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carbon components in the cold?(8 posts)

carbon components in the cold?jw25
Feb 11, 2003 10:58 AM
My road bike has a full carbon fork and a carbon seatpost. For some reason, the thought of riding them in PA's current weather (teens to 20's) makes me a bit leery.
Am I just imagining things? Any materials scientists to set me straight on resin properties?
The fork's a Columbus Muscle, the post is a Weyless, if it helps.
Be real careful below 20 degreespmf1
Feb 12, 2003 4:40 AM
cause carbon can shatter if it gets too cold. And it gets soft and melty around 95 degrees.

Wanna buy some beach front property in Florida?
Be real careful below 20 degreesjw25
Feb 12, 2003 7:35 AM
Yeah, I've seen plastics shatter in the cold,and considering the resins used are just plastic, well, a carbon fork steerer makes me nervous.
And my dad does have some beachfront property on the Keys. If I didn't have to work, believe me, I'd be down there all winter.
Thanks for the info.
I was jokingpmf1
Feb 12, 2003 9:06 AM
Carbon fiber is just as tough as anything else bikes are made of. Formula One race cars are made of it. It is used in the aerospace industry.

I have 3 road bikes and two are carbon fiber. All have carbon forks. I wouldn't doubt the integrity of carbon at any temperature. Its very tough stuff. Don't worry.
Yeah, I'm a big dork.jw25
Feb 14, 2003 2:07 PM
See, I thought you meant "ride where it's warm", not "Sucker".

I'll shut up and ride, now.
early carbon maybe..dotkaye
Feb 12, 2003 4:34 PM
I had one of the first generation of carbon fly-fishing rods, had it 17 years, and it did shatter while fishing in temps around 20deg. It basically delaminated, I was left clutching a bundle of expensive carbon threads.. So I don't think this is merely an old-wives' tale. That said, there has been a lot of epoxy resin under the bridge since that rod was made: I'd be very surprised if the latest generations of carbon had not fixed the problem with cold.
Have you ever heard of skis?Kerry
Feb 12, 2003 6:30 PM
The construction of alpine and nordic skis is very analogous to bike frames. I was skiing on Saturday at -13F (-25 C). Lucky for me that my skis didn't shatter as I cruised through the bumps! The fact that skis do go flat with time (typically well over 100 days of skiing) as the fibers break or pull out and the epoxy matrix cracks is one of the reasons I'm not a fan of CF frames. However, I have a CF fork and don't worry a bit - no surface cracks after 45K miles. Skis will give away their descent into "flatness" by cracks forming on the surface near the tip.
Have you ever heard of skis?deHonc
Feb 12, 2003 6:52 PM
Kerry,

Does your bike have a LIFETIME warranty - my carbon fibre one does!

Dan