(MARRS-RX7) HANS vs ISAAC

Adam Baitis adam
Sat Nov 15 00:17:04 CET 2008


Does the extra mobility make the sliding tether less safe?

Gervais, Al wrote:
>
> You can buy one as an add-on for your existing HANS, or buy a new HANS 
> with the sliding teather.  I love it.  I can move my head around 
> enough that I can watch trans fluid leaking in on the passenger side 
> floor. 
>
>
>
> ----- Original Message -----
> From: spec7-bounces at specrx7.com <spec7-bounces at specrx7.com>
> To: Spec RX-7 <spec7 at specrx7.com>
> Sent: Fri Nov 14 17:55:49 2008
> Subject: Re: (MARRS-RX7) HANS vs ISAAC
>
> Just as an FYI...not sure if you are all aware, there is an update to 
> the Hanns. It is a different strap that allows your head to to rotate 
> this allows for movement and prevents your head from being snapped 
> streight.
> The first time i went out with it i thought i had forgotten to hook 
> the straps. It is a huge saftey change that makes it 200% more 
> comfortable.
> Kevin
> Sent from my Verizon Wireless BlackBerry
>
> -----Original Message-----
> From: Bill #77 <77 at stuart5.com>
>
> Date: Fri, 14 Nov 2008 17:29:30
> To: <spec7 at specrx7.com>
> Subject: Re: (MARRS-RX7) HANS vs ISAAC
>
>
>
> I own the HANS, and I like it. I've used it in what was probably a 
> 25-30 MPH offset crash when that Neon raped me, and I definitely felt 
> it work. Zero soreness or stiffness the next morning. Granted, the 
> cars crumpling absorbed a lot of the energy.
>
> I looked at the ISAAC back in 2004 when I was looking to buy, and 
> again yesterday when Robert brought it up. I really like the concept 
> of the ISAAC, and the guy makes some compelling arguments.
>
> The reason the ISAAC doesn't meet SFI spec is because releasing the 
> belts alone does not release the device, not because there are two 
> releases. Every other device is attached to the driver and held by the 
> belts. When the belts come free, the other devices are free.
> http://www.isaacdirect.com/SFI.html
>
> The guy has had at least five years to come up with a way to meet the 
> SFI spec, or make a big stink and get the spec changed. I can easily 
> imagine a device something like the HANS with wings coming over the 
> tops of the belts to hold the shock-absorbing devices. Belts come 
> loose, device is free, SFI spec is met. If I can think of this, why 
> can't he?
>
>
> And listing people who died or were injured while wearing the HANS is 
> just not cool, IMHO.
>
> So I like the idea of the ISAAC, but their published information (and 
> attitude) and lack of wider approval make me uneasy.
>
>
> These sites appear to have up-to-date links and news on many H&N devices:
> http://www.trackpedia.com/wiki/Head_and_Neck_Restraints
> http://www.jayski.com/pages/restraint.htm
>
>   - Bill
>     SRX7 #77(RIP) & #79          Go Racing NOW!
>     Forest Hill, MD            http://SpecRX7.com/
>
>
>
>
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