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From Wikipedia, the free encyclopedia

A-3/Model A
Lawrance A 1916.JPG
Lawrance Model A engine on display at the Aviation Hall of Fame and Museum of New Jersey
Type Piston aero engine
National origin United States
Manufacturer Lawrance Aero Engine Company
Designed by Charles Lawrance
First run c.1916
Produced c.450

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).[1] 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.[1]

Applications

  • Breese Penguin (flightless ground training aircraft)
  • Driggs Dart
  • Mummert Cootie
  • Shinnecock lightplane
  • Swanson SS-3
  • Waco Cootie I (monoplane)
  • Waco Cootie II (biplane)

Engines on display

Specifications

Data from Gunston.[1]

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) at 1400 rpm

See also

Comparable engines

Related lists

References

Notes
  1. ^ a b c Gunston 1989, p. 92.
Bibliography
  • Gunston, Bill. World Encyclopaedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
This page was last edited on 14 December 2019, at 19:30
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