Clay Regazzoni, winner of the 1970 Italian Grand Prix |
Model 312 B
Formula 1 racing car.
Years of activity 1970/1971.
First race South African Grand Prix of 7.3.1970.
Engine Type 001. Rear-mounted. 12 cylinders in 180° V. Light alloy cylinder block and head, press-fitted aluminium wet cylinder liners, 112 mm connecting rod, water cooled.
Bore and stroke 78.5 x 51.5 mm.
Unitary and total capacity 249.25 / 2,991.01 cc.
Compression ratio 11.8:1.
Max. power output 460 bhp at 12,000 rpm.
Timing gear 4 valves per cylinder, 2 overhead camshafts per bank of cylinders, rear geared drive.
Fuel feed Lucas indirect injection.
Ignition Single. Distributor, coil and Dinoplex electronic capacitive discharge.
Lubrication Pressurised with radiator. Dry sump.
Transmission Rear. Borg & Beck multi-plate clutch, 001 gearbox with 5 speeds + reverse, rear longitudinal overhanging gearbox, in block with multi-plate self-locking differential.
Gear ratios Variable depending on racing circuit.
Frame Type 001. Stress-bearing body, aluminium panels riveted on a steel tube structure. Partially stress-bearing engine.
Front suspension Double wishbones: upper rocker arm, lower triangle, inboard spring/damper units and anti-roll bar.
Rear suspension Double wishbones: upper arm, inverted lower triangle, 2 longitudinal struts and anti-roll bar.
Steering Rack and pinion.
Brakes Girling discs and callipers mounted on wheels. Separate adjustable hydraulic circuits on the two axles.
Tyres Front 9-22-13î, rear 12.5-26-15î. Firestone.
Rims Cast light alloy. front 10x13î, rear 14x15î.
Wheelbase 2,385 mm.
Front/rear track 1,553 / 1,550 mm.
Length 4,020 mm.
Width 742 mm.
Height 956 mm.
Weight with water and oil 551 kg.
Fuel tank 240 litres. Side-mounted in canvas/Pirelli rubber.
Battery 12 Volt Safa.
Bodywork Aluminium single-seater body with composite elements.
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