MotoGP » Alpinestars airbag system explained

"...should the rider re-mount the bike and continue riding, the system re-arms offering the rider a second inflation charge"

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April 20, 2011 2:22 PM

I think it is a wise move to make these airbags mandatory.Any innovation which boosts the safety of the riders can only be a good thing.Probably quite an expensive item to incorporate into a set of leathers but worth every penny if they help to save a life.


April 20, 2011 4:26 PM

Very good question Far Canal. Alpinestars web site doesn't give a lot more info than this article but I believe it uses a combination of on bike sensors like GPS, accelerometers and position sensors in addition to rider sensors. I did find a news item saying this technology will be available in late 2011 for street riders at a premium over a regular suit of arouns 2000 Euros. Not in my price range I'm afraid :(
You can see their article at alpinestarsinc dot com forward slash safety.

Why Switch? - Unregistered

April 20, 2011 5:19 PM

Lorenzo looks like a right ol knob in those Alpinestar leathers, the dude should have stayed in Dianese , they suited him much better,

Same for Nicky feels weird seeing him on the Dainese leathers,

Does any one know why either of these two switched?

Was it continuity reasons? ie to be on the same leathers as their respective team mates?


April 20, 2011 5:35 PM

The Alpinestars system is more advanced than Dainese's in that it offers two charges compared to just one and doesn't use GPS (not ideal for highly precise, split-second measurements) as a sensory input. It relies completely on accellerometers, potentiometres which are fed into the CPU that simultaneously calculates half a dozen algorithms in real time, all of which have to reach certain trigger points before the system fires.

Hence Casey's didn't fire when he was taken out by Vale as it was a relatively low speed low side, so though he came off I guess the system was smart enough to know he wasn't going fast enough to do himself any damage.

And from what I heard, Dainese pushed hard to get Nicky since Vale joined Ducati and Lorenzo wanted to join Alpinestars at the end of 2009 but had a contract with Dainese until the end of 2010.


April 20, 2011 6:06 PM

As I recall,Lorenzo was the first to use the Dianese system on track.
Alpine Stars have responded.
I am for any advancement that would improve rider surviveability.
The Jerez crash confounded me to some extent.
Surely the Dianese airbag system should have deployed, unless it was not incorporated on the race day.
Afterthought.Lorenzo switched to A-Stars after he found out Rossi is a Dianese corporate bigwig like he is with AGV helmets. Nick, well, towing the corporate line as he did for HRC post 2006.

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