The red machine is an Avid Flyer. A Dean Wilson design which was the first (1983?) of the light cabin machines, originally designed with a 503 Rotax. He copied the wing folding design off a 30's aircraft. It evolved up to the Avid Magnum. Dean Wilson was taken on as a partner in the early days, he left then started Kitfox, virtually the same aircraft as an Avid.
Dean Wilson designed quite a few aircraft, Elipse, Global Explorer and Eagle DW1 Ag biplane.
28-482 was an Avid speedwing, a clipped wing version of the stol design. It cruised at 90 knots with a 582 Rotax. I think it was the first 28 aircraft on the AUF register.