• Source: Szekely SR-3

3/info/szekely" target="_blank">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.




Variants


Data from:Jane's all the World's Aircraft 1931

3/info/sr" target="_blank">SR-3 O
Overhead valve combustion chamber, compression ratio 4.6:1, 45 hp (34 kW) at 1,750 rpm.
3/info/sr" target="_blank">SR-3 L
Side-valve combustion chamber, compression ratio 5:1, 30 hp (22 kW) at 1,750 rpm.




Applications


American Eagle Eaglet
Buhl Bull Pup
Curtiss-Wright Junior
Lambach HL.1
Nicholson Junior KN-2
Prest Baby Pursuit
Rearwin Junior
Taylor H-2




Specifications (3/info/sr" target="_blank">SR-3 Model O)


Data from American Engine Specifications, Jane's all the World's Aircraft 1938, Jane's all the World's Aircraft 1931




= 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: 25 in (635 mm) overall
Diameter: 36 in (914 mm) (Model L 30 in (760 mm))
Dry weight: 147 lb (67 kg)




= Components

=
Valvetrain: one camshaft per cylinder: pushrod-operated overhead inlet outlet valves, one each per cylinder; (Model L valves directly operated by tappets.)
Fuel system: Stromberg NA-S3 Carburetor or Zenith equivalent
Cooling system: Air-cooled
Bosch FU6/3 or Scintilla magnetoes




= Performance

=
Power output: 45 hp (34 kW) at 1,750 rpm
Specific fuel consumption: 0.60 lb/(hp·h) [0.365 kg/(kW·h)]
Oil consumption: 0.16 lb/(hp·h)




See also



Comparable engines

Blackburne Thrush
Bristol Lucifer
Salmson AD.3
Related lists

List of aircraft engines




References






External links


"3/info/szekely" target="_blank">Szekely 3/info/sr" target="_blank">SR-3 L" Old Rhinebeck Aerodrome, retrieved October 30, 2007

Kata Kunci Pencarian:

• Szekely SR-3
• SR 3
• Taylor Cub
• Curtiss-Wright Junior
• American Eagle Eaglet
• Szekely Flying Dutchman
• Salmson AD.3
• List of aircraft engines
• Walter NZ 40
• Louis C.K.