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ABC 8 hp

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Manufacturer  ABC Motors
ABC 8 hp httpsuploadwikimediaorgwikipediacommonsthu

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.



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

    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)
  • References

    ABC 8 hp Wikipedia

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