| ABC Motors|
The ABC Scorpion is a 30 hp (22 kW) two-cylinder aero engine designed by the noted British engineer Granville Bradshaw for use in light aircraft. The engine was built by ABC Motors Limited and first ran in 1921.
Scorpion IABC Scorpion Wikipedia
1923, 30 hp (22 kW)
1924, 34 hp (25 kW), increased bore and stroke.
The only ANEC II (G-EBJO) flies regularly at the Shuttleworth Collection at Old Warden and is powered by a Scorpion II.
Data from LumsdenType: 2 cylinder air cooled flat-twin
Bore: 3.6 in (87.5 mm)
Stroke: 3.7 in (91.5 mm)
Displacement: 73.32 cu in (1.1 L)
Dry weight: 90 lb (41 kg)
Valvetrain: Overhead valve, two valves per cylinder
Fuel system: Carburettor
Fuel type: 74 Octane petrol
Cooling system: Air
Power output: 30 hp (22 kW) at 2,750 rpm
Compression ratio: 4:1
Power-to-weight ratio: 0.33 hp/lb (0.53 kW/kg)