Martin,
Your last three words ("under the legs") is the key to it.
By putting support under the legs, weight is taken off the pressure
points under the 'butt'.
Seats forms moulded intimately from expanding foam are fine for racing
cars, where you need to be held firmly against the chassis for
relatively short periods. In an aeroplane, there is a need to be able to
squirm around abit and shift weight to a more comfortable position on a
long flight. A tight fitting seat (despite feeling comfortable
initially) prevents this.
Duncan McF.
----- Original Message -----
From: MJKTuck@cs.com
To: europa-list@matronics.com
Sent: Thursday, May 03, 2007 2:33 AM
Subject: Europa-List: Seat Thoughts
Hi Folks,
My own experience of my seats is that when in the seated position for
an hour or so there is a definite pressure point right on my butt cheeks
mainly I think because my foam seat isn't quite thick enough or is too
soft. I end up feeling the flat floor of the glassed foam inserts
covering the pushrod tunnel.
I want to do it again as part of a refurb and think the best thing to
use is to determine what shape I would need for total (wrap-around)
support. Isn't there some way of sitting on a bag of polystyrene beads
and then sucking all the air out? I believe race car drivers custom fit
their seats somehow this way. Anyone know of a kit or something?
Once you have the basic shape you could get a better idea of what the
final shape ought to be. My guess is that given the posture you end up
with in a Europa there would be a lot more foam in the lumbar area (and
below) as well as under the legs.
My 2c worth.
Regards,
Martin Tuck
Europa N152MT
Wichita, Kansas
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