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simsport · Joined: 06 Nov 2002 Posts: 573 Location: UK Warrington

Has anyone experience of using the HANS devices in a 924 in the US?

There are several types available, the original HANS of course but its very expensive, SIMPSON make a system which is cheaper and GFORCE also now have one on offer although you have to use their make of helmet.

Sadly one of our younger drivers had a serious crash a few weeks ago with what could be long term damage. Myself and one or two of the old school have been asking ourselves if a HANS device of any kind might of helped.

I think the conclusion is possibly not but the kit may be worth having in anycase. Of course you cant really place a cost on safety but....if its very pricey it simply will not be the top item when new tyres are needed, or brakes or...or...I guess weve all been there.

Cheers
Simon
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924RACR · Posted: Wed Nov 14, 2007 11:38 am Post subject:

I can't believe you aren't using any such device.

I am using an ISAAC device (www.isaac-direct.com) along with a center net from Safety Devices/BSR. I've used my ISAAC a few times, and been glad to have it. I would also not be ashamed to use a HANS, but wouldn't bother with anything less.
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Vaughan Scott
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'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

simsport · Joined: 06 Nov 2002 Posts: 573 Location: UK Warrington

Thanks for tip, will look at the ISAAC device.
Simon
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simsport · Joined: 06 Nov 2002 Posts: 573 Location: UK Warrington

Vaughan
Which model do you use?
I notice the new link system is very cheap as it does not use dampers, I have asked them how much difference that makes to the risks of injury.

Even so, the other systems do look to be good value too, seems a nice simple setup.

Thanks again
Simon
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924RACR · Posted: Fri Nov 16, 2007 7:40 am Post subject:

I use the full-damper Intermediate setup.

You should also be looking into a center net.
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

PORSCHEV · Posted: Fri Nov 16, 2007 11:21 am Post subject:

I support safety in racing 100% but I do however find issue with the dramatization of the issac head restraint video. They depict a video in which one driver is wearing a hans devise the other the issac device. In both videos the drivers aren't clearly tightly strapped tightly enough. If you look at the slack that the body takes up in the 5 point harness..it clearly exaggerates the total body movements.

I know when I am strapped in.... it takes all I can do to move my shoulders a 1/4" off the seat to turn my fan switch on.

I do agree any of these head restraints are better the an old neck brace but the data backing the device doesn't hold any weight with me after looking at the video.
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1976 924
5 lug conversion, 17'C2 wheels,custom body work,327 vette engine.

1978-#53 "D" track racer.

924RACR · Posted: Sat Nov 17, 2007 12:05 am Post subject:

HAVING BEEN PRESENT FOR THE TESTS...

I assure you that the belts are STUPID tight. Furthermore, as the body of the dummy is essentially a rigid body, there is no opportunity for slack in the belts (vs. what you get when you strap in, tighten belts, then exhale and tighten them again).

They also have a Really Big Guy at Wayne State, where the sled is located, who tightens the straps by climbing up on top of the rig cockpit and applying much more force than any of us ever could in a car with a roof. Let's just say I'm glad he isn't tightening my belts!!!

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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

PORSCHEV · Posted: Tue Nov 20, 2007 10:53 am Post subject:

Wow

I am glad you set me straight on that. I must not be putting mine tight enough then!
_________________
1976 924
5 lug conversion, 17'C2 wheels,custom body work,327 vette engine.

1978-#53 "D" track racer.

924RACR · Posted: Wed Nov 21, 2007 1:38 am Post subject:

No, nothing personal intended - just pointing out that it's surprising how much things flex at those high G loadings.

Simon - one thing I will mention about the ISAAC, its only drawback is the issues of SFI or FIA ratings. Check to see what requirements are currently in place or are being considered for implementation in your sanctioning body.

The ISAAC devices have the performance, but the whole issue of single release point is a BS red herring that Hubbard/Downing (makers of the HANS) are using to block their most serious competition - unfortunately. Seems they like to follow the Microsoft market strategy example...

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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

gla924sem · Joined: 08 Nov 2002 Posts: 405 Location: Taylor, Michigan

If you want to see belts stretch watch the launch sceens from the movie Apollo 13!!!!!!!

simsport · Joined: 06 Nov 2002 Posts: 573 Location: UK Warrington

Vaughan, guys
Good advice as always.

I asked the MSA here (our ruling body) and they have firmly come down against any device other than HANS that needs the helmet mounts etc.

Only other option we have is a neckbrace and I am now looking into that with the LEATTE BRACE. Its not as good as HANS but should work well enough and will end up a serious amount cheaper.

Cheers
Simon
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