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 5.50x16î, rear 6.50x16î. 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.
|