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 Model F1-91
Formula 1 racing car.
Years of activity 1991.
First race U. S. Grand Prix of 10.3.1991. From the French GP of 7.7.1991, 643 version, with modified frame and aerodynamics.
Engine Rear-mounted. 12 cylinders in 60° V. Special cast iron cylinder block without press-fitted cylinder liners, light alloy head. Water cooled.
Bore and stroke 86 x 50.2 mm.
Unitary and total capacity 291.6 / 3,499.2 cc.
Compression ratio 13:1.
Max. power output 710 bhp at 13,800 rpm.
Timing gear 5 valves per cylinder (3 intake). 2 overhead camshafts, gear drive at front.
Fuel feed Weber-Marelli digital electronic injection with two injectors per cylinder.
Ignition Single. Magneti Marelli electronic static.
Lubrication Pressurised. Dry sump.
Transmission Rear. Three-plate carbon clutch with mechanical and automatic control. Rear longitudinal overhanging gearbox with 7 speeds + reverse, automatic with electronic management. ZF self-locking differential
Gear ratios Variable depending on racing circuit.
Frame Monococque in composite: carbon fibre and Kevlar honeycomb.
Front suspension Double wishbones: 2 overlapping elliptic section triangles, strut or push-rod springing.
Rear suspension Double wishbones: upper triangle, lower trapezium, strut or push-rod springing.
Steering Rack and pinion.
Brakes Ventilated outboard carbon discs, Brembo monobloc 4-piston callipers.
Tyres Front 25x10î, rear 26x15î. Goodyear. Rims
Wheelbase 2,881 mm.
Front/rear track 1,800 mm / 1,675 mm.
Length 4,400 mm.
Width 2,130 mm.
Height 1,004 mm.
Weight with water and oil 505 kg.
Fuel tank 215 litres, with 1 centre and 1 side tanks. Fuel 102 RON.
Alternator/dynamo Marelli 50/70 W.
Battery Yuasa - 12 Volt.
Bodywork Composite. Fully detachable and removable.
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