  Montecarlo, 18 May 1958: Mike Hawthorn, Drivers' World Champion in 1958, in the Monaco Grand Prix |
 Model 246 F1
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 5.50x16î, rear 6.50x16î. Englebert.
Rims Spoked, front 4.50Kx16î, rear 5.50Kx16î.
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.
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