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Re: Europa-List: 5 Point Harnesses

Subject: Re: Europa-List: 5 Point Harnesses
From: Andy Draper <andy@europaaircraft.com>
Date: Fri, 14 Mar 2003 08:36:53

Hi Tony,

It could be done, but not quickly. I'd need to dig out the specc and get the 
calc's
done.  It's too crucial to not do properly.  My gut feeling is that 2 plies
would be insufficient but I expect that a 3mm 6082 T6 or better plate would
do.  Size to be calculated.

Regards
Andy

>>> Tony Renshaw <tonyrenshaw@ozemail.com.au> 03/13/03 10:35pm >>>

Andy,
Thanks for your input. Could you specify quickly a thickness and size please,
and whether 2 plies of BID would be enough to retain it?
reg
Tony Renshaw

>
>Dear Tony,
>
>Don't forget that you'll need to add a metal insert to the front face of the 
>thigh support.
>
>Regards
>Andy
>
>>>> Tony Renshaw <tonyrenshaw@ozemail.com.au> 03/13/03 11:43am >>>
>
>Gidday,
>I am working on my cockpit module and am wondering about a 5 point harness.
>I know some may think this overkill, but I fly an a/c now that only has a 4
>point, and there is a natural tendency as your shoulder harness tightens
>under load for your lapstrap to ride up above your hips. To achieve a safe
>outcome your lapstrap would have to be uncomfortably tight always. So, the
>problem arises in an impact where your abdomen is exposed to forces
>supposed to be contained by your lapstrap, but they aren't. So, I want to
>know if anyone has fitted a crutch strap and if so where it was mounted,
>either on the vertical face of the thigh support, or was it accomodated in
>the first 4-6" of the front portion of the thigh support on the seat long
>axis, or where? Any quick advice would be kindly appreciated.
>Reg
>Tony Renshaw
>Sydney Australia
>
>




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