Carbon Brake Track Scratch
12-05-14, 10:32 PM
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Carbon Brake Track Scratch
Hey All,
I rode my carbon Dura Ace C50 wheels just a few times and I see some scratches on the brake track ..Two of the scratches appear heavy...
Would continuing using these wheels cause a crack or issue with the wheels?
I rode my carbon Dura Ace C50 wheels just a few times and I see some scratches on the brake track ..Two of the scratches appear heavy...
Would continuing using these wheels cause a crack or issue with the wheels?
12-06-14, 09:35 AM
#2
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live with the choice of carbon . something got in your brake pad . issue is the act of riding on them in the real world.
brakes work by friction between pad and rim.
brakes work by friction between pad and rim.
12-06-14, 09:40 AM
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aka Phil Jungels
Switch to disc brakes, and the problem will go away forever...............
12-06-14, 09:57 AM
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Carbon rims are one case where disc brakes are a worthwhile solution from rim damage and brake efficiency standpoints. However the reasons for choosing carbon rims are lighter weight and better aerodynamics. Disc brakes negate both.
12-06-14, 10:12 AM
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To answer the OP.
Rim makers have to engineer to allow for wear. While carbon rims are more pone to wear damage than aluminum, this was also factored, so IMO (and without actually seeing it) your wear is well within normal bounds and the rim is still safe.
Try to slow future wear by using pads made for carbon rims, keeping them clean and free of grit, and limiting brake use where it's possible to do so. Personally I wouldn't use carbon rims for urban cycling where stop and go is the norm, but they're fine for open road riding where it's mostly light speed control braking.
Rim makers have to engineer to allow for wear. While carbon rims are more pone to wear damage than aluminum, this was also factored, so IMO (and without actually seeing it) your wear is well within normal bounds and the rim is still safe.
Try to slow future wear by using pads made for carbon rims, keeping them clean and free of grit, and limiting brake use where it's possible to do so. Personally I wouldn't use carbon rims for urban cycling where stop and go is the norm, but they're fine for open road riding where it's mostly light speed control braking.
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12-06-14, 10:40 AM
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my carbon rims have similar marks on them. it's all part of the braking process.and to be expected. i don't worry about it.
12-06-14, 11:31 AM
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Ok Cool....Thanks for the replies. I dont mind scratches....I just wanted to make sure the scratches were going to break through the carbon surface.
12-06-14, 02:08 PM
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In any case, you'll know when it's getting too deep by seeing visible fraying of the carbon with some fuzzy strands hanging loose. Even then the rim will still have structural integrity, but cutting into the fabric plies themselves in an indicator that it's getting serious.
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Just because I'm tired of arguing, doesn't mean you're right.
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12-06-14, 07:55 PM
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Well, that's easy. Embed a small stone in the shoe and keep riding.
In any case, you'll know when it's getting too deep by seeing visible fraying of the carbon with some fuzzy strands hanging loose. Even then the rim will still have structural integrity, but cutting into the fabric plies themselves in an indicator that it's getting serious.
In any case, you'll know when it's getting too deep by seeing visible fraying of the carbon with some fuzzy strands hanging loose. Even then the rim will still have structural integrity, but cutting into the fabric plies themselves in an indicator that it's getting serious.
But thanks for the heads up
12-06-14, 08:16 PM
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Looks like you are using brake pads meant for aluminum brake tracks. If so, that is a no-no. Use pads recommended by Shimano for carbon brake tracks.
12-06-14, 09:08 PM
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