1950 Grand Prix motorcycle racing season 1950 Grand Prix motorcycle racing season The 1950 Grand Prix motorcycle racing season was the second F.I.M. Road Racing World Championship Grand Prix season. The season consisted of six Grand Prix races in five classes: 500cc, 350cc, 250cc, 125cc and Sidecars 600cc. It began on 10 June, with Isle of Man TT and ended with Nations Grand Prix on 10 September. Points were awarded to the top six finishers in each race. All rounds counted towards the championship in the 125cc and Sidecars, the best three races counted in the 250cc, while in the 350cc and 500cc championships, only the
1983 Australian Grand Prix 1983 Australian Grand Prix The 1983 Australian Grand Prix was a race for Australian Formula 1 cars held at Calder Park Raceway on 13 November 1983. It was the forty eighth Australian Grand Prix and the fourth to be held at Calder. The race was also the sixth and final round of the 1983 Australian Drivers' Championship. The title had already been secured by Alfredo Costanzo as he had been twenty points ahead of Andrew Miedecke after winning the previous event at Winton Raceway. Brazilian driver Roberto Moreno won his second Australian Grand Prix in three years. Local Ralt RT4