Here is what I did to move seats to the rear. Moved about 3". Still adequate space for rear passenger legs. I fly with my seat all the way forward. I am 5' 10".
Used 1/4" x 2" aluminum strip to make top upper brackets and form the under support brackets. I made the spacers out of other thickness bar stock aluminum. Units are light weight and very strong.
To: lml@lancaironline.net
Date: Thu, 20 Mar 2014 07:54:09 -0400
From: skinner3410@sbcglobal.net
Subject: [LML] Need to move front seats aft on a IV-P
Has anyone with a IV-P found a good way to move the front seats aft about 3-4 inches? I don't need the rear seat leg room, but I could use more in the front. Moving the rails rearward would cantilever them quite a ways behind the spar box. I haven't figured out how I would support the rear ends of the rails.
Dave Skinner
845CM