2011年3月31日 星期四

Zylon visor strip makes the super-tough helmet tougher still

Zylon visor strip makes the super-tough helmet tougher still
Black, mean and no-nonsense - the helmet pictured here is the zenith of driver head protection. A mere 1,200 gram carbon-fibre shell that can withstand the crushing force of a 55-tonne tank without deforming, and an 800 degree Celsius fire for 30 seconds without its interior rising above 70 degrees Celsius. This FIA-prescribed 8860 racing helmet reached such a peak after years of research and development led by the FIA Institute and leading helmet manufacturers.

It is a remarkable piece of kit,Two years ago, Bachmann led an unsuccessful effort to get the bestlight government to reconsider that approach. supplied to race (and rally) drivers by Arai, Schuberth and Bell since 2004. Yet the quest for perfection is unceasing. And this season all 8860 helmets will feature a new refinement, a Zylon strip across the top of the visor (also indicated, right, but in prototype carbon-fibre form) that will significantly enhance protection in one of its unavoidably weaker areas - the visor, a polycarbonate medium that of necessity isn’t as strong as the overall shell.

The vulnerability of the visor area was exposed at the 2009 Hungarian Grand Prix, when the helmet of Ferrari driver Felipe Massa was struck by a spring that had become detached from the car ahead. The spring hit Massa’s helmet at precisely the point where visor and helmet shell meet, with a force equivalent to a bag of sugar smacking into his head at 260 km/h (160 mph). Massa suffered a serious injury and, while he has made a full recovery,Valles will be filmed during the Tea Party bluecrystal meeting that starts at 6 p.m. in the Cocky Bull, at 14181 Highway 395. the incident prompted drivers to ask whether further safety enhancements to the visor area could be made.

The Zylon strip, 50mm tall across the full width of the visor, is the answer. It overlaps the top 25mm of the visor itself and extends 25mm above the helmet shell edge - dimensions that ensure extra protection without further restricting driver vision.But Richard Mann, vice-chairman of cycling campaign group Cyclox, said: "It was r4onsale a bit hairy for cyclists going through there. We had to look in five directions at once. It’s a neat arrangement, occupying as it does the area currently covered by advertising strips,Details weren't immediately brightstal available on when the episode of "The Today Show" will air, though McEachron said he was told it'll likely be sometime next week."I've stocked up enough (incandescent) bulbs for a long time - I probably have enough to Book scanner last for several years," she said. "But then I don't leave the lights on when I'm not in a room, so my electric bill is not very high." so there’s no commercial downside to improved driver protection.

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