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Recreational Cyclocross and Gravelbiking This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

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Old 10-27-04, 08:04 AM   #1
jfmckenna
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carbon seat post

At a cx race last Sunday I saw two carbon seat posts break!!!
One was an A racer who broke it with in the first 10 minutes and was standing up for the rest of the race. I think I will stick to AL or TI for seat posts. Anyone else?
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Old 10-27-04, 01:06 PM   #2
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I just don't see how a properly designed carbon fiber seatpost could just break. What brands?
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Old 10-27-04, 01:50 PM   #3
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Quote:
Originally Posted by Phiber
I just don't see how a properly designed carbon fiber seatpost could just break. What brands?
I don't know what brands but believe me it happened. I was just guessing that with all the bouncing around and mounting/dismounting that the carbon was too brittle? You could see the pointed edges of the post like it was a brittle fracture if you know what I mean.
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Old 10-27-04, 02:29 PM   #4
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Could be the edge on the seat tube concentrated too much force for the carbon to handle? Which way did they break? (like backwards, front, or sideways)
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Old 10-27-04, 02:32 PM   #5
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I've seen it where the bike is bouncing on the remount and the rider hit the seat on the back end of it. SNAP! No more seatpost...
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Old 10-28-04, 07:10 AM   #6
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Definitely stick to Ti for a X seatpost. Fairly light, extremely strong. Damps some vibration. If you're a weight weenie USE makes one that is approximately 155 grams. I go with the Dean post myself. They are made in the USA and they stand by their products for life.
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Old 11-02-04, 03:14 PM   #7
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Just a follow up. The story: http://www.fastcoaching.com/ first paragraph says it all.
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Old 11-05-04, 02:56 PM   #8
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Just a follow up. The story: http://www.fastcoaching.com/ first paragraph says it all.
What?
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Old 11-09-04, 07:35 AM   #9
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Quote:
Originally Posted by Phiber
What?
Oh sorry about that

That site uses frames though it does not look like it. This is the page out side of the frames page:

http://linedrivepro.com/fast/fast2/new2/cross0401.html
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