Dome F110
CategoryFormula 4
ConstructorDome
PredecessorToray Carbon Magic MCS4-24
Technical specifications
ChassisCarbon fibre monocoque
EngineTOM'S Toyota TZR42 Inline-4 NA, 16-valve, DOHC
TyresDunlop
Competition history

The Dome F110 is an FIA Formula 4 standard formula car manufactured and marketed by Dome Corporation in collaboration with the Japan Motor Racing Industry Association (JMIA).[1] Since the 2015 season, it has been used as the sole car in the Japanese F4 Championship.

Summary

Until now, Formula 4 (F4) has been a regional category started voluntarily by local organizations and clubs, such as JAF-F4, but in 2014, the Fédération Internationale de l'Automobile (FIA) set guidelines for F4 standards and made it a global rule. At the time, JMIA President Minoru Hayashi was concerned about this and worried that Japanese-made entry-level racing cars would be eliminated and replaced by foreign-made cars from Western countries that had passed the FIA standards. Therefore, he tried to prevent this by developing a Japanese-made FIA-F4 as JMIA and partnering with the GT Association, but at the same time he was criticized by the organizations involved in JAF-F4.

The development process was done in collaboration with JMIA member companies, with the engine built by TOM'S and the gearbox by Toda Racing, while Toyota Motor Corporation provided support through Toyota Technocraft."[2]

In 2016, the ADR (Accident Data Recorder) and throttle failure safety were updated.

In 2017, the 6kJ tether and headrests and seats were updated in line with FIA rule changes.

In 2018, the FIA regulations were revised following an accident at a championship in another country (the vehicle was not company-owned), with the addition of front anti-intrusion panels and an updated rear structure. After the addition of this equipment, the minimum weight for the Japanese series was raised to 610 kg (1,340 pounds).

Due to revised FIA safety standards, conventional vehicles will no longer be allowed to be used after 2023, so the F110 will also cede its place to its successor, the MCS4-24 (built by Toray Carbon Magic), after that year.

Specifications

TOM'S Toyota TZR42 engine

As of 2015.[3]

  • Overall length: 4,340 mm
  • Overall width: 1,738 mm
  • Height: 950 mm (from reference plane)
  • Wheelbase: 2,750 mm
  • Wheelbase: 1,500 mm front / 1,460 mm rear
  • Weight: 610 kg (1,340 lb) (including drivers)
  • Tyres: Dunlop 195/550R13 (front) / 240/570R13 (rear)
  • Wheels: TWS Forged aluminum, 8J-13 front / 10J-13 rear
  • Engine: TOM'S Toyota TZR42 DOHC 16-valve Variable valve timing Electronic throttle
  • Capacity: 1,987cc
  • Bore stroke: 80.5 mm x 97.6 mm
  • Maximum output: 160 PS at 5,800 rpm
  • Clutch: 7.25-inch AP single plate
  • Electrical components: R&Sport ECU
  • AIM display/data logger
  • Monocoque: FIA-approved carbon monocoque/front and rear impact structure
  • Body and floor: Fibreglass
  • Suspension: Double wishbones/Pushrod-on uprights/Twin shocks/anti-roll bar
  • Brakes: ADVICS two-pot calipers/ventilated discs
  • Aerodynamic devices: Front single element wing/garnier wing, rear twin element wing
  • Gearbox: Toda Racing 6-speed sequential paddle shifters
  • Safety equipment: FIA-approved 6-point harness/safety headrests/FIA FT3-1999 regulation safety fuel cell/front and rear 6kJ tethers

Derivative models

In March 2019, it was announced that the F110 monocoque and key components would be used to supply the chassis for the EV race car."[4]

In January 2020, the concept of the ERA Electric Racing Academy Championship series was announced, with a one-make chassis called the 'Mitsu-Bachi' F110e, which is based on the F110 chassis. The series will be based on the F110 chassis and will feature a one-make chassis called the 'Mitsu-Bachi' F110e, with a total of four rounds planned in the second half of 2020 in the UK, Belgium and the Netherlands.[5]

References

  1. ↑ FIA-F4とは - 童夢HP
  2. ↑ トヨタ自動車、2014年のモータースポーツ活動および支援計画を発表 - トヨタ自動車・2014年1月30日
  3. ↑ FIA-F4 2015年 レース車両解説 - ToyotaGazooRacing HP・トヨタ・ヤング・ドライバーズ・プログラム／FIA-F4
  4. ↑ "EVフォーミュラ入門カテゴリーが20年夏スタート。童夢F110を採用". Motorsport.com. 2019-03-28.
  5. ↑ "童夢製F4シャシーをベースにした新ジュニアEV『ERAチャンピオンシップ』発足へ". autosport web. Retrieved 2020-01-14.


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