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Old 07-22-08, 07:51 PM   #1
Fidelista
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Exploding bike!

After seeing that guy's Specialized carbon fibre frame just literally explode in the Tour de France the other night....I'm wondering how safe my current ride is.
Should I trade it on an alloy frame?
If I believe that a carbon frame may explode into pieces, is it OK to sell it to someone else?
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Old 07-22-08, 07:59 PM   #2
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Do you mean the one that broke in half when it hit the solid sign post head on at 30+ MPH?

An alloy frame would be just as unridable after that impact.
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Old 07-22-08, 08:07 PM   #3
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Yes. Your carbon bike will blow up randomly. I'll trade you for my aluminum. PM if interested.
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Old 07-22-08, 08:42 PM   #4
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My friend is looking for a carbon frame, please pm me if you would want to trade yours for his aluminum.
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Old 07-22-08, 08:44 PM   #5
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Do you mean the one that broke in half when it hit the solid sign post head on at 30+ MPH?

An alloy frame would be just as unridable after that impact.
But it just...disintegrated!
Either the frame was unsafe or it's sabotage.
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Old 07-22-08, 08:50 PM   #6
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yawn..........
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Old 07-22-08, 09:07 PM   #7
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But it just...disintegrated!
Either the frame was unsafe or it's sabotage.

wrong on both counts.
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Old 07-22-08, 09:17 PM   #8
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Oh yeah? Carbon is supposed to just shatter is it?
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Old 07-22-08, 09:20 PM   #9
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Oh yeah? Carbon is supposed to just shatter is it?
When it hits an unmovable object, yes
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Old 07-22-08, 09:36 PM   #10
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When it hits an unmovable object, yes
The signpost moved. The bike just moved 'more'.
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Old 07-22-08, 09:38 PM   #11
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If it's a 50cm, it's absolutely unsafe. PM me for an disposal address. I'll even help you out with the shipping.
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Old 07-22-08, 10:00 PM   #12
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If it's a 50cm, it's absolutely unsafe. PM me for an disposal address. I'll even help you out with the shipping.
The more I think about it the more I'm tempted to treat it like a crashed helmet i.e. destroy it completely so nobody ever gets hurt by it.
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Old 07-22-08, 10:04 PM   #13
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I saw this car wreck on TV. That steel car got all crumpled up!! I'm switching to bamboo, for safety's sake.
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Old 07-22-08, 10:10 PM   #14
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Neither a carbon frame or fork, nor an aluminum frame or fork is safe to ride after a high speed crash that bends or twists the fork or a tube. Neither material can be safely realigned after being damaged.

If you want a frame or fork that can be realigned safely after a crash, you need steel. If you already have a carbon frame or fork, just relax and enjoy your bike. If you damage the fork or frame in a crash, just buy steel next time...or buy aluminum...aluminum frames have become so cheap they are essentially
"throwaway" items.
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Old 07-22-08, 11:31 PM   #15
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Oh yeah? Carbon is supposed to just shatter is it?

are you familiar with the laws of physics?
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Old 07-22-08, 11:42 PM   #16
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I saw this car wreck on TV. That steel car got all crumpled up!! I'm switching to bamboo, for safety's sake.


This thread reminds me in the 70's when I had a Raleigh Chopper (red/yellow decals) and I hit a small tree. The steel frame bent in the middle but my dad fixed it up for me. After school I went out riding like there was no tomorrow with a big
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Old 07-22-08, 11:44 PM   #17
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These things are unsafe.
They should be banned IMO.
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Old 07-22-08, 11:49 PM   #18
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troll
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Old 07-22-08, 11:53 PM   #19
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Did you see the crash?

Carbon is the devil....lol
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Old 07-23-08, 12:18 AM   #20
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These things are unsafe.
They should be banned IMO.
I agree completely! Let's get rid of sign posts entirely!
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Old 07-23-08, 12:25 AM   #21
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Quote:
Originally Posted by Fidelista View Post
After seeing that guy's Specialized carbon fibre frame just literally explode in the Tour de France the other night....I'm wondering how safe my current ride is.
Should I trade it on an alloy frame?
If I believe that a carbon frame may explode into pieces, is it OK to sell it to someone else?
Frame material is the last thing you need to worry about when hitting a stationary object at 30 mph. That guy was damn lucky! I half expected to see him in hospital sucking his lunch through a straw.
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Old 07-23-08, 03:50 AM   #22
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actually, i would rather a frame crumple and take some of the inertia away rather than a solid steel frame just not flexing and transferring all the forces into me and catapulting me 5 meters
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Old 07-23-08, 09:03 AM   #23
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you guys didn't pickup on the sarcasim 15 posts ago?
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Old 07-23-08, 10:22 AM   #24
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Couldn't one make the argument that carbon is actually safer in these situations? The fact that it "exploded" perhaps demonstrates that the frame took all the force/energy of the impact, thus transferring less to the rider than either aluminum or steel.

Engineers, is this plausible?
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Old 07-23-08, 10:26 AM   #25
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Quote:
Originally Posted by alanbikehouston View Post
Neither a carbon frame or fork, nor an aluminum frame or fork is safe to ride after a high speed crash that bends or twists the fork or a tube. Neither material can be safely realigned after being damaged.

If you want a frame or fork that can be realigned safely after a crash, you need steel. If you already have a carbon frame or fork, just relax and enjoy your bike. If you damage the fork or frame in a crash, just buy steel next time...or buy aluminum...aluminum frames have become so cheap they are essentially
"throwaway" items.
A steel frame would have also been trashed in that crash. A lugged steel frame might have been repairable by replacing a tube or two,but then you have to consider whether that's worth the cost.
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