(MARRS-RX7) HANS vs ISAAC

Gervais, Al AGervais
Sat Nov 15 00:21:58 CET 2008


I'm no expert, but I'm guessing not.  When you pull your head forward as
you would in an impact and the tethers go taught, you can't rotate your
head.


-----Original Message-----
From: spec7-bounces at specrx7.com [mailto:spec7-bounces at specrx7.com] On
Behalf Of Adam Baitis
Sent: Friday, November 14, 2008 5:17 PM
To: Spec RX-7
Subject: Re: (MARRS-RX7) HANS vs ISAAC

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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