• Source: ABC 8 hp

      • The ABC 8 hp is an 8 hp (6 kW) two-cylinder aero engine designed by the noted British engineer Granville Bradshaw for use in ultralight aircraft. The engine was derived from a specially tuned motorcycle unit and was built by ABC Motors, first running in 1923.


      Applications


      English Electric Wren
      Handley Page H.P.22
      Pegna-Bonmartini Rondine


      Surviving engines


      The sole surviving English Electric Wren (G-EBNV) flies occasionally at the Shuttleworth Collection at Old Warden and is powered by an ABC 8 hp engine. With barely enough power to maintain flight the aircraft is assisted into the air by a team of volunteers using bungee cord, after which the Wren lands straight ahead following a short 'hop'.


      Specifications (ABC 8 hp)


      Data from Lumsden


      = General characteristics

      =
      Type: 2-cylinder air-cooled flat-twin
      Bore: 2.72 in (69 mm)
      Stroke: 2.13 in (54 mm)
      Displacement: 24.76 cu in (404 cc)
      Dry weight: 41 lb (18.6 kg)


      = Components

      =
      Valvetrain: Overhead valve, two valves per cylinder
      Fuel system: Carburettor
      Fuel type: Petrol
      Cooling system: Air-cooled


      = Performance

      =
      Power output: 8 hp (6 kW) at 4,500 rpm
      Power-to-weight ratio: 0.2 hp/lb (0.32 kW/kg)


      See also


      ABC motorcycles
      Related development

      ABC Scorpion

      Comparable engines

      Armstrong Siddeley Ounce
      Bristol Cherub
      Walter Atom
      Related lists

      List of aircraft engines


      References




      = Notes

      =


      = Bibliography

      =


      External links

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