Warner Scarab Junior






















Scarab Junior
Type
Radial engine
Manufacturer
Warner Aircraft Corporation
First run
 November 1930

Developed from
Warner Scarab

The Warner Scarab Junior was an American, five-cylinder, air-cooled, radial aero engine first produced in 1930. It was a scaled-down derivative of the seven-cylinder Warner Scarab, developing 90 hp (70 kW) against the Scarab's 110 hp (80 kW).



Applications



  • Aeronca L

  • Culver Dart

  • Rearwin Sportster



Specifications (Warner Scarab Junior 50)


Data from FAA Type Certificate Data Sheet (TCDS).[1]


General characteristics




  • Type: Five-cylinder, air-cooled, radial piston engine


  • Bore: 4.25 in (108 mm)


  • Stroke: 4.25 (108 mm)


  • Displacement: 301 cu in (4.93 L)


  • Length: 14 in (35.5 cm)


  • Height: 36.5 in (93 cm)


  • Dry weight: 237 lb (107.5 kg)


Components




  • Valvetrain: 1 inlet and 1 exhaust valve per cylinder


  • Fuel system: 1 Holley carburetor


  • Fuel type: 54 octane Avgas


Performance




  • Power output: 90 hp (67 kW) at 2,050 rpm


  • Compression ratio: 5.2:1


  • Power-to-weight ratio: 0.38 hp/lb (0.62 kW/kg)



See also



Related development


  • Warner Scarab


Comparable engines



  • Armstrong Siddeley Genet

  • Kinner K-5


Related lists


  • List of aircraft engines


References





  1. ^ FAA TCDS - E-54 Retrieved: November 19, 2010.]




  • Gunston, Bill. (1986). World Encyclopaedia of Aero Engines. Patrick Stephens: Wellingborough. p. 169

  • Oldengine.org - US Aero engines page









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