The design was initially based on concepts for a rear-sponsoned configuration by Ken Norris, who had worked with the Campbells on their 'Bluebird' designs. The design is of modular construction with the main body consisting of a front section with a steel spaceframe incorporating the engine, a Rolls-Royce Spey Mk.101, and the rear section a monocoque extending to the tail. The front sponsons are also modules, one of which contains the driver.
