Warner Scarab Jr

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The Warner Scarab Jr was a 5-cylinder, air-cooled, radial aero engine first produced in 1930. It was a scaled-down derivative of the Warner Scarab, developing 90 hp (70 kW) against the Scarab's 110 hp (80 kW).

[edit] Specifications (Warner Scarab Junior 50)

General characteristics

• Type: 5 cylinder air cooled radial
• Bore: 117mm (4.625in)
• Stroke: 108mm (4.25in)
• Displacement: 4.93 Liters (301 cu in)
• Length: 355.6mm (14 in)
• Width: mm (in)
• Height: 927mm (36.5 in)
• Dry weight: 104kg (230 lb)

Components

• Valvetrain: 1 inlet and 1 exhaust valve per cylinder
• Fuel system: 1 Holley carburetor
• Fuel type: 73 octane

Performance

• Power output: 90hp @ 2,025 RPM
• Compression ratio: 5.2:1
• Power-to-weight ratio: 2.56lb/hp @ cruise speed

[edit] Applications

• Aeronca L
• Culver Dart
• Rearwin Sportster

[edit] References

• Gunston, Bill. (1986). World Encyclopaedia of Aero Engines. Patrick Stephens: Wellingborough. p.169
• http://www.oldengine.org/members/diesel/Duxford/usaero13.htm

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