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Frontal Head Restraints -MSA Guidance

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Mon Oct 12, 2015 7:29 am PostPost subject: Frontal Head Restraints -MSA Guidance
scottish scrutineer
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MSA have published guidance on the use of FHRs see:
https://www.msauk.org/assets/fhrguidance.pdf
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Mon Oct 12, 2015 9:19 am PostPost subject:
AK
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Mon Oct 12, 2015 9:18 pm PostPost subject:
UncleF
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Thanks!

I am correct in reading that the optimal position for the harness bar for the shoulder straps would be slightly below the harness slots in the seat then to create the 10 degree angle they reference?
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Mon Oct 12, 2015 9:30 pm PostPost subject:
chorlton
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MSA frontal head restraint guidance:

Wear a Hans.

The end
Laughing
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Tue Oct 13, 2015 12:03 pm PostPost subject:
scottish scrutineer
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UncleF wrote:
Thanks!

I am correct in reading that the optimal position for the harness bar for the shoulder straps would be slightly below the harness slots in the seat then to create the 10 degree angle they reference?


The belts should run down from shoulders to the bar at around 10 degrees max. The FIA guide linked in the MSA document is useful.
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Tue Oct 20, 2015 10:43 pm PostPost subject:
UncleF
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scottish scrutineer wrote:


The belts should run down from shoulders to the bar at around 10 degrees max. The FIA guide linked in the MSA document is useful.


Thanks for that!, had a good look at the guidance, glad I've not done a TD with harnesses before reading that.

I also found this Schroth guidance which is in a much more user friendly format for navigating around - http://www.schroth.com/installation-instructions/en/index.html
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Tue Jan 12, 2016 12:36 pm PostPost subject:
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i believe for saloons (mini/bmw etc...( its 20 or 30 degrees?
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Tue Jan 12, 2016 8:13 pm PostPost subject:
emicen
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andybell wrote:
i believe for saloons (mini/bmw etc...( its 20 or 30 degrees?


The HANS angle for MINIs/saloons would be 20 degrees but that's the angle between the yolk and the collar.

For shoulder straps on the harness, they should anchor behind the seat at 0-20 degrees below horizontal.

FIA guidelines:
https://www.fia.com/file/2059/download?token=JZgU_uNN

I haven't checked but I'd be surprised if the MSA guidance is different.
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Tue Jan 12, 2016 8:48 pm PostPost subject:
andybell
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sorry for being thick so for example http://www.demon-tweeks.co.uk/motorsport/fhr-hans-devices/hans-sport-ii-hans-device is fine? need to get that and helmet posts ordered
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Tue Jan 12, 2016 9:37 pm PostPost subject:
emicen
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Should be yeah, I'd say my seating position is pretty normal and mine is a 20 degree.
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Mon Jan 18, 2016 11:46 am PostPost subject:
scottish scrutineer
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andybell wrote:
sorry for being thick so for example http://www.demon-tweeks.co.uk/motorsport/fhr-hans-devices/hans-sport-ii-hans-device is fine? need to get that and helmet posts ordered


Andy, get in touch with Stevie Turner http://turnerautosport.com/ he has been supplying kit at good prices and giving advice on which to buy.
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Mon Jan 18, 2016 4:02 pm PostPost subject:
andybell
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good shout and reasonably local(ish)
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