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Paint chipping on carbon chain stay

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Paint chipping on carbon chain stay

Old 08-19-08, 09:07 AM
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round-the-bend
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Paint chipping on carbon chain stay

The underneath of the drive side chain stay on my Izoard is chipping badly down to the carbon. What is causing this and can anything be done to stop it?
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Old 08-19-08, 09:27 AM
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Old 08-19-08, 11:17 AM
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Strange spot. How old is the bike?

Nothing wrong with my mortirolo, but it's only a month old.
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Old 08-19-08, 11:20 AM
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Clear tape. Bike shops also sell stick on chain guards in clear, black or chrome.
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Old 08-19-08, 11:43 AM
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Or velcro-on chain guards in fabric and/or neoprene.

I put clear packing tape on mine pretty soon after buying it.
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Old 08-19-08, 11:49 AM
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Hmm. I have the same issue on my Trek 5200. I think it may be from the flexing at the joint where the aluminum dropouts are inserted into the carbon tubes. But this is an outdated production method--don't know if your Izoard has the same construction.
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Old 08-19-08, 12:36 PM
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If just on one side, it spells defect. Dunno how serious.
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Old 08-23-08, 05:06 AM
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Originally Posted by smd3 View Post
Strange spot. How old is the bike?

Nothing wrong with my mortirolo, but it's only a month old.
5 months old. The chipping is about half way along the stay.
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Old 08-23-08, 05:09 AM
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Originally Posted by caloso View Post
Hmm. I have the same issue on my Trek 5200. I think it may be from the flexing at the joint where the aluminum dropouts are inserted into the carbon tubes. But this is an outdated production method--don't know if your Izoard has the same construction.
The chipping is half way along the stay almost under the gear cable. I think it must be the chain because there are slight marks on the gear cable. Why is the clear protector on top of the stay and not under it ?
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Old 08-23-08, 05:13 AM
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I have had some chain suck problems when changing from big to small ring and I'm wondering if that is when it happened. It seems though that paint doesn't adhere to carbon as well as aluminium or steel.
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Old 08-23-08, 06:23 AM
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clear nail polish will touch it up
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Old 08-23-08, 07:32 AM
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Originally Posted by round-the-bend View Post
Why is the clear protector on top of the stay and not under it ?
Because, usually, the only time the chain hits the stay is when it shakes downward as you hit bumps.

Maybe you're right about it happening to yours when the crank sucked up the chain. Hmm..
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Old 08-23-08, 08:02 AM
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Originally Posted by nitropowered View Post
clear nail polish will touch it up
That's the other annoying thing, the chips are on a red painted bit with a white logo. So I have found some car touch-up paint to match (Fiat red) but it looks a bit scabby.
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Old 08-23-08, 08:21 AM
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Chain slap. Get one of those Neoprene chain stay protectors.
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