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Metal shavings coming off drivetrain - Noise when in the big ring - With Video

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Metal shavings coming off drivetrain - Noise when in the big ring - With Video

Old 02-05-17, 04:34 PM
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rollingsound514
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Metal shavings coming off drivetrain - Noise when in the big ring - With Video

Hi everyone, I've recently replaced by chain rings and kept them the same specs as the original. When I go to clean my chain and jockey wheels I'm finding some small amounts of metal shavings in my rag. When I'm riding in the big ring while on my trainer my drivetrain is making a bit of metallic noise. When I have the bike up in stand and I'm just turning the pedals without any real power being put down everything seems to be spinning freely without any rub. These noises only seem to come out when I'm putting down some power. The chain isn't stretched and in the video the drivetrain is freshly lubed.

Also if anyone wants to comment on my trainer's noise level, I've found it to be noisier than when I first got it, it's a TACX Vortex Smart.

Thanks a ton guys!

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Old 02-06-17, 04:57 AM
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xenologer
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what's that horrible snapping noise every time you shift?
that's the most alarming sound I hear

and see if the chain is rubbing against the Rear Derailer cage anyplace, in the big ring it gets rotated forward more than typical plus the chain angle isn't going to be great, so sometimes the chain can rub right around the lower jockey wheel

Last edited by xenologer; 02-06-17 at 05:03 AM.
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Old 02-06-17, 06:28 AM
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Esteban32696
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The shifting noise does sound harsh to me, too ! Have you checked to see if the derailleur is not bent ?
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Old 02-06-17, 07:11 AM
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grizzly59
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Look at your "B" screw adjustment on your rear deraileur. I think you may need the screw further in for the size of the cogs you have.
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Old 02-06-17, 09:55 AM
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rollingsound514
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Originally Posted by Esteban32696 View Post
The shifting noise does sound harsh to me, too ! Have you checked to see if the derailleur is not bent ?
Not bent, checked it recently
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Old 02-06-17, 09:55 AM
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rollingsound514
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Originally Posted by grizzly59 View Post
Look at your "B" screw adjustment on your rear deraileur. I think you may need the screw further in for the size of the cogs you have.
I'll try that
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Old 02-06-17, 09:56 AM
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Originally Posted by xenologer View Post
what's that horrible snapping noise every time you shift?
that's the most alarming sound I hear

and see if the chain is rubbing against the Rear Derailer cage anyplace, in the big ring it gets rotated forward more than typical plus the chain angle isn't going to be great, so sometimes the chain can rub right around the lower jockey wheel
No rub on rear jockey from what I see
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