01/31/2012. Remarks by Walter van Tilborg: "This homebuilt two-seat sport design of Stanley N. Johnston of Wallacetown, Ontario, Canada, was more or less a scaled-up development of the pre-war Long Wimpie and two examples were constructed. The Special Model 4 was built using the undercarriage of a Taylorcraft light plane and the first example (CF-RDH) made the first flight in May 1962, after a fourteen year design and construction period. Wing slots and large flaps gave a STOL performance.
The original 85 hp Continental C85 was soon replaced by an 108 hp Lycoming O-235. After the aircraft was lost in an accident, a second very similar aircraft was completed by Johnston in June 1969, with a 90 hp Franklin engine and a slightly larger wing span. Initially registered CF-WRH this aircraft changed hands a number of times, was reregistered C-FWRH, while on September 25, 1995, it returned to the Johnston family. Its current status is unknown."