The Wag Aero “2 + 2” model designation refers to the airplanes seating arrangement which means there are two seats in front and two seats in back. However the seats in back are really only suited for children of 12 years old or less or one adult passenger. The fuselage measures only 5 inches wider compared to a Piper Super Cub which makes one wonder why the Sportsman designer thought the extra five inches would allow side by side seating versus the tandem seating arrangement for the Super Cub,
I soon realized this cozy seating arrangement when I jury rigged a couple of front seats using cement blocks and 2 X 6 board seat backs and also placed a fabric sling in position for the back seat. I also made a cardboard template of the instrument panel and for the first time I could sit in the cockpit and feel for myself the interior layout of the aircraft.
I was struck with just how narrow the cockpit was. I immediately rechecked the plans to see if there was any error, but it checked out right. I then measured the interior width of my Cessna 172’s cockpit and was quite surprised to find it was only one inch wider than the Sportman. These measurements were taken at the width of the instrument panel. The major width difference between these two airframes is because the Cessna’s cockpit width remains mostly constant all the way down to the floorboard where as the Sportsmans cockpit width tapers down from 38 inches to 30 inches nominally, thus affecting the seat width. It was now no surprise why Wag Aero specified to remove 3 inches of seat/back width from a Cessna 172 seat and reweld them back together. Using standard Skyhawk seats would never have fit.
My concern for this ergonomic issue was not over and many months later I would develop a solution for this narrow width problem by designing special plexiglas bubble doors that would add 8 inches of interior elbow room to the cockpit without modifying the airframe. In later posts I will describe the tooling and fabrication methods used.