(25-05-2014, 08:35pm)BikerBoy Wrote: Can't agree guys...and there's pic's and evidence online to support. Not just "I know a guy" or "I read somewhere" etc.. actual real world examples.
I've seen BST's with hairline cracks, a set shattered into many pieces on minor impact and another with the hub ripped away from the spoke.
MotoGP also banned them as they were not deemed safe for use. Strength comparisons against alloys mean nothing....it's just a talking point.
A weaker material with the correct properties, structure and design for application wins hands down over....but this material is stronger.
Forged alloys for street!
edit: I did lots of research before I forked out $$$$ on rims. I wanted carbon fibre and bought forged alloy (galespeed) and never looked back.
Good point, that shows other aspects of the problem.
1. Not referring to any brand in particular but just because a product is on the market does not mean the engineering or application is correct for the parameters of usage. I have seen far too many both carbon and alloy products readily available on the market that I simply would not trust or go near.
2. Even the big name brands that have earnt trust and reputation cannot possibly take into account every scenario of the road surfaces we encounter. One thunking great pothole, a kerb struck or an impact with road debris and all bets are off for structural integrity.
The major problem with an impacted carbon product is that damage may not be apparent externally, so some people assume it is ok, when that may be far from the case and then continue use until failure occurs.
Like any product used in a stressed environment, even the best must be regularly checked for signs of damage or wear.
As for real world examples of failure, do you know the complete history of the wheels in question before the failure?
Not arguing your point, but all to often people deny or forget an earlier incident that may have led to the eventual failure.
I don't believe there is one perfect material, everyone must look at their own needs, usage and riding environment to make the best decision for them, just as you did.