 Henry Surtees driving at the2009 Brands Hatch Formula Two round. | |||||||
| Designer | Williams Grand Prix Engineering | ||||||
|---|---|---|---|---|---|---|---|
| Technical specifications[1] | |||||||
| Wheelbase | 2,885 mm (113.6 in) | ||||||
| Engine | Audi 1.8-litre 4cyl 20v Turbo[2][3] | ||||||
| Transmission | 6-speedHewland TMTsequentialpaddle shifttransaxle withLSD and hydraulic actuation[4] | ||||||
| Weight | 570 kg (1,257 lb) (dry weight) | ||||||
| Competition history | |||||||
| Debut | 2009 Valencia Formula Two round | ||||||
| Last event | 2012 Monza Formula Two round | ||||||
| |||||||
| Teams' Championships | 3 | ||||||
| Drivers' Championships | 3 | ||||||
TheWilliams JPH1 is an open-wheel racing car developed by British manufacturerWilliams for use in theFIA Formula Two Championship.
The car was presented on 2 March 2009 in Fawkham (Great Britain, Kent) at theBrands Hatch track, where on the same daySteven Kane -BTCC driver drove it on the track for the first time.[5]
Named after bothJonathan Palmer andPatrick Head, the Williams JPH1chassis and survival cell is ofcarbon fibre compositemonocoque construction.[1]
Theinternal combustion engine is a newturbochargedpetrol engine based on theAudi 1.8-litre 20 valve block and head,[2][3][1][6] as used inFormula Palmer Audi. Whereas the engine in the FPA car primarily uses standardroad car components, the Audi F2 engine has been developed as a pure race engine.[1] Prepared and built byMountune Racing,[6] thecrankshaft,connecting rods,pistons,valves andcamshafts are all-new components designed for high strength and light weight. Thedry sump system has been re-designed so the engine sits 35 millimetres (1.4 in) lower than in the FPA car.
The turbocharger is an all newGarrett GT35 unit featuringroller bearings for improved response, with an external wastegate with high speed closed loop pneumatic valve boost control for absolutely precise automatic boost control. The engine management system is aPi Research Pectel electronicengine control unit (ECU), the MQ12,[1] which has more capability than the unit in FPA.
For its initial2009 season, continuous maximum engine power was 400brake horsepower (298 kW; 406 PS) at 8,250 rpm.[1] The F2 car features a "push to pass/defend" overboost, with 450 brake horsepower (336 kW; 456 PS) being available for a maximum duration of 6 seconds, available ten times during each race.[1] From2010, continuous base power was increased to 425 brake horsepower (317 kW; 431 PS), with an even higher gain from overboost to 480 brake horsepower (358 kW; 487 PS).
Thetransmission is a new unit designed byHewland specifically for Formula Two, the TMT.[4] It has six forward speeds, and is operated by steering wheel mounted paddle shifters.[1]
The car was quite substantially upgraded by both Williams andMotorSport Vision for the 2010 season. The new model came to be called the Williams JPH1B.
Aerodynamic changes were the main thing made to this version. This meant that the car's maximum downforce increased by 30 percent and the aerodynamic efficiency increased by 24 percent. The aerodynamics package, with front and rear wings, was also updated, among other things to make the air flow better under the car. It also meant that there were more downforce levels to experiment with for drivers and engineers. They also increased the size of the front tires and started using a softer rubber compound, to get better grip and better performance. An upgraded differential provided better stability into and through curves. The water system was changed to improve cooling. Compared to a Formula 3 car's 794 kilograms of downforce at 241 km/h, the JPH1B is over 907 kilograms.[7]
Engine power had been increased from 400 bhp to 425. When using "push-to-pass" engine power was now 480 bhp. This was increased even more for the 2011 season. Now instead you get 500bhp at "push-to-pass", which is 75 more than in standard mode.
Both versions used a Hewland six-speed semi-automatic sequential gearbox, which is regulated using paddles behind the steering wheel.[8]
