Walter Bora
The Walter Bora was a Czechoslovakian nine-cylinder, air-cooled radial engine for powering light aircraft that was developed in the 1930s by Walter Aircraft Engines.[1]
| Bora | |
|---|---|
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| Walter Bora | |
| Type | Radial aero engine |
| National origin | Czechoslovakia |
| Manufacturer | Walter Aircraft Engines |
Variants
- Bora II
- Direct drive engine
- Bora II-R
- Geared engine, reduction ratio 0.666:1
Applications
Engines on display
A preserved example of the Walter Bora engine is on display at the following museum:
Specifications (Bora II-R)
Data from Flight[2]
General characteristics
- Type: 9-cylinder radial piston engine
- Bore: 105 mm (4.1 in)
- Stroke: 120 mm (4.7 in)
- Dry weight: 172 kg (379 lb)
Components
- Valvetrain: One intake and one exhaust valve per cylinder
- Fuel system: Carburettor
- Fuel type: Petrol
- Cooling system: Air-cooled
Performance
- Power output: 183 kW (245 hp) at 2,400 rpm
- Compression ratio: 6.3:1
- Power-to-weight ratio: 1 kW/kg (0.65 hp/lb)
References
Wikimedia Commons has media related to Walter Bora.
Notes
- Gunston 1989, p. 174.
- Flight - Walter engines - November 1936 Retrieved: 19 October 2010
Bibliography
- Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
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