.jpg) Gijs van Lennep in the Iso–Marlboro FW at the 1974 Dutch Grand Prix | |||||||||
| Category | Formula One | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Constructor | Iso–Marlboro/Williams | ||||||||
| Designer(s) | John Clarke | ||||||||
| Predecessor | Iso–Marlboro FX3B | ||||||||
| Successor | Williams FW04 | ||||||||
| Technical specifications[1][2][3] | |||||||||
| Chassis | Aluminium monocoque, with engine as a fully stressed member. | ||||||||
| Engine | Ford Cosworth DFV 2,993 cc (182.6 cu in) 90° V8, naturally aspirated, mid-mounted. | ||||||||
| Transmission | Hewland FG 400 5-speed Manual. | ||||||||
| Weight | 576 kg (1,269.9 lb) | ||||||||
| Fuel | FINA | ||||||||
| Lubricants | FINA | ||||||||
| Tyres | Firestone (1973–1974) Goodyear (1975) | ||||||||
| Competition history | |||||||||
| Notable entrants | Frank Williams Racing Cars | ||||||||
| Notable drivers |  Arturo Merzario  Howden Ganley  Jacques Laffite  Gijs van Lennep | ||||||||
| Debut | 1973 Spanish Grand Prix | ||||||||
| |||||||||
| n.b. Unless otherwise stated, all data refer to Formula One World Championship Grands Prix only. | |||||||||
The Williams FW was a Formula One car used by Frank Williams Racing Cars during the 1973, 1974 and 1975 seasons. It was designed by John Clarke.
The car was initially designated in 1973 as the Iso–Marlboro IR and two examples started the season. One was destroyed in an accident at the 1973 German Grand Prix, and a replacement was built. When Marlboro and Italian sports car manufacturer Iso both withdrew their backing before the 1974 season, the two cars were renamed for 1974 as the Iso–Marlboro FW. Another example was completed during the 1974 season. These three surviving cars were renamed as Williams cars for 1975, and carried separate designations: FW01, FW02 and FW03, although the cars were of the same type.
- ^ "F1 technical". f1technical.net. Retrieved 24 December 2015.
- ^ "F1 technical". f1technical.net. Retrieved 24 December 2015.
- ^ "F1 technical". f1technical.net. Retrieved 24 December 2015.