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Re: Europa-List: Seat Cushions

Subject: Re: Europa-List: Seat Cushions
From: Bud Yerly <budyerly@msn.com>
Date: Fri, 29 Oct 2010 17:09:58
Jim,
As most guys around here know I use Rob D'nick in Lakeland.  He is a 
certified upholsterer and reasonable.  Rob (actually Scott) and I will 
pick the foam type and density based on the sitting height and weight of 
the client.  Build the cushion with bolsters and then have the client 
sit in it for two hours in the shop as un-upholstered foam test 
cushions.  That is what makes a cushion choice that lasts for years, is 
your comfort.  

Aircraft foam is more expensive and heavier, but not always good for 
floatation.  Some like memory foam.  Very heavy and quite comfortable.  
I know Oregon Aero has some really comfortable cushions from this, but 
they weigh about 10 pounds per cushion.  I strongly suggest you base 
your criteria on the answers to the following questions:

Do I need floatation?
Do I need specialized fitting for my back or butt?
Do I need flame and gas resistance?
Will the foam hold up over time? 
How much does it weigh?.

Fitting questions:
After two hours, did it cut off my circulation?
Do I have any pressure points or hot spots?
Do the bolsters hold me reasonably centered and lined up with the 
rudders without undue pressure on my thighs, back, butt?

Most guys look at two inch foam and say yea make it from that, and it is 
OK, for short flights but most of the time not too comfortable for the 
long flight.  For my rear cushion, I only need about 3/4 inch of foam 
for my upper back (headrest area)  and a contour to fit my lumbar and 
the curvature of the cockpit with sockets for the wing pins.  I am only 
5-10 but 180 lbs, so my seat cushion is about 2 inches at the center to 
the bolster point (edge of my butt) and contours to 2.5 inches for the 
bolster to keep me in the seat with support on my sides...  Makes a nice 
pleat and roll foundation also.  Shorter guys may need 3 inches or go 
with the two and add a foam and glass booster when some tall guy wants 
to fly.  My back cushion starts at 4 inches and contours to fit my back 
and the bulkhead, then tapers as it rises  to 3/4-1 inch inch at the top 
of the back.  If you go with a full 2 inches on the back cushion, you 
may find it leans you more forward than you like.  

Many builders, myself included, just go purchase some foam based on the 
criteria above and take the bandsaw and some contact cement and 
fabricate a cushion to suite them.  Then take that to the upholsterer, 
or sew it themselves with excellent results.  Any seamstress sewing 
machine can do a cushion of cloth.  Leather and some vinyl's require an 
upholstery or sail makers sewing machine, so going to a pro is probably 
a good thing for a one time use.  I like a seam or zipper in the bottom 
or back of the cushion to allow me to open up the back and cut the foam 
out of the bottom if I have a pressure point because the foam is too 
thick or too firm in one spot.  This leaves a nice flat cushion and 
allows it to contour with weight on the cushion.  When you egress, the 
cushion flexes back leaving a good smooth looking seat.

Drive up to the shop one day and sit in some of the Europa's here with 
my test cushions.

Best Regards,

Bud Yerly
Custom Flight Creations, Inc.
www.customflightcreations.com<http://www.customflightcreations.com/>
(813) 653-4989


  ----- Original Message ----- 
  From: jimpuglise@comcast.net<mailto:jimpuglise@comcast.net> 
  To: Europa List<mailto:europa-list@matronics.com> 
  Sent: Thursday, October 28, 2010 6:26 PM
  Subject: Europa-List: Seat Cushions


  I had an upholsterer in today to look at making seats for my Europa.  
I have used Zolotone on the interior and my intent is to use snap in and 
velcroed seat cushions.  Couple of questions:  1) Have most builders 
used aircraft qualified foam?  He said it is easily available but a 
little heavier than marine foam.  2) have builders used 2 or 3 inch 
foam?  My guess is 2 inches.


  The plane came back from the painter yesterday and looks great. 


  Thanks --


  Jim Puglise A-283

  Punta Gorda, FL 


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