For Clark Still:

  I first flew my L-IVP with the seat covered with a couple layers of temperfoam and lots of duct tape.  It did the job.

Here are some ideas to consider before adding upholstry.   I welded a bracket for a headrest  on each seat before adding upholstry.  Also,  I added a rotating armrest on the copilots seat that I removed from a van.  When in place, it just fits between the two seats.   Also added two hardpoints to the back of the copilots seat to support a removable O2 bottle for my occasional night flight.

Most folks have used several layers of "Temperfoam" for the seat but measure the available space closely especially the height.  I had to modify my seat height after the seats were finished.(sob!!!)   Also, take into account the side panels.  There is not as much space in the L-IV as you might think .

Has anyone added enough pockets to the interior?.  I think not.  Also I made the rear seat back cushion a little higher than necessary as it forms a very nice space behind it  to hide stuff.  I also made the last 6 inches of the left side armrest removable just incase I ever had to remove the pressure bulkhead (and it turned out that it was necessary)  I was very glad that I did.

I  added a pressurized relief tube (from a T-33) under the front of the pilots seat. (I drink coffee while I travel)  and I installed a double bailout bottle (from an ejection seat) under the front of the copilots seat for emergency  letdown O2.

Hope you can use some of these ideas.

Best Regards,     Bill Hogarty  ( billhogarty@direcway.com)