There's some food for thought.

I am expecting more pictures like this with the influx of cheaper carbon bikes and frames from china
 
Vaughan_Bar2-610x343.jpg



''after a rash of steerer tube failures, Trek has responded blaming incompatible stems and incorrect installation. Trek advises:
1) Always use a torque wrench, and never over-tighten stem clamp bolts.
2) Always use spacers above and below the stem. Although less obvious than correct torque, a minimum of 5mm and a maximum of 40mm spacers under the steerer, plus a 5mm spacer above the stem are required. Riders should factor in these spacers when sizing their bike.
3) Use only the stem brand and model that came with the bike, because not all stems will work with carbon steerers. Often the lighter the stem, the less chance it will be compatible with a carbon steerer. Weight-relieving cutouts on the stem clamp and steerer interface can create stress risers.
You can read the full article on VeloNews. I'd rather just have a slightly heavier bike and be able to change my stem without fear of crashing.
''


WTF? wrong stem? er... thats a new one on me, its quite obvious the steerer failed regardless of stem. I wander what FSA would say?
 
Most of the ones on the site have broken after a crash, which is fair enough to be honest (although maybe a metal frame would have faired better). Cav's wheel looks nasty though!
 
Some nasty crashes there :shock:

But just to say..I broke some alloy risers once....they snapped after a jump and pinned my fingers to the ground...anything CAN break...... :wink:
 
Its rather odd that a forum of people who happily ride around on 20 year old, sub 130 gram aluminium handlebars would feel ill at ease using modern carbon parts.
 
Ouch!

Just what I don't need to read prior to hammering down to pick up my car later on carbon bars and forks. Surely some filling could be used to prevent catastrophe?
 
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