Australian designer for Formula 1 driver Jack Brabham from 1962 until Brabham's retirement as a driver at the end of the 1970 season. Tauranac briefly owned and managed the Brabham team in 1971, but he sold the team to Bernie Ecclestone in late 1971. He remained in England to assist with a redesign of a Politoys Formula 1 chassis for Frank Williams in 1973. After a brief retirement in Australia, Tauranac returned to England to design the Ralt RT1 chassis to be raced in Formula 3, Formula 2 and Formula Atlantic. The chassis proved very successful, winning the European Formula 3 championship in 1975 in the hands of Australian driver Larry Perkins. The 1978 season also proved successful for the RT1 chassis, winning the European F3 championship for Jan Lammers. Tauranac designed the Theodore Racing F1 car for the 1978 season. The team was not very successful for various reasons largely unrelated to the quality of the chassis. Two new designs were created for the 1979 season, the RT2 for formula 2 and the RT3 for formula 3. The RT3 chassis proved highly successful, winning the 1983 European F3 championship for Pierliugi Martini and five consecutive British F3 titles. A joint venture with Honda resulted in the RH6 chassis which won the 1981, 1984 and 1985 titles. In October 1988 Taruranac sold the Ralt business to March Engineering for 1.25m UK pounds.