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ABC Hornet

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Manufacturer
  
ABC Motors

The ABC Hornet was an 80 hp (90 kW) four-cylinder aero engine designed in the late 1920s by the noted British engineer Granville Bradshaw for use in light aircraft. The Hornet was effectively a double Scorpion and was built by ABC Motors, first running in 1929.

Contents

In 1931 the engine was re-designed, including the adoption of the new Hiduminium alloys for the crankcase, exhaust manifolds and pistons.

Applications

  • Airship Development AD1
  • Civilian Coupe
  • Robinson Redwing
  • Southern Martlet
  • Westland Widgeon

    • Specifications (Hornet)

    Data from Lumsden

    General characteristics

  • Type: 4-cylinder, horizontally opposed, air-cooled piston engine
  • Bore: 4.02 in (102 mm)
  • Stroke: 4.8 in (124.5 mm)
  • Displacement: 243.18 cu in (4 L)
  • Length: 25.5 in (648 mm)
  • Width: 39 in (990 mm)
  • Height: 28 in (711 mm)
  • Dry weight: 225 lb (102 kg)

    • Components

  • Valvetrain: Overhead valve, two valves per cylinder
  • Fuel type: Petrol (74 Octane rating)
  • Cooling system: Air cooled

    • Performance

  • Power output: 82 hp (61 kW) at 2,175 rpm (maximum continuous climb power)
  • Specific power: 0.34 hp/cu in (15.25 kW/L)
  • Compression ratio: 5.6:1
  • Power-to-weight ratio: 0.37 hp/lb (0.6 kW/kg)

    • References

    ABC Hornet Wikipedia
    (Text) CC BY-SA