Seats and harnesses

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dbz
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Seats and harnesses

Postby dbz » Fri Jan 15, 2016 7:54 am

Hey guys, been looking into some proper FIA, ADR, CAMs approved seats for track days and so far have seen Cobra, Sparco and Velo, and leaning towards Velo GPT-1 http://www.autosport.com.au/velo-gpt1-fia-seat being Aussie made and meeting all regs. Anyone run airbag sensor resistors, and is it legal?

Regarding harnesses, has anyone one without harness bars or cage, and if so which part of chassis do you attach to? hmmm

And finally i heard that if we decide to use a harness a HANs device is also mandatory is that correct?
MY15 BRZ (Clubman Class) PBs: PI-1:49.7 Winton-1:36.1 Sandown- 1:26.0
MY15 BRZ (Street Class)
PBs: PI-1:54.7 Winton-1:39.9 Sandown-1:29.4 Broadford-1:08.5

jonoe
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Location: Glen Iris

Re: Seats and harnesses

Postby jonoe » Fri Jan 15, 2016 8:21 am

Any top brand seat should be fine. Try and sit in the seat first if possible, as different brands will have a different fit, having a correctly fitting seat is more important than brand. Some people run harnesses to the rear seatbelt mounts, which gives a slightly incorrect geometry for the harness. Ideally you want the harness to pass through the seat at as close to 90deg as possible, so in the the event of an accident you are pulled back into the seat, as opposed to being pulled towards the ground. A harness bar is the best solution without going for a cage, which is not practical / legal in a street driven car


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bazzasti
Impreza 22B Driver
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Re: Seats and harnesses

Postby bazzasti » Fri Jan 15, 2016 10:41 am

If you're going to get a seat just for track work, just be aware of 2 issues. 1 - without a cage, fixed back seats may present a danger to your spine in case of a roll over. 2 - IMO there is no point getting a HANS but then using a fixed back seat with no lateral support for your neck. IMO you want a seat with lateral neck supports - so in case of side impact, you head isn't going to go far and snap your neck off.

Here's an example of one I prepared earlier:
Image

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dbz
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Re: Seats and harnesses

Postby dbz » Fri Jan 15, 2016 4:28 pm

Thanks for all the responses guys. Lot to think about 're cost and practicality etc. Might work out cheaper just buying a more supportive adr approved seat and be done with it. Harness bars are pretty expensive yeh? Got quoted $300+ for a Sparco 3" harness. A proper race seat with lateral head supoorts will be over $1000. Plus HANs and Helmet to suit = $$$.
MY15 BRZ (Clubman Class) PBs: PI-1:49.7 Winton-1:36.1 Sandown- 1:26.0
MY15 BRZ (Street Class)
PBs: PI-1:54.7 Winton-1:39.9 Sandown-1:29.4 Broadford-1:08.5

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blackrex
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Re: Seats and harnesses

Postby blackrex » Mon Jan 18, 2016 8:08 am

Talk to Andy at Trackart (formally Meridian Motorsports Fabricator) regarding harness bars. http://www.trackart.com.au/fabricationharnessbars.htm
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dbz
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Location: Melbourne

Re: Seats and harnesses

Postby dbz » Mon Jan 18, 2016 3:32 pm

Thanks blackrex, i think i am either going all in - Cage, harness, race seat or nothing at all for safety and legal reasons being a street car. So i am just getting a more supportive ADR approved, street friendly seat that will hold me in better during high lateral Gs. From what i have read, its just unsafe going half arsed, a bit of this, and a bit of that, and that its actually safer to have a 3 point belt and oem seat than a harness bar+5/6 point harness+race seat, in a rollover. hmmm When i have a race only car its definitely all in.
MY15 BRZ (Clubman Class) PBs: PI-1:49.7 Winton-1:36.1 Sandown- 1:26.0
MY15 BRZ (Street Class)
PBs: PI-1:54.7 Winton-1:39.9 Sandown-1:29.4 Broadford-1:08.5

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bazzasti
Impreza 22B Driver
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Joined: Sat Mar 01, 2008 8:26 am

Re: Seats and harnesses

Postby bazzasti » Mon Jan 18, 2016 4:07 pm

For interest sake, ANDRA changed their rules recently to allow cars down to 10.00 seconds run with no cage as long as the car was based on 2008+. This is due to the increased safety in newer cars. Given you car is very modern and safe, maybe a really good helmet and neck support (there are other options available) will do the trick.

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dbz
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Location: Melbourne

Re: Seats and harnesses

Postby dbz » Mon Jan 18, 2016 5:24 pm

bazzasti wrote:For interest sake, ANDRA changed their rules recently to allow cars down to 10.00 seconds run with no cage as long as the car was based on 2008+. This is due to the increased safety in newer cars. Given you car is very modern and safe, maybe a really good helmet and neck support (there are other options available) will do the trick.


That's interesting news and good to know Bazza, thanks. What are some of the other neck support options you talking about? I think i have heard of someone mentioning go kart neck braces, are they allowed and cheaper than a HANs?
MY15 BRZ (Clubman Class) PBs: PI-1:49.7 Winton-1:36.1 Sandown- 1:26.0
MY15 BRZ (Street Class)
PBs: PI-1:54.7 Winton-1:39.9 Sandown-1:29.4 Broadford-1:08.5

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