Szekely SR-3

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Szekely SR-3.jpg
Szekely SR-3 aircraft engine, Pima Air & Space Museum
Type Radial engine
Manufacturer Szekely

Szekely aircraft engines were three-cylinder radial engines built in Holland, Michigan in the 1920s and 30s. They were used to power small aircraft such as the Rearwin Junior, Taylor H-2 and American Eagle Eaglet. Often criticized for reliability issues and design flaws many were replaced with better engines in their original airframes. Few examples still exist but a museum quality example is on display in the Holland Museum in Holland, Michigan.


Specifications (SR-3 Mod. O)[edit]

Data from American Engine Specifications[1]

General characteristics

  • Type: Three-cylinder radial engine
  • Bore: 4 18 in (105 mm)
  • Stroke: 4 34 in (121 mm)
  • Displacement: 191 cu in (3.13 L)
  • Length: 23 in (584 mm)
  • Diameter: 36 in (914 mm)
  • Dry weight: 135 lb (61 kg)


  • Valvetrain: 1 pushrod-operated inlet and 1 outlet valve per cylinder
  • Fuel system: Carburetor
  • Cooling system: Air-cooled


See also[edit]

Comparable engines
Related lists


  1. ^ Aviation July 1931, p. 433.