Principal Characteristics.

Engine : Two 6-cylinder units. Bore and Stroke : 65 x 88 mm. Capacity : 3,495 c.c. Maximum Power : 300 h.p. Maximum Speed : 4,800 r.p.rn. Compression Ratio : 51 to 1. Valves : 2 per cylinder, overhead at 900

.

Camshafts : Overhead, 2 per engine.

Timing : Inlet, opens : 5′ lead ; closes : 350 la,. Exhaust opens : 45′ lead, closes 13° lag. Crankshafts : On 5 plain bearings. Connecting Rods. H-Section.

Pistons : Aluminium, 4 rings.

Ignition : Bosch coils.

Lubrication : Forced, single pump per engine.

Carburettors : Memini.

Superchargers : Roots type.

Clutches : Dry-plate.

Gearboxes : 4-speeds. Transmission : Two cardan shafts, enclosed in

torque tubes.

Wheels. Rudge-Whitworth. Tyres : 30 x 6′.

Wheelbase : 9ft. 6ins.

Track : 4ft. 9ins.