Ralt was a manufacturer of single-seater racing cars, founded by ex-Jack Brabham associate Ron Tauranac after he sold out his interest in Brabham to Bernie Ecclestone. Ron and his brother had built some specials in Australia in the 1950s under the Ralt name (standing for Ron and Austin Lewis Tauranac). Tauranac won the 1954 NSW Hillclimb Championship in the Ralt 500. Cars Early Ralts Built with the assistance of Tauranac's younger brother, Austin, in Australia. The Mk was powered by a 1,932cc pushrod Norton ES2. Tauranac made his own flywheel, connecting rods, and cylinders. The Mk2 was a sports car built by and for Austin, with a Ford 10 engine, Standard 10 gearbox, and Morris 8 rear axle. The Mk3 was purchased from the Hooper brothers when they retired. Tauranac designed a new chassis for it, and the car was primarily driven by Austin. The Mk4 began as a special, using a Vincent-HRD V-twin and a de Dion rear suspension. The car took two years to develop in Tauranac's spare time. After just two events, somebody insisted on buying it, so plans were made for a production run of five. The Mk5 was planned by Austin as a Peugeot-engined car, but abandoned so he could assist Tauranac with the production Mk 4s. Modern Ralts Tauranac founded Ralt in 1974 and the first product was the RT1, a simple and versatile car used in Formula Two, Formula Three and Formula Atlantic racing between 1975 and 1978. In 1979, the RT2 was developed for Formula Two, with three cars being built for the Toleman team. Later, three more cars were built for private owners, including one exclusively for the revival of the Can-Am series. For 1980 Toleman built its own car, the TG280, which was based somewhat on the RT2 design; this was later built under licence by Lola as the T850 and further modified by Docking-Spitzley as the DS1. Two of the original Toleman RT2s were later raced in Can-Am, while the third ended up in South Africa, where copies called Lants were made. Related cars have appeared in hillclimb and sprint events in the UK as Romans and SPAs. The RT2 also provided the basis for three cars in other categories: the RT3 in Formula Three, the RT4 in Formula Atlantic (which was also occasionally raced in Formula Two), and the RT5 in Formula Super Vee. The RT4 was the