Maserati 250F
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The Maserati 250F was a racing car made by Maserati of Italy used in '2.5 litre' Formula One racing between January 1954 and November 1960. Twenty-six examples were made.
Mechanical details
The 250F principally used the SSG, 220 bhp (at 7400rpm) Template:Cvt capacity Script error: No such module "convert". Maserati A6 straight-six engine, ribbed 13.4" drum brakes, wishbone independent front suspension, a De Dion tube axle, Borrani 16" & 17" wheels and Pirelli Stella Bianca tyres. It was built by Gioacchino Colombo, Vittorio Bellentani and Alberto Massimino; the tubular work was by Valerio Colotti. A streamlined version with bodywork which partially enclosed the wheels (similar to the 1954 Mercedes-Benz W196 "Typ Monza") was used in the 1956 French Grand Prix.[1]
| Technical data | 250F | 250F T2 |
|---|---|---|
| Engine: | Front mounted 6-cylinder in-line engine | Front mounted 60° 12 cylinder V engine |
| displacement: | 2493 cc | 2491 cc |
| Bore x stroke: | 84 x 75 mm | 68.7 x 56 mm |
| Max power at rpm: | Template:Cvt at 8,000 rpm | Template:Cvt at 9,300 rpm |
| Valve control: | 2 overhead camshafts, 2 valves per cylinder | |
| Carburetor: | 3 Weber 45DCO3 | 6 Weber 35IDM |
| Gearbox: | 4/5-speed manual, transaxle | |
| suspension front: | Double wishbones, coil springs, hydraulic shock absorbers | |
| suspension rear: | De Dion axle, transverse leaf springs, hydraulic shock absorbers | |
| Brakes: | Hydraulic drum brakes | |
| Chassis & body: | Fackverk frame with aluminum body | steel tubular spaceframe |
| wheelbase: | Template:Cvt | |
| Dry weight: | About Template:Cvt | About Template:Cvt |
| Top speed: | Template:Cvt | Template:Cvt |
Images
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Maserati 250F
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straight 6 Maserati 250 F
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Cockpit
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Works team at Aintree, 1957
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Fangio and 250F
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Maserati 250F v12 at the Umberto Panini museum
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Racing history
The 250F first raced in the 1954 Argentine Grand Prix where Juan Manuel Fangio won the first of his two victories before he left for the new Mercedes-Benz team. Fangio won the 1954 Drivers' World Championship, with points gained with both Maserati and Mercedes-Benz; Stirling Moss raced his own privately owned 250F for the full 1954 season. Prince Bira was another driver favouring the 250F.
In 1955 a 5-speed gearbox; SU fuel injection (240 bhp) and Dunlop disc brakes were introduced. Jean Behra drove this in a five-member works team which included Luigi Musso.
In 1956 Stirling Moss won the Monaco and Italian Grands Prix, both in a works car.
In 1956 three 250F T2 cars first appeared for the works drivers. Developed by Giulio Alfieri using lighter steel tubes they sported a slimmer, stiffer body and sometimes the new Script error: No such module "convert". V12 engine of Script error: No such module "convert". capacity Script error: No such module "convert"., although it offered little or no real advantage over the older straight 6. It was later developed into the 3 litre V12 that won two races powering the Cooper T81 and T86 from 1966 to 1969,[2] the final "Tipo 10" variant of the engine having three valves and two spark plugs per cylinder.
In 1957 Juan Manuel Fangio drove to four more championship victories, including his final win at German Grand Prix at the Nürburgring (Aug. 4, 1957), where he overcame a 48-second deficit in 22 laps, passing the race leader, Mike Hawthorn, on the final lap to take the win. In doing so he broke the lap record at the Nürburgring, 10 times.
By the 1958 season, the 250F was totally outclassed by the new rear engined F1 cars. However, the car remained a favourite with the privateers, including Maria Teresa de Filippis, and was used by back markers through the 1960 F1 season, the last for the 2.5 litre formula.
In total, the 250F competed in 46 Formula One championship races with 277 entries, leading to eight wins. Success was not limited to World Championship events with 250F drivers winning many non-championship races around the world.
Stirling Moss later said that the 250F was the best front-engined F1 car he drove.[3]
World Championship wins
Non-World Championship wins
References
Notes
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- ↑ Grand Prix Data Book, David Hayhoe & David Holland, 2006
- ↑ https://www.ultimatecarpage.com/car/4752/Cooper-T81-Maserati.html
- ↑ Script error: No such module "citation/CS1".Template:Cbignore
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Bibliography
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- David McKinney, Maserati 250F,
External links
- 250F Overview Article Template:Webarchive
- Case history of 250F article with complete chassis data
- Top Gear 250F review
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- 1954 Formula One season cars
- 1955 Formula One season cars
- 1956 Formula One season cars
- 1957 Formula One season cars
- 1958 Formula One season cars
- 1959 Formula One season cars
- 1960 Formula One season cars
- Maserati vehicles
- Maserati Formula One cars
- Cars introduced in 1954
- Formula One championship–winning cars