land-speed
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Seat Padding

To: land-speed@autox.team.net
Subject: Seat Padding
From: Elon Ormsby <ormsby1@llnl.gov>
Date: Mon, 14 Apr 2003 14:51:18 -0700
The rule change was due to an accident.  It was never fully explained but 
my guess is that if a seat is much thicker than one inch the 
compressibility creates too much slack in the safety harness and may 
contribute to problems.  3 or 4 inches of foam, compressed to nothing in a 
high G accident would, would give way too much slack in the harness to hold 
you in position.

Aircraft Spruce ( http://www.aircraftspruce.com )  sells special, flame 
proof, foam for the experimental aircraft community.  All the builders rave 
about it.  -Elon

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