The Aston Martin RB6 is a 2.5-litre, naturally-aspirated, inline-6 racing engine, developed and designed by Aston Martin for Formula One racing; used between 1959 and 1960.[2] The RB6 also shared the basic double-overhead camshaft straight-6 Aston Martin engine design with its brethren, but sleeved to reduce its capacity to 2.5-litres. Although Tadek Marek's design was a reliable and powerful unit in its 3.7-litre road car form, the reduced capacity racing motor was hard-pressed to cope with the heavy chassis and poor aerodynamics, and frequent engine failures blighted the DBR4's brief racing career. Aston Martin claimed a 280 bhp (210 kW) output for the DBR4's engine. However, it was common practice at the time to overquote engine power, and a more realistic value is closer to 250 bhp (190 kW). This value is still higher than that provided by the Coventry Climax FPF straight-4, used by contemporary manufacturers such as Lotus and Cooper, but the Aston Martin engine weighed appreciably more. The engine drove the rear wheels through a proprietary David Brown gearbox, provided by Aston Martin's owners.[3][4][5]
| Aston Martin RB6 | |
|---|---|
| Overview | |
| Manufacturer |  Aston Martin |
| Production | 1959–1960 |
| Layout | |
| Configuration | 95° I-6, naturally-aspirated |
| Displacement | 2.5 L (153 cu in) |
| Cylinder bore | 83 mm (3.3 in) |
| Piston stroke | 90 mm (3.5 in) |
| Valvetrain | 24-valve, DOHC, four-valves per cylinder |
| Compression ratio | 9.8:1[1] |
| Combustion | |
| Fuel system | Carburetor |
| Oil system | Dry sump |
| Output | |
| Power output | 250–280 hp (186–209 kW) |
| Torque output | 208–235 lb⋅ft (282–319 N⋅m) |
| Dimensions | |
| Dry weight | 203 kg (448 lb) |
The DBR5's engine was smaller and lighter. The new engine modifications meant that the power output was finally close to the figure originally claimed by the Aston Martin workshop.[6][7][8][9][10]
Applications
editReferences
edit- ^ "Specifications of 50 famous racing engines up to 1994 - Page 9 - F1technical.net".
- ^ "Engine Aston Martin • STATS F1". Statsf1.com. Retrieved 5 November 2021.
- ^ "Bonhams : 1959 Aston Martin DBR4/250 Formula 1 Monoposto Re-creation Engine no. RB6/2501".
- ^ Patrice, Minol (28 May 2018). "The DBR4 Wasn't An F1 Champion, But This Particular Aston Chassis Still Has A Story To Tell • Petrolicious". Petrolicious.com. Retrieved 5 November 2021.
- ^ "A journey through Aston Martin's Grand Prix heritage". Aston Martin. Archived from the original on 21 October 2021. Retrieved 5 November 2021.
- ^ "Aston Martin DBR4".
- ^ "1959 Aston Martin DBR4 - Images, Specifications and Information". Ultimatecarpage.com. 18 March 2016. Retrieved 5 November 2021.
- ^ 2 min read (1 January 1970). "1957 Aston Martin DBR4 | Aston Martin". SuperCars.net. Retrieved 5 November 2021.
{{cite web}}: CS1 maint: numeric names: authors list (link) - ^ "The forgotten Aston Martin F1 car | Thank Frankel it's Friday | GRR".
- ^ "1959 Aston Martin DBR4 » Pendine Historic Cars". Pendine.com. 14 October 1984. Retrieved 5 November 2021.