Szekely SR-3

SR-3
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.

Applications

• American Eagle Eaglet
• Curtiss-Wright Junior
• Lambach HL.1
• Rearwin Junior
• Taylor H-2
• Prest Baby Pursuit

Specifications (SR-3 Mod. O)

Data from American Engine Specifications^[1]

General characteristics

• Type: Three-cylinder radial engine
• Bore: 4 ¹⁄₈ in (105 mm)
• Stroke: 4 ³⁄₄ 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)

Components

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

Performance

• Power output: 45 hp (34 kW) at 1750 rpm
• Specific fuel consumption: 0.60 lb/(hp·h)

See also

Comparable engines

• Blackburne Thrush
• Bristol Lucifer
• Salmson AD.3

Related lists

• List of aircraft engines

References

Wikimedia Commons has media related to Szekely SR-3.

• "Table 4: American Engine Specifications". Aviation. Vol. 30 no. 7. July 1931. p. 43. (Registration required (help)). 
• Taylor E-2 Taylor E-2, retrieved October 30, 2007
• "Szekely SR-3 L" Old Rhinebeck Aerodrome, retrieved October 30, 2007