Warner Scarab Junior
1930s American piston aircraft engine
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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).
| Scarab Junior | |
|---|---|
| Type | Radial engine |
| Manufacturer | Warner Aircraft Corporation |
| First run | November 1930 |
| Developed from | Warner Scarab |
Applications
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
Comparable engines
Related lists