as a result. This is a brand new KMC bmx chain and a DA 15t cog.
The funny thing is that when I flip the wheel over to try out the 16t Shimano freewheel, it's dead silent. I think the teeth are shaped slightly differently on the freewheel or something.
The funny thing is that when I flip the wheel over to try out the 16t Shimano freewheel, it's dead silent. I think the teeth are shaped slightly differently on the freewheel or something.
