Worldwide Ultralite Spitfire
The Worldwide Ultralite Spitfire is an American ultralight aircraft that was designed by Fred Bell and manufactured by Worldwide Ultralite Industries and later by Don Ecker and Air Magic Ultralights of Houston, Texas. The aircraft was supplied as a kit for amateur construction. Design and development. The Spitfire is a derivative of the Phantom X1 that was created by former Phantom Aeronautics employee Fred Bell, who also designed the Bell Sidewinder. The Spitfire was designed to comply with the US FAR 103 Ultralight Vehicles rules, including the category's maximum empty weight of . The aircraft has a  standard empty weight of . It features a strut-braced high-wing, a single-seat, open cockpit, tricycle landing gear and a single engine in tractor configuration. The aircraft is made from bolted-together aluminum tubing, with the flying surfaces covered in Dacron sailcloth. The Spitfire differs from the X1 in having flaps, struts in place of cable-bracing, a centre stick and a cog-belt reduction drive. Its span wing is supported by "V" struts and jury struts. The pilot is accommodated on an open seat, partially enclosed by a fibreglass fairing with a windshield. The standard engine initially provided  was the Kawasaki 440 snowmobile powerplant of . The design pushes the empty weight limits set by FAR 103 and thus has to be built carefully and cannot be fitted with options if it is to be legally flown in this category. A two-seat version in side-by-side configuration was also produced by Air Magic Ultralights. Powered by a Rotax 503 two-stroke powerplant of , it has a gross weight of .