How long a carbon road bike could use?
05-29-15, 01:59 PM
#51
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Is your finger poised over the "Lock" button ??
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05-29-15, 03:08 PM
#52
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A friend of mine races in pro cyclocross events across the country. She typically comes to each race with 4 or 5 brand new bikes. Each lap she will pit and swap bikes. The old ones are immediately discarded, as they are unsafe for any future usage. Some other riders even have new frame handups halfway around the lap because they don't trust their carbon to last a full lap at race speed. There are still dozens of catastrophic injuries in every professional cross race due to failed frames. It's really a sad story.
05-29-15, 05:37 PM
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How about instead of shouting to everyone else that they're wrong, why doesn't someone post some of the solutions from one of the, apparently numerous, threads that have already been made about this topic?
05-29-15, 06:22 PM
#58
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I'll play ! I have two Zipp2001 from 1993 (22 yrs. old) with one at a tad over 63,000 miles and the other at 21,000 full carbon beam bikes. I also have a set of Tri-spokes with over 40,000 miles on them. They are still ridden each week and not worried about failure.
05-29-15, 06:23 PM
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https://www.livescience.com/33605-rhi...-medicine.html
05-29-15, 06:48 PM
#61
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Does this mean that carbon fibre airplanes like a Cirrus SR-22 can only be flown for 3 years too?
05-29-15, 07:17 PM
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Black Rhinos are going extinct largely because people in China, your country, think that the horn of the black rhino is some sort of magic viagra because you know a hort stands up and is hard. Sadly for the poor black rhino and the rest of the world that will be deprived of them, it's not the case. I wouldn't put much thought into what your friend thinks. Carbon fiber bikes aren't some magic new idea. There's lots of data on the topic.
Chinese Folk Medicine Driving Rhinos to Extinction
Chinese Folk Medicine Driving Rhinos to Extinction
05-29-15, 07:26 PM
#63
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This year I'm on pace for 10k miles, but that is far below the past few years. Life got busy, and my dad is battling cancer. Some days it's hard to find the will to ride.
05-29-15, 07:46 PM
#64
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I have at least 50,000 miles on mine, still perfect. I never babied it, either. Carbon/epoxy laminate is the most fatigue resistant material that I know of. You may not have noticed, but it's the new go-to material for commercial aircraft wings.
05-29-15, 10:52 PM
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Really CF is a concern for environmental reasons? Burying a couple pounds of CF every 5 yrs is going to harm the planet somehow? How much gas and oil does the average person burn in 5 yrs?
05-30-15, 02:44 AM
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He or she also jumps off the Brooklyn Bridge so why he is worth quoting?
Last edited by v70cat; 05-30-15 at 03:05 AM.
05-30-15, 05:24 AM
#68
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The Dirty Secret Of Carbon Fiber - Science News - redOrbit
05-30-15, 09:32 AM
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I didn't say the issue was specific to only bikes. If you care, an article on the issue:
The Dirty Secret Of Carbon Fiber - Science News - redOrbit
The Dirty Secret Of Carbon Fiber - Science News - redOrbit
05-30-15, 05:56 PM
#71
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If you bend aluminum, it can be straightened. If you crack aluminum, it can be welded. We have an aluminum welder at our auto shop and I have seen several parts including body panels repaired so your theory of not being able to repair aluminum is flawed. As far as carbon goes, sure you can patch it but what about the layup? The strands of carbon fiber are "laid" down in certain lengths and patterns to give it strength so just patching a hole only fixes the cosmetic damage but leaves the affected part more susceptible to a catastrophic failure. Sure an aluminum or even steel bike could be damaged beyond repair but the same amount of force that noodled the metal frame would surely wreck a carbon frame as well.
Also, you can probably weld aluminum body panels but I wouldn't want some structural part to be welded by someone in a shop. Aluminum is generally heat treated after welding. I don't see many shops offering to repair aluminum bikes, which tells me that it's probably ot practical.
05-30-15, 06:20 PM
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Few rode carbon in the 80's. I had a Vitus Carbonne 9 with full C Record in 1986. The glue failed and the seatpost broke; I tossed it into the dump
I have a very early 90's Kestral that still rides fine. It is a 62 Cm frame and I had it at 16.5 lbs with tubulars back in the day. It will never fail.
I have a very early 90's Kestral that still rides fine. It is a 62 Cm frame and I had it at 16.5 lbs with tubulars back in the day. It will never fail.
05-30-15, 06:46 PM
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Where can I find the expiration date on the frame? 
05-30-15, 07:15 PM
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05-30-15, 08:10 PM
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I wonder if lifespan has less to do with material used and more to do with design? Do manufacturers design carbon bikes with the intent that they will last a long time?