Chapter Meetings

Chapter Meetings
When Second Tuesday of the month at 7PM
Where Thun Field (KPLU) CAP building

Thursday, November 5, 2015

Mark Owens - Project Update

I really like sitting in luxury leather seats.  I usually get to sit in them in cars.  The car manufacturers have expended significant research in making a set that is really comfortable and many have even used high quality leather.  Car seats cost money unless of course you look at 15 year old cars then they are nearly free or maybe they are free.  The problem is that they are 15 years old and probably worn out but wait,  what do I see in the rear view mirror,  the back seat and it has almost never been used.     I have access to a 1997 Saab with black leather,  a 1998 Cadillac with tan leather, a 1999 BMW with gray leather and a 1996 Oldsmobile with green leather all for free. It is so hard to choose.

Quick measurements show that the Saab seat back will fit across the Glasair II without modification.  Well not really.  It does fit across without modification but is 6 inches to tall, needs a notch removed from the center to go around the console and then the seat bottom will need a lot of modification.   All of the other cars are wider so the seat back will take more work.  The seat bottoms will require significant modification no matter which is selected.
 
 I am not sure that I want the black leather but I don’t have to keep it if I don’t like it so I get to work. I pulled the back seats from the Saab,  not quite as easy as I expected.   The bottom seat came out easy,  just 2 bolts.  The seat back was a little more complicated. This is a convertible model, one side of the seat back was already loose or it came loose,  I am not sure but the other side was latched and I could not get to the mechanism to release it so I cut through the plastic, pulled the scrap away and noticed that the latch for the passenger side is controlled from the driver’s side and there is a little slot that almost looks like a keyhole.  I picked up the key, slid it in and the seat popped loose.   2 more bolts on the bottom hinges and the seat back is free.  The seats weighed a ton that is not good; the back had a full metal frame and ½ inch plywood.  It took a few minutes to separate the frame and plywood and most of the weight was gone.  The upholstery was held onto the foam with metal rings around a full wire frame that seem to zigzag back and forth through the foam.  Using an air powered cutoff wheel I carefully cut the rings and wires , pulled the leather from the padding and then removed all of the 1/8 metal wire frame from the foam.  As the seat back was 6 inches to tall it needed to be cut.  Foam rubber is sometimes a fun thing to cut.  I found that with a very careful use of a crosscut saw that I could cut a straight line in the foam.   Then I notched the bottom center of the seat back with the saw and a razor knife.  It now fits around the center console.  Without the metal, plywood, frame and wire, the back fit perfectly into the Glasair II and now weighs almost nothing.  

The lower seat bottoms required a little more work.   The Glasair II has separate bucket seat bottoms that fit right into the wing and the foam had to be carved to fit into the seat pans and between the console and airplane sides.  So after removing upholstery and wire structure from the lower seat; I measured the Glasair seat pans and cut center sections from the foam to match the seat pan width with the crosscut saw.  Then using an air grinder with a cutoff wheel, I carefully sculpted the foam to fit the seat pans and cut it down so it was much thinner.   The Saab rear seat resembled a bench seat so I just cut the leather upholstery right in half and wrapped the newly sculpted foam and wished that I had a little more material to work with it as it does not wrap all the way around.  For test fitting, I pulled out a roll of duct tape and with careful application the seats are tucked in and I get to sit on my new upholstery.  Proper completion will require some Velcro to replace the duct tape and a little sewing. 

I sat in the Glasair II for 20 minutes just enjoying the comfort.  The seats are still black and I am still not sure that I want black seats but they feel so good and the current investment is $0.

Time to get back to work on the electrical systems….




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