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) 2,493 cm3 capacity 84 by 75 mm (3.31 by 2.95 in) Maserati A6 straight-six engine, ribbed 13.4" drum brakes, wishbone independent front suspension, a De Dion tube axle, Borrani 16" and 17" wheels and Pirelli Stella Bianca tyres. It was designed 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 data250F250F T2
Engine: Front mounted 6-cylinder in-line engineFront mounted 60° 12 cylinder V engine
displacement: 2493 cc2491 cc
Bore × stroke: 84 × 75 mm68.7 × 56 mm
Max power at rpm: 270 hp-metric at 8,000 rpm310 hp-metric at 9,300 rpm
Valve control: 2 overhead camshafts, 2 valves per cylinder
Carburetor: 3 Weber 45DCO36 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 bodysteel tubular spaceframe
wheelbase: 2,280 mm (90 in)
Dry weight: About 630 kg (1,400 lb)About 650 kg (1,400 lb)
Top speed: 290 km/h (180 mph)305 km/h (190 mph)

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.[citation needed]

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.[citation needed]

In 1956 Stirling Moss won the Monaco and Italian Grands Prix, both in a works car.[citation needed]

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 315 hp (235 kW) V12 engine of 2,491 cm3 capacity 68.7 by 56 mm (2.70 by 2.20 in), 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.[citation needed]

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.[citation needed]

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.[citation needed]

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.[citation needed]

Stirling Moss later said that the 250F was the best front-engined F1 car he drove.[3]

World Championship wins

YearRaceCircuitDriver
1954Argentine Grand PrixAutódromo 17 de OctubreJuan Manuel Fangio
Belgian Grand PrixSpa-FrancorchampsJuan Manuel Fangio
1956Monaco Grand PrixMonte CarloStirling Moss
Italian Grand PrixMonzaStirling Moss
1957Argentine Grand PrixAutódromo 17 de OctubreJuan Manuel Fangio
Monaco Grand PrixMonte CarloJuan Manuel Fangio
French Grand PrixRouen-Les-EssartsJuan Manuel Fangio
German Grand PrixNürburgringJuan Manuel Fangio

Non-World Championship wins

Non-World Championship wins
YearRaceCircuitDriver
1954II Curtis TrophySnettertonRoy Salvadori
XIII Rome Grand PrixCastelfusanoOnofre Marimón
I International Gold CupGoodwoodStirling Moss
XXIII Pescara Grand PrixPescaraLuigi Musso
VII Goodwood TrophyGoodwoodStirling Moss
I Daily Telegraph TrophyGoodwoodStirling Moss
1955III New Zealand Grand PrixArdmorePrince Bira
XVI Pau Grand PrixPauJean Behra
I Glover TrophyGoodwoodRoy Salvadori
IV Bordeaux Grand PrixBordeauxJean Behra
VII BRDC International TrophyGoodwoodPeter Collins
XVII Albi Grand PrixAlbiAndré Simon
III Curtis TrophySnettertonRoy Salvadori
III London TrophyCrystal PalaceMike Hawthorn
III Daily Record TrophyCharterhallBob Gerard
II Daily Telegraph TrophyAintreeRoy Salvadori
II International Gold CupOulton ParkStirling Moss
1956IV New Zealand Grand PrixArdmoreStirling Moss
IV Glover TrophyGoodwoodStirling Moss
XI BARC Aintree 200AintreeStirling Moss
I Aintree 100AintreeHorace Gould
I Vanwall TrophySnettertonHorace Gould
IV Caen Grand PrixCircuit de la PrairieHarry Schell
1957XI Buenos Aires Grand PrixAutódromo Oscar Alfredo GálvezJuan Manuel Fangio
XVII Pau Grand PrixPauJean Behra
V Modena Grand PrixModenaJean Behra
VI Grand Prix de MarocAin-Diab CircuitJean Behra

References

Notes

  1. ^ Grand Prix Data Book, David Hayhoe & David Holland, 2006
  2. ^ https://www.ultimatecarpage.com/car/4752/Cooper-T81-Maserati.html
  3. ^ bitsmartuk (13 May 2008). "Martin Brundle drives a Maserati 250f". Archived 2021-12-14 at the Wayback Machine. Retrieved 13 April 2018. – via YouTube.

Bibliography

  • Hall, Andy (1990). Maserati 250F: A Technical Appraisal. Foulis motoring book series. Sparkford, Somerset, England; Newbury Park, CA, USA: Haynes Publishing. ISBN 0854298037.
  • David McKinney, Maserati 250F,