ABC Scorpion
1920s British piston aircraft engine
The ABC Scorpion is a 30 hp (22 kW) two-cylinder aero engine designed by British engineer Granville Bradshaw for use in light aircraft. The engine was built by ABC Motors Limited and first ran in 1921.
01Variants
- Scorpion I
- 1923, 30 hp (22 kW)
- Scorpion II
- 1924, 34 hp (25 kW), increased bore and stroke.
02Applications
- ABC Robin
- Boulton Paul Phoenix
- BFW M.19
- BFW M.23
- Comper Swift
- de Havilland Humming Bird
- Farman Moustique
- Hawker Cygnet
- Heath Parasol
- Hendy Hobo
- Henderson-Glenny Gadfly
- Kay Gyroplane
- Luton Minor
- Mignet HM.14 Pou-du-Ciel
- Parmentier Wee Mite
- Peyret-Mauboussin PM X
- RWD 1
- SAI KZ I
- Saynor & Bell Canadian Cub
- Short Satellite
- Snyder Buzzard
- Udet U 7 Kolibri
- Wheeler Slymph
- Westland Woodpigeon
03Survivors
The only ANEC II (G-EBJO) flies regularly at the Shuttleworth Collection at Old Warden and is powered by a Scorpion II.
04Specifications (Scorpion I)
Data from Lumsden
General characteristics
- Type: 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)
Components
- Valvetrain: Overhead valve, two valves per cylinder
- Fuel system: Carburettor
- Fuel type: 74 Octane petrol
- Cooling system: Air
Performance
- 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)
Sources and credits
This article is adapted from the Wikipedia article “ABC Scorpion”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- ABC Scorpion I.jpg by Nimbus227, CC BY-SA 4.0
- ABCScorpion.JPG by Self, Public domain
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