Read the research done by Dr Tony Segal in the UK amongst others. He test crashed real glider cockpits with dummy pilots fitted with accelerometers. The effects were impressive.
The value isn't in the thickness or density, but in it's behaviour AFTER impact. Comfor (and similar) deform relatively quickly absorbing the energy of the impact. BUT they take a very long time to release that energy back be returning to their normal shape. Traditional thick cushions absorb the energy quickly, but whilst the acceleration from the impact is still happening, they release that energy back again, INCREASING the force of the impact to your spine - you would normally be better without a cushion at all instead of a traditional one ! On 25 Aug 2014, at 22:08 , Plchampness <plchampn...@gmail.com> wrote: > I am still to be convinced of the value,of .Confor foam as a crash protective > material. It is a bit more dense than cushion foam, but not that much. The > spring back of cushion foam seems irrelevant to me. The issue Is > deceleration during impact. > > Most gilders have about 50mm gap between the seat and the lower shell. I > think more value could be obtained by inserting blocks of styrofoam or some > other crushable material in there. > > Yours > Peter Champness > > On Aug 25, 2014, at 7:29 PM, Ron Sanders <resand...@gmail.com> wrote: > >> www.bgashop.co.uk/index.php?_a=viewProd&productId=197 >> >> Ron S >> _______________________________________________ >> Aus-soaring mailing list >> Aus-soaring@lists.internode.on.net >> To check or change subscription details, visit: >> http://lists.internode.on.net/mailman/listinfo/aus-soaring > > _______________________________________________ > Aus-soaring mailing list > Aus-soaring@lists.internode.on.net > To check or change subscription details, visit: > http://lists.internode.on.net/mailman/listinfo/aus-soaring
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