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bobknh

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Reply with quote  #1 
In the open ITT at Tirreno- Adriatico pro stage race, Team sky had 3 Carbon TT wheels explode for no apparent reason: http://www.velonews.com/2017/03/news/tech-tidbits-tirreno-exploding-wheels-tt-disc-brakes_432121 . In my racing days I used a lot of carbon wheels. They were OK for ITT . I especially liked HED wheels which were both fast and reliable. I didn't like them at all for open racing and training. Braking was very un-predictable, and I witnessed a lot of broken carbon hoops. With the emergence of disc road and gravel wheels, carbon rims are becoming quite prevalent. Me-- I'll stick to alloy for awhile!
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oleritter

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Reply with quote  #2 
There are plenty of people beating on carbon rims on mountain bikes, just don't see what happened in a pro bike race as an indictment of all things carbon.  
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bobknh

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Reply with quote  #3 
Quote:
Originally Posted by oleritter
There are plenty of people beating on carbon rims on mountain bikes, just don't see what happened in a pro bike race as an indictment of all things carbon.  

I guess I'm revealing a little retro prejudice here. I'm fairly certain you are correct - especially for disc brake wheels which don't have to be compromised with brake tracks. Then again, I've been riding a long time and have seen just about every piece of equipment on a bike fail. But I've never seen a metal rim "explode". Bent, dented, taco'd - yes; explode catastrophically - no.
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ljsmith

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Reply with quote  #4 
I personally have no desire to ride carbon rims, but not because of any fear of failure. I think they are overpriced, and the performance overhyped.   However, all materials can fail catastrophically.  What does it matter if it explodes like carbon or cracks completely in half like aluminum?  Either one will toss you off the bike and mess you up bad.

Aluminum Cannondale:

[failed18jw] 
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bobknh

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Reply with quote  #5 
Quote:
Originally Posted by ljsmith
I personally have no desire to ride carbon rims, but not because of any fear of failure. I think they are overpriced, and the performance overhyped.   However, all materials can fail catastrophically.  What does it matter if it explodes like carbon or cracks completely in half like aluminum?  Either one will toss you off the bike and mess you up bad.

Aluminum Cannondale:

[failed18jw] 

Valid point. The only observation I can add, is that metal failures usually - but not always - give you some advance warning. Small cracks and bulges or bends usually foretell impending disaster. While well manufactured carbon bike components are very strong and durable, when they do fail, it can be totally unexpected and sudden. Also, carbon parts must be carefully torqued and installed to be safe and reliable. I never owned or needed a 0-15nm torque wrench, until I started using carbon frames and components. 
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NoCoGreg

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Reply with quote  #6 
That's what happens when the engineers or the factory makes an oops.  Let's face it, manufacturers are under pressure to make the faster parts for racers. Less weight typically affects strength, endurance/reliability and also the the margin for error.  I'll take tried and true - I've seen too many new technologies not live up to their hype (Look aluminum frames, titanium and then carbon spokes, drilled out components in the 70's, and on and on).  That said, I also agree there are lots of people pounding on carbon rims so I would have no problem riding/racing on carbon rims built into "traditional" wheels such as those from Fulcrum, Campy, HED, and others.  
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