|
| Chassis = Aluminium monocoque | Front suspension = Double wishbone, coil springs over dampers, anti-roll bar | Rear suspension = Double wishbone, radius arms, coil springs over dampers, anti-roll bar | Wheelbase = | Track = | Engine name = Ford-Cosworth DFV, | Capacity = , | Configuration = 90° V8, | Turbo/NA = NA, | Engine position = mid-engine, longitudinally mounted | Gearbox name = Hewland FG400 | Gears = | Type = Sequential manual transmission, | Differential = ZF differential | Weight = | Fuel = Elf | Tyres = Goodyear | Debut = 1976 Spanish Grand Prix | Races = 30 | Wins = 1 | Cons_champ = 0 | Drivers_champ = 0 | Teams_champ = 0 | Poles = 1 | Fastest_laps = 3 }} The Tyrrell P34 (Project 34), otherwise known as the "six-wheeler", was a Formula One race car designed by Derek Gardner, Tyrrell's chief designer. The car used four specially manufactured 10-inch-diameter (254 mm) wheels and tyres at the front, with two ordinary-sized wheels at the back. The six-wheel design reduced the drag which would have been caused by two larger front wheels, increased the total contact patch of the front tyres and created a greater swept area for the brake discs. ==Race history== Along with the Brabham BT46B "fancar" developed in , the six-wheeled Tyrrell was one of the two most radical entries ever to succeed in Formula One (F1) competition, and has specifically been called the most recognizable design in the history of world motorsports. It first ran in the Spanish GP in , and proved to be very competitive. Both Jody Scheckter and Patrick Depailler were able to produce solid results with the car, but while Depailler praised the car continually, Scheckter realised it would only be temporarily competitive. The special Goodyear tyres were not being developed enough by the end of the season. The P34's golden moment came in the Swedish Grand Prix. Scheckter and Depailler finished first and second, and to date Scheckter is the only driver ever to win a race in a six-wheeled car. He left the team at the end of the season, insisting that the six-wheeler was "a piece of junk!" For 1977, Scheckter was replaced by the Swede Ronnie Peterson, and the P34 was redesigned around cleaner aerodynamics, and some redesign on Peterson's car for his height. The P34B was wider and heavier than before, and, although Peterson was able to string some promising results from the P34B, as was Depailler, it was clear the car was not as good as before, mostly due to the tyre manufacturer's failure to properly develop the small front tyres. The added weight of the front suspension system is also cited as a reason for ending the project. Tyrrell even tried a "wide track" P34B to improve its handling, but this put the front wheels out from behind the nose fairings and reduced the aerodynamic gains from having four small front wheels. Thus, the P34 was abandoned for 1978. More recently the P34 has been a popular sight at historic racing events, proving competitive once more. This was made possible when the Avon tyre company agreed to manufacture bespoke 10-inch tyres for Simon Bull, the owner of chassis No. 6. In 1999 and 2000 the resurrected P34 competed at a number of British and European circuits as an entrant in the FIA Thoroughbred Grand Prix series. Driven by Martin Stretton, the car won the TGP series outright in 2000, the sister car repeating that success in 2008 in the hands of Mauro Pane; this example is today part of a private collection in Italy. Stretton also achieved numerous pole positions and class wins at the Grand Prix Historique de Monaco. The P34 has also been seen a number of times at the Goodwood Festival of Speed. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tyrrell P34」の詳細全文を読む スポンサード リンク
|