RE: Sport Twin Pics
Hi Ed,
The Sportster has 1 rib added to the outboard edge of each wing, about 3" per side. The sheeting in the center is extended out 1 rib to allow room to attach the nacelles. The center is fiber glassed from nacelle to nacelle. It fly’s great, even single engine. You can take off in about 4 feet, pull to vertical and accelerate straight up.
Jim