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Montecarlo, 21 May 1950: Alberto Ascari, second in the Monaco Grand Prix



Model

125 F1 GP49

Type


Formula 1 racing car.

Years of activity


1949/1950.

First race


Italian Grand Prix of 11.9.49

Engine


12 cylinders in 60° V, front-mounted. Light alloy cylinder block and heads, press-fitted steel cylinder liners. Water cooled.

Bore and stroke


55 x 52.5 mm.

Unitary and total capacity


124.73 / 1,496.76 cc.

Compression ratio


6.5:1.

Max. power output


280 bhp at 8,000 rpm.

Timing gear


2 valves per cylinder, twin overhead cam per bank of cylinders with sliding rocker arms and pin springs, chain drive.

Fuel feed


Forced with two Roots displacement compressor in series, one Weber 40 DO 3C triple-choke carburettor.

Ignition


Single. Two Marelli magnetos positioned at the rear ends of the intake camshafts.

Lubrication


Pressurised with radiator, wet sump.

Transmission


Rear. Single-plate clutch, 5 speed gearbox + reverse on side of engine, self-locking differential.

Gear ratios


Variable depending on racing circuit.

Frame


With two elliptic section longitudinals and tubular cross members.

Front suspension


Double wishbones: double triangles, lower transverse leaf spring, hydraulic dampers.

Rear suspension


Independent. Oscillating stub axles, lower transverse leaf spring, longitudinal struts, torsion bars, hydraulic dampers.

Steering


Worm and sector.

Brakes


Drums all round with hydraulic control.

Tyres


Front 5.50x16, rear 6.50x16. Pirelli.

Rims


Spoked.

Wheelbase


2,380 mm.

Front/rear track


1,278 mm / 1,250 mm.

Length


3,685 mm.

Width


1,400 mm.

Height


1,025 mm.

Weight with water and oil


700 kg.

Fuel tank (litres)


140, mixture.

Bodywork


Aluminium single-seater body.