Wolseley Viper
| Viper | |
|---|---|
 | |
| Rear view of preserved Wolseley Viper | |
| Type | Piston inline aero-engine |
| Manufacturer | Wolseley Motors |
| First run | 1918 |
| Major applications | Royal Aircraft Factory S.E.5 |
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The Wolseley Viper is a British-built, high-compression derivative of the Hispano Suiza HS-8 liquid-cooled V-8 engine, built under licence by Wolseley Motors during World War I.
It powered later models of the S.E.5a, SPAD VII and other British or British-built aircraft designed for the Hispano-Suiza.
Variants
- Wolseley W.4A Python I
- Wolseley W.4A Python II
- Wolseley W.4A Viper
- Wolseley W.4B Adder I
- Wolseley W.4B Adder II
- Wolseley W.4B Adder III
- Wolseley W.4A Python
Applications
- Airco DH.9
- Avro 552
- Bristol M.R.1
- Bristol Tourer
- Cierva C.8
- Martinsyde F.6
- Royal Aircraft Factory S.E.5a
- Sopwith Antelope
- Sopwith Cuckoo
Survivors
The Wolseley Viper powered Royal Aircraft Factory S.E.5a that is owned and operated by the Shuttleworth Collection remains airworthy and can be seen flying at home displays throughout the summer months.[1]
Engines on display
- A preserved Wolseley Viper is on public display at the Science Museum, London.
- A preserved Wolseley Viper is on public display at the Museo Nacional de Aeronáutica de Argentina
Specifications (W.4A Viper)
Data from Lumsden[2]
General characteristics
- Type: 8-cylinder, upright, 90 degree Vee engine
- Bore: 4.72 in (120 mm)
- Stroke: 5.12 in (130 mm)
- Displacement: 716.8 cu in (11.77 L)
- Dry weight: 500 lb
Components
- Fuel system: Twin Zenith-Duplex carburettors
- Cooling system: Liquid-cooled
- Reduction gear: Direct drive, Right-hand tractor
Performance
- Power output: 200 hp at 2,000 rpm (takeoff power)
- Compression ratio: 5.3:1
See also
- Related development
- Comparable engines
- Related lists
References
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Wikimedia Commons has media related to Wolseley Viper. |
Notes
- ↑ Shuttleworth Collection S.E.5A www.shuttleworth.org Retrieved: 24 September 2009
- ↑ Lumsden 2003, p. 232.
Bibliography
- Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
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