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Chinese Carbon Road Bikes => Road Bike Frames, Wheels & Components => Topic started by: Macedingle on January 25, 2024, 07:12:48 PM

Title: Yellowed carbon rim
Post by: Macedingle on January 25, 2024, 07:12:48 PM

Light catching my carbon rim showing a yellowish discoloration. Is this something to worry about?

Title: Re: Yellowed carbon rim
Post by: TidyDinosaur on January 26, 2024, 01:15:53 AM

How old is it? Maybe the resin or clearcoat is yellowing from the sun?

Title: Re: Yellowed carbon rim
Post by: Sebastian on January 26, 2024, 02:06:10 AM

Campagnolo had this issue in their first generations of carbon cranks like 20 years ago. It had something to do with long term exposure to UV sunlight and the resin or the clear coat discolouring. It didn’t compromise the structural integrity but it didn’t look particularly nice. Maybe it’s similar here. AFAIK basically all resins these days are UV resistant to protect the carbon from degrading due to sun exposure.

Title: Re: Yellowed carbon rim
Post by: Macedingle on January 26, 2024, 05:49:41 AM

Quote from: TidyDinosaur on January 26, 2024, 01:15:53 AM

How old is it? Maybe the resin or clearcoat is yellowing from the sun?

These are a month old, not even ridden yet

Title: Re: Yellowed carbon rim
Post by: hahel on January 30, 2024, 08:35:17 AM

Quote from: Macedingle on January 25, 2024, 07:12:48 PM

Light catching my carbon rim showing a yellowish discoloration. Is this something to worry about?

Is it a tubless setup? I'm thinking maybe some leaked tubeless goo in the tire/rim interface?

Title: Re: Yellowed carbon rim
Post by: Macedingle on January 30, 2024, 09:33:11 AM

Quote from: hahel on January 30, 2024, 08:35:17 AM

Is it a tubless setup? I'm thinking maybe some leaked tubeless goo in the tire/rim interface?

Nope, just a TPU inner tube