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carbon fork lifetime(7 posts)

carbon fork lifetimebestT
Jan 13, 2003 8:24 AM
How long does a carbon fork last? I have a 10 year old Kestral fork, 1" threaded, probably steel steerer, on my 10 year old Dean Ti backup bike. I still ride it 1-2 times a week on fast training rides. Is that fork still safe?
I wonder if there are anyOldEdScott
Jan 13, 2003 8:34 AM
real statistics on this? I have this queasy feeling about old carbon forks. It just SEEMS there's a good chance they've taken enough punishment over the years that they're likely on the verge of sudden, no-warning catastrophic failure. It's not a worry I have with steel forks.

Still, I've never seen any evidence that either feeling is true.
re: carbon fork lifetimeLC
Jan 13, 2003 9:05 AM
Theoretically CF has no limit to repeated cyclic stress, but there is some UV damage possible if the bike was stored outdoors. If you need an excuss for the wife ;) the most likely thing to fail is the bond between the steel steerer and the fork.
re: carbon fork lifetimecxer
Jan 13, 2003 12:44 PM
the only thing you have to worry about is damage---cracks or other damage.
If there is no damage---and it sounds like yours are just fine--- a carbon fork will outlast the metal on your frame.

There is no lifespan for carbon and will outlast any metal fork. Like I said, the only thing you need to worry about is damage or cracking that is usually caused by a crash.
What about corrosion?Nessism
Jan 13, 2003 3:17 PM
Lots of early carbon frames came apart because of corrosion between the joints of the dissimilar materials. Most carbon forks have other materials in them so this may be of concern at some point. Aluminum dropout comming loose? Internal fork crown insert reacting with outer wrap? Not sure but can't help but wonder.

Ed
Check velonews-tech w/Zinn, recent in-depth discussion nmseyboro
Jan 13, 2003 4:27 PM
too many variablesKerry
Jan 13, 2003 5:35 PM
No way to predict lifetime on forks, any more than on frames. Vigilant inspection is all the security you need.