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Alberto Ascari



Model

125 F1

Type


Formula 1 racing car.

Years of activity


1948/1949/1950.

First race


Italian Grand Prix of 5.9.48.

Engine


125 type. 12 cylinders in 60° V, front-mounted, light alloy cylinder block and heads, press-fitted cylinder liners, water cooled.

Bore and stroke


55 x 52.5 mm.

Unitary and total capacity


124.73 / 1,496.77 cc.

Compression ratio


6.5:1.

Max. power output


230 bhp at 7,000 rpm.

Timing gear


2 valves per cylinder, 1 overhead cam per bank of cylinders with sliding rocker arms and pin springs, chain drive.

Fuel feed


Forced. Single-stage Roots displacement compressor, 1 Weber 40 DO 3C triple-choke carburettor.

Ignition


Single with two Marelli magnetos positioned vertically on the camshafts.

Lubrication


Forced and dry sump.

Transmission


Rear. Dry, single-plate clutch, 5 speed gearbox + reverse in block with engine, conventional differential.

Gear ratios


Variable depending on racing circuit.

Frame


Two elliptic section longitudinals and tubular cross members.

Front suspension


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

Rear suspension


Swing axle shafts, thrust bars, torsion bar and Houdaille hydraulic dampers.

Steering


Worm and sector.

Brakes


Drums all round with hydraulic control.

Tyres


Front 5.50x15, rear 7.00x15. Pirelli.

Rims


Spoked.

Wheelbase


2,160 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


710 kg.

Fuel tank (litres)


120, mixture.

Bodywork


Aluminium single-seater body.