Carbon fibre brake rotors

Discuss light weight issues concerning mountain bikes & parts.

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02GF74
Posts: 728
Joined: Thu Jan 13, 2011 4:04 pm
Location: Sunny UK

by 02GF74

88g for 160mm rotor floating disc on a carbon carrier. Not especially light but comparable alloy carrier weighs around 100g.

Anybody tried these?
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by Weenie


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nickf
Posts: 1589
Joined: Sat Mar 06, 2010 10:34 pm

by nickf

Galfer road wave 160mm come in at 79g. Exceptional performance and in my experience they didn't warp once they get hot.

Butcher
Shop Owner
Posts: 2036
Joined: Sun Jan 03, 2010 4:58 am

by Butcher

Carbon does not transfer heat as well and with the less metal mass of the disc, would these rotors tend to overheat? I know it may not matter for those that do not have to stop fast, but it might be an issue with the climbers.

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SK5
Posts: 91
Joined: Fri Jun 23, 2017 4:03 am
Location: London .
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by SK5

Steel alloy is lighter .

Aluminium alloy ceramic coated is even lighter .

repoman
Posts: 65
Joined: Mon Jun 10, 2024 3:28 pm

by repoman

Seems like an absolutely nutty product. I cannot imagine the epoxy fairing well to the heat. The risk factor here just seems absolutely goober tier.

Xabi
Posts: 213
Joined: Thu Jan 12, 2023 10:55 pm

by Xabi

repoman wrote:
Wed Dec 11, 2024 1:54 am
Seems like an absolutely nutty product. I cannot imagine the epoxy fairing well to the heat. The risk factor here just seems absolutely goober tier.
It's just for the looks and weighting the bike, then you ride something else.

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ms6073
Posts: 4332
Joined: Fri Jul 23, 2004 8:24 pm
Location: Houston, Texas

by ms6073

repoman wrote:
Wed Dec 11, 2024 1:54 am
Seems like an absolutely nutty product. I cannot imagine the epoxy fairing well to the heat. The risk factor here just seems absolutely goober tier.
Has everyone has forgotten about the Silicon Carbide-Ceramic-Carbon Bicycle Brake Rotors on Kickstarter?
- Michael
"People should stop expecting normal from me... seriously, we all know it's never going to happen"

Butcher
Shop Owner
Posts: 2036
Joined: Sun Jan 03, 2010 4:58 am

by Butcher

They got carbon brakes on cars, not really the same as what we use carbon fiber on bicycles. Seriously light weight and seriously expensive. The mass of the rotor is huge compared to a cast iron rotor.

I cannot see how someone could make a carbon bike rotor without changing the thickness of the caliper. My guess is that it would have to be 4x thicker. Not a good thing for aerodynamics.

by Weenie


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