Fred
Your headrest looks fantastic! I think it is the best solution I have seen
yet. Looking forward to seeing a lot more of it!
JR (Bob) Gowing UK Kit 327 in Oz
----- Original Message -----
From: "Fred Klein" <fklein@orcasonline.com>
Sent: Tuesday, December 04, 2007 7:12 AM
Subject: Europa-List: Shoulder harness restraint
PP
> Hi guys,
>
> Just wanted to share a solution to the issue of raising the shoulder
> harness restraint sufficiently to minimize the potential for spinal
> compression during a rapid deceleration event.
>
> This approach allows for one to sit upon the existing head rest while
> entering and exiting the aircraft, does not encroach upon the access to
> the baggage area, confines all forces to the CM rather than
> transferring them to the fuselage shell, and can easily be added to a
> completed and upholstered cockpit.
>
> Although the riser weighs but 10 oz., it is robust enough to withstand
> the compression load generated by a 1500# tension load on the straps
> measured at an angle of 90 degrees to the slope of the back of the
> headrest; testing was done using a 20 ton hydraulic press. Assuming an
> upper body wgt. of 100#, it would be good for 15 Gs.
>
> Comments appreciated!
>
> Fred
> A194
>
> PS: If anyone wants to duplicate this as a nice little winter project,
> I could be persuaded to put together some kits of the hot-wired foam,
> hinges, acft. plywood, and instructions...contact me off-list.
>
>
> --
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>
>
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8:34 PM
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