The Cooper T23, formally called the Cooper Mk.II, is a Formula 2 racing car, built, designed, and developed by British manufacturer Cooper Cars in 1953. It also competed in Formula One, in 9 Grand Prix between 1953 and 1956. It was powered by the Bristol six-cylinder 2-litre engine.[1][2][3][4]
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| Category | Formula One, Formula Two | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Constructor | Cooper Car Company | ||||||||
| Designer(s) | Owen Maddock | ||||||||
| Predecessor | Cooper T20 | ||||||||
| Successor | Cooper T24/Cooper T41 | ||||||||
| Technical specifications | |||||||||
| Chassis | Steel spaceframe | ||||||||
| Suspension (front) | Lower wishbone, transverse leaf spring and damper | ||||||||
| Suspension (rear) | Lower wishbone, transverse leaf spring and damper | ||||||||
| Axle track | 1,168 mm (46.0 in) (front), 1,175 mm (46.3 in) (rear) | ||||||||
| Wheelbase | 2,268 mm (89.3 in) | ||||||||
| Engine | Bristol BS1 1,971cc straight-6, naturally aspirated, longitudinally mounted, front-engine, rear-wheel-drive layout | ||||||||
| Transmission | Bristol 4 speed manual gearbox. | ||||||||
| Weight | 471 kg (1,038 lb) | ||||||||
| Brakes | Drum brakes all round | ||||||||
| Tyres | Dunlop | ||||||||
| Competition history | |||||||||
| Notable entrants | Cooper Car Company | ||||||||
| Notable drivers |  Ken Wharton Bob Gerard | ||||||||
| Debut | 1953 Argentine Grand Prix | ||||||||
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Development
editWith the Cooper T23, which was also known as the Cooper-Bristol Mk.II, Cooper was able to draw on some experience in single-seater racing car construction. The car had a lightweight tubular frame and a body built with aerodynamics in mind. The engine got its cooling air from two cooling blocks that were installed in the front end. The exhaust gases were discharged laterally through two pipes. There are no similar vehicles from the T23. Changes were made to each new car and only the two works cars received a Bristol engine.[5][6]
A version with De Dion rear axle and Alta engine was built for Stirling Moss, and at least two other Alta-engined cars were built, but they were no more successful than the Bristol-engined car.[7][8][9] This variant is known as the Cooper T24.
Racing history
editThe Cooper T23 competed in 9 Grands Prix between 1953 and 1956. John Barber was the first to drive it, on behalf of Cooper Car Company, at the 1953 Argentine Grand Prix. Qualified in sixteenth position, he finished eighth.
Bob Gerard, in a private capacity, was the last driver to use the single-seater, in the 1956 British Grand Prix. Qualified in twenty-second place, he finished eleventh.
Ken Wharton, who entered on a private basis, obtained the best result behind the wheel of this car, finishing seventh in the 1953 Swiss Motor Grand Prix where he qualified in ninth place.
The car was overall unsuccessful. In the Drivers' Championship, Bob Gerard and Ken Wharton failed to score points in 1953. Only in Australian Formula Libre racing has Jack Brabham achieved some good results with the T23.
Formula One World Championship results
edit(key) (results in bold indicate pole position; results in italics indicate fastest lap)
| Year | Entrant | Engine | Tyres | Driver | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1953 | Cooper Car Company | Bristol BS1 L6 | D | ARG | 500 | NED | BEL | FRA | GBR | GER | SUI | ITA | |
| John Barber | 8 | ||||||||||||
| Ken Wharton | 8 | ||||||||||||
| Ken Wharton | Ret | Ret | 7 | NC | |||||||||
| F.R. Gerard | Bob Gerard | 11 | Ret | ||||||||||
| R.J. Chase | Alan Brown | Ret | |||||||||||
| Equipe Anglaise | Ret | 12 | |||||||||||
| Helmut Glockler | DNS | ||||||||||||
| Rodney Nuckey | Rodney Nuckey | 11 | |||||||||||
| 1954 | R.J. Chase | Bristol BS1 L6 | D | ARG | 500 | BEL | FRA | GBR | GER | SUI | ITA | ESP | |
| Alan Brown | DNS | ||||||||||||
| Gould's Garage | Horace Gould | 15 | |||||||||||
| F.R. Gerard | Bob Gerard | 10 | |||||||||||
| Ecurie Richmond | Eric Brandon | Ret | |||||||||||
| Rodney Nuckey | DNS† | ||||||||||||
| 1956 | F.R. Gerard | Bristol BS1 L6 | D | ARG | MON | 500 | BEL | FRA | GBR | GER | ITA | ||
| Bob Gerard | 11 |
† Nuckey was awarded a starting position despite not only not having practiced, but also not having a car to drive - Brandon drove the car.
References
edit- ^ "1953 Cooper T23 MKII technical and mechanical specifications".
- ^ "Cooper T23 • STATS F1".
- ^ "1953 Cooper T23 Bristol Mk II - Images, Specifications and Information".
- ^ "1953 Cooper T23 Bristol Mk II Specifications". Ultimatecarpage.com. Retrieved 2022-06-10.
- ^ "The Cooper T23, its Bristol/BMW engine and Spaceframe chassis…". primotipo... 2017-02-24. Retrieved 2022-06-10.
- ^ "1953 Cooper T23 MKII". conceptcarz.com. Retrieved 2022-06-10.
- ^ "Cooper T23". Retrieved 25 June 2022.
- ^ "1953 Cooper T23 Gould". 22 April 2020.
- ^ "Bonhams : 1954/1988 Cooper-Bristol T23 Formula 2 Single-Seater Chassis no. CB/1/88".