The Dallara SF19 is an open-wheel single-seater chassis produced by Dallara for use in the Japanese Super Formula championship. It debuted in 2019, replacing the Dallara SF14 chassis. Throughout its production, it was the sole chassis used in Super Formula, however an engine development war between Honda and Toyota can lead to significant performance differences between the Honda and Toyota powered models.[2]
 Toyota-powered SF19 of Rookie Racing in 2020 | |
| Category | Super Formula |
|---|---|
| Constructor | Dallara |
| Predecessor | Dallara SF14 |
| Successor | Dallara SF23 |
| Technical specifications[1] | |
| Chassis | Sandwich Carbon/aluminium honeycomb structure designed by Dallara [citation needed] |
| Suspension (front) | Pushrod with torsion bar |
| Suspension (rear) | Pushrod |
| Length | 5,233 mm (206 in) |
| Width | 1,910 mm (75 in) |
| Height | 960 mm (38 in) |
| Wheelbase | 3,115 mm (123 in) |
| Engine | Honda HR-417E or Toyota RI4A, 2.0 L (122 cu in), I4, Turbocharged (supplied by Garrett), mid-mounted |
| Transmission | Ricardo 6 forward + 1 reverse semi-automatic paddle-shift |
| Weight | 670 kg (1,477.1 lb) (including driver) |
| Fuel | super-unleaded 100 RON [citation needed] |
| Brakes | Calipers: Brembo (carbon) Discs: Brembo (carbon) |
| Tyres | Yokohama Advan (front: 270/620-R13, rear: 360/620-R13) |
| Competition history | |
| Notable entrants | All Super Formula entrants |
| Notable drivers | All Super Formula entrants |
| Debut | 2019 Super Formula Suzuka round |
History
editThe single-seater was introduced in October 2017, on the Suzuka Circuit, and is the only one admitted to the Super Formula championship, the most important open-wheel racing car championship in Japan, starting from the 2019 season.[3]
The first run of the car took place in June 2018, at the Autodromo Riccardo Paletti in Varano de' Melegari, with the Japanese driver Tomoki Nojiri at its head. The driver completed 71 laps and also achieved a track record of 57 seconds, two seconds faster than the previous limit set by a LMP1 car. The first two cars produced were then shipped to Japan, for tests on Fuji Speedway.[4] Nojiri, tests in at home, completed 129 laps, in two days, even if only on the second day he was able to fit dry tires after the rain of the first day. The time obtained, 1'26"173, is two seconds lower than the pole position of 2017, obtained from the SF14.[5] During the tests carried out in August, Nojiri also tried a new display model, placed on the helmet visor.[6]
Technical specifications
editThe car, compared to the SF14, is based on greater use downforce generated by the underfloor, shifting the balance from the wings to ground effect, in order to increase the chances of overtaking. The appearance is more similar to that of an F1 car, with a fin on the hood, and of the more pronounced sidepods.[3] The Halo is not foreseen in the original project, but Dallara has studied the possibility of its presence.[5]
The Honda and Toyota engines are derived from the ones used in the Super GT series, and are 2.0-litres in displacement, with fuel limiter and push to pass system.[7]
References
edit- ^ "Super Formula Series Outline". Archived from the original on 15 February 2018. Retrieved 19 April 2019.
- ^ "16番グリッドから6位の山本尚貴、本番での"エンジン差"を痛感した平川亮。タイトル候補たちの開幕戦 | スーパーフォーミュラ | autosport web". AUTO SPORT web (in Japanese). 5 April 2021. Archived from the original on 17 April 2021. Retrieved 17 April 2021.
- ^ a b Marco Cortesi (21 October 2017). "Presentata la Dallara SF19-Obiettivo: più sorpassi". italiaracing.net. Archived from the original on 7 September 2018. Retrieved 7 September 2018.
- ^ Rachit Thukral (16 June 2018). "New Super Formula SF19 car completes first shakedown running". autosport.com. Archived from the original on 7 September 2018. Retrieved 7 September 2018.
- ^ a b Rachit Thukral (5 July 2018). "Super Formula to test halo with next-gen SF19 car". motorsport.com. Archived from the original on 7 September 2018. Retrieved 7 September 2018.
- ^ Rachit Thukral (15 August 2018). "Super Formula team tests innovative visor display". motorsport.com. Archived from the original on 7 September 2018. Retrieved 7 September 2018.
- ^ "SF 19: il nuovo bolide Dallara per il Giappone". parma.repubblica.it. 21 October 2017. Archived from the original on 7 September 2018. Retrieved 7 September 2018.