Supermarine Aircraft Spitfire Aircraft company and produce all-Australian homebuild aircraft kits. In the event, the constant-speed, four-blade propeller would be obtained from a specialist firm in New Zealand. Supermarine Aircraft is not related to the original British Supermarine company, although the owners of the Supermarine marque have given their permission for the name to be used. The first production model was named the Spitfire Mk25 and was a 75% scale replica of the original Supermarine Spitfire design. The stressed skin structure consists of 2024 aluminium alloy skins, formers and longerons with some fibre-glass mouldings for parts such as fairings and air scoops. The
Supermarine Aircraft Spitfire British Light Aircraft Association. The company has since moved to Cisco Airport, Texas in the US, which O'Sullivan also manages. The prototype MK25 was initially fitted with a Rotax engine, before development progressed through a series of more powerful Jabiru types. Early production models were powered by eight-cylinder, Jabiru engines made in Australia. Subsequently, the company introduced a V6 Isuzu engine conversion, producing with supercharger, as well as a V8 General Motors automotive engine conversion producing . Early versions of the Spitfire MK26 used an eight-cylinder Jabiru 5100 horizontally opposed aero engine, but early installations suffered from inadequate cooling. The