Ralt RT1

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.

As a constructor, Tauranac acquired a reputation for building safe, simple, strong cars that were manufactured to very high standards—he tended to invest his firm's profits in high-quality machine tools and Ralts acquired an enviable reputation as the best-built "customer" cars of their era.

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 1,000 cc (61 cu in) 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.

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.

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