The Cassutt Special is a single-seat sport and racing aircraft designed in the United States in 1951 for Formula One air races. Designed by ex-TWA captain Tom Cassutt, it is a mid-wing cantilever monoplane with fixed tailwheel undercarriage. The fuselage and tail are of fabric-covered steel tube construction, and the wings are built from plywood over wooden ribs. An updated taper-wing design was first flown in 1971 on Jim Wilson's "Plum Crazy". The aircraft is built with a 4130 tubular steel spaceframe fuselage and a plywood-skinned wing with solid spruce spar and built-up ribs. The design lends itself well to modification, there being several different wing options of wood or composite construction. Several different tails have been built, including T-tails. The standard engine used for competition is the 100 hp (75 kW) Continental O-200, while other, lower-powered engines can be used for recreational flying, including the other small Continental A65 and Continental C90. Cassutt Aircraft discourages the use of auto conversions or larger Lycoming engines. Lycomings have been successful in several builds but the increased weight rarely gives the desired performance boost. Plans and parts were last available from Creighton King in Utah, for amateur construction. King also offered plans for the Stockbarger tapered wood wing. King has since withdrawn the plans from the market. Variants Cassutt I Developed in 1951, First race at Dansville, New York in 1954. Cassutt II Casutt IIM 13.67 ft (4.2 m) wingspan Cassutt IIIM 15 ft (4.6 m) wingspan Cassutt IIIM Sport 17.00 ft (5.2 m) wingspan
