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Montecarlo, 18 May 1958: Mike Hawthorn, Drivers' World Champion in 1958, in the Monaco Grand Prix



Model

246 F1


Type


Formula 1 racing car.

Years of activity


1958.

First race


Argentine Grand Prix of 19.1.1958

Engine


Type 143. 6 cylinders in 65° V, front-mounted with longitudinal inclination, light alloy cylinder block and head, press-fitted cast iron cylinder liners, 132 mm connecting rod, water cooled.

Bore and stroke


85 x 71 mm.

Unitary and total capacity


402.889 / 2,417.337 cc.

Compression ratio


9.8:1.

Max. power output


280 bhp at 8,500 rpm.

Timing gear


2 valves per cylinder, 2 overhead camshafts per bank of cylinders, chain drive.

Fuel feed


Single, with 3 twin-choke downdraft Weber 42 DCN carburettors.

Ignition


Double with a single Marelli magneto.

Lubrication


Forced, dry sump.

Transmission


Rear. Multi-plate clutch, 523 gearbox with 4 speeds + reverse, transverse in block with ZF self-locking differential.

Gear ratios


Variable depending on racing circuit.

Frame


Type 528. Structure made of two main elliptic tubes and other small tubes to form a light, rigid complex.

Front suspension


Double wishbones: double triangles, coil springs, telescopic dampers and anti-roll bar.

Rear suspension


De Dion axle, transverse upper leaf spring, two longitudinal struts, Houdaille lever dampers.

Steering


Worm and sector.

Brakes


Drums with helical fins. Hydraulic control. Front 350 x 48 mm, rear 300 x 50 mm.

Tyres


Front 5.50x16, rear 6.50x16. Englebert.

Rims


Spoked, front 4.50Kx16, rear 5.50Kx16.

Wheelbase


2,160 mm.

Front/rear track


1,240 mm / 1,240 mm.

Length


4,030 mm.

Width


1,500 mm.

Height


980 mm.

Weight with water and oil


560 kg.

Fuel tank


160 litres, rear-mounted (aviation fuel NO 100/130).

Bodywork


Single-seater aluminium body.