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A lot depends upon how it is used and taken care of, there are many carbon frames around that are far older than 3 years old.
 
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It can last forever as long as it won't receive a direct impact strong enough as to crack the carbon fibers. So the answer is: It depends on the use.
 
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I was told that carbon doesn't fatigue like alu does. The down tube of my Heckler cracked nearly all the way round after two years of hard trail riding and was told that would not have happened if it had been carbon. Now on a Mojo for the past two years.............and seen on the Ibis forum that there are guys riding Mojos 5 years old
 
My girlfriend's father still rides his OCLV Trek road bike.. from 1993. Carbon tubes, aluminum lugs.
 
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And how it was made.
.
I have had 2 Trek Fuel main triangles break, both in their first and second year respectively, but have had a Turner Flux since Jan 2006 which is still going strong.

The Flux has had a far more active life than the Treks ever had and has even done a week in the Alps doing La PassPorte Du Soleil. (Both the Trek and the Turner frames are the same weight around 5.4 lbs).

So +1 for how it was made...
+1 who made it...
+1 for how you ride it...

I have a 18 year old aluminium hardtail that I did downhill races on back in the day. Still going strong (though the Manitou 3 forks have seised, so it is now fully rigid).
 
Discussion starter · #8 ·
I see, not all carbon frames are made equal. I think Santa Cruz Nomad carbon is one of the better build in the market.

I am not a hardcore rider, only ride once a week on trails - doing small jumps and riding on rock gardens (short section), climbing hills and clearing technical obstacles along the way. Intend to keep it as my life long partner. hopefully it could last as long as I wanted.
 
We discuss these things to see whay bikes are most durable and why. A first generation Heckler my buddy owned he just sold for $1100 Cdn. He did drops hardass trails etc. It was a great bike. What I'm aiming at is - arent there any custom frame builders around that are willing to make a STEEL AM frame that is like a more current 6 - 7 inch travel that we know wont break. That we know that once we trick it out we can just go ride instead of weight weenieing?
 
I been riding my Trek 8700 composite since new in 1995 and no frame issues whatsoever. Original rear derailleur shifter broke, and flats from goatheads too numerous to count. That is is it.
 
Don't be that guy riding a Trek Y bike in 2011. :thumbsup:
A nice bike ten years ago is still a nice bike today, don't believe the marketing.

Speaking of which, I've got a pre-1990 Raleigh sitting in my basement, most reliable bike I've owned. All this high performance stuff is a lot of work, sometimes it's nice to just go out and ride a bike.

Wouldn't want to try a drop on it though...
 
I been riding my Trek 8700 composite since new in 1995 and no frame issues whatsoever. Original rear derailleur shifter broke, and flats from goatheads too numerous to count. That is is it.
Same story here;
Fisher OCLV since 1995, been through many drive trains, wore out a few Sid's, and several wheelsets (canti brakes)... still going strong. Of note, I was an extreamly strong and aggressive rider when I first got the bike... still aggressive... not near as strong.
 
The lifespan of the Carbon fibers is probably 1,000 years.
The lifespan of the epoxy holding the fibers together is probably 100+ years.
If you drive over it with a car..... well....... it's done.
Materials Science Engineer
 
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