Long Harlequin 933

The Long Harlequin is a two-cylinder horizontally opposed aircraft engine.

Long Harlequin 933
Type Horizontally Opposed Piston
National origin United States
Manufacturer
Designed by Leslie Long

Design and development

The Harlequin engine was developed as a replacement to the Heath-Henderson B-4 engine used on the Long Henderson Longster homebuilt aircraft. The cylinders were based on a 74 cubic inch Harley Davidson Engine with connecting rods from Continental built Star Marine engine. The builder was expected to forge their own crankcase and crankshaft.[1][2][3]

Applications

Engines on display
  • Eagles Mere Aircraft Museum [4]

Dart Airport Museum in Mayville NY

Specifications (Long Herlequin)

General characteristics

Components

  • Fuel system: Single carburetor
  • Cooling system: Air-cooled

Performance

  • Power output: 30hp @2650rpm

References
  1. "The Plane That Helped Save Homebuilding". Air Progress. Winter 1969.
  2. "Some remarkable experiments in lightplane performance". Popular Aviation. November 1935.
  3. 1933 Flying Manual (Mechanix Illustrated). Missing or empty |title= (help)
  4. "Eagles Mere aircraft museum". Retrieved 7 October 2013.
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