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Lawrance A 3

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Lawrance A-3

The Lawrance A-3 or Lawrance Model A was an American twin-cylinder aircraft piston engine. Designed by Charles Lawrance in the mid-1910s the engine was produced by the Lawrance Aero Engine Company and under license by Excelsior. Weighing 200 lb (90 kg) the engine produced 28 horsepower (21 kW). A feature of this engine was the shared use of a single crankpin for both cylinders, this caused vibration as the pistons moved in the same direction.

Contents

Applications

  • Breese Penguin (flightless ground training aircraft)
  • Driggs Dart
  • Waco Cootie
  • Shinnecock lightplane

    • Specifications

    Data from Gunston.

    General characteristics

  • Type: Two-cylinder, air-cooled horizontally opposed piston aircraft engine
  • Dry weight: 200 lb (91 kg)

    • Components

  • Cooling system: Air-cooled

    • Performance

  • Power output: 28 hp (21 kW)

    • References

    Lawrance A-3 Wikipedia
    (Text) CC BY-SA