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Model

F1-91


Type


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 25x10, rear 26x15. 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.