The Walter Castor was a Czechoslovakian seven-cylinder, air-cooled radial engine for powering aircraft that was developed in the late 1920s. The Super Castor was a nine-cylinder development.Gunston 1989, p. 174. Castor I production began in 1928, Castor II in 1932 and the Castor III in 1934.

Applications

Aero A.35 The Aero A.35 was a Czechoslovakian airliner of the 1920s and 1930s. Designed by Aero for long-range flight, with a transatlantic crossing in mind, it saw service with CSA although no such crossing was ever attempted. A conventional high-wing mo ...

Aero A.304 The Aero A.304 was a Czechoslovakian bomber aircraft that first flew in 1937. It had originally been developed as an airliner, the A.204, but when Aero could not find buyers for the design, it was militarised and successfully marketed to the ...

(Super Castor) *

Airspeed Envoy The Airspeed AS.6 Envoy was a twin-engined light transport aircraft designed and produced by the British aircraft manufacturer Airspeed Ltd. The Envoy originated as a heavier twin-engine derivative of Airspeed's Courier light transport aircra ...

* Breda Ba.25 *

Dornier Do K The Dornier Do K was a German commercial passenger and freight monoplane, designed by Claude Dornier and built by Dornier Flugzeugwerke. Only three prototypes of different designs were built and the type was not a commercial success. Design and ...

Fizir F1V The Fizir F1V (Serbian Cyrillic:Физир Ф1В) was the basis from which engineer Rudolf Fizir developed a series of single-engined, two-seat, reconnaissance biplanes fitted with different engines. Construction was carried out in the Yugoslav ...

Hopfner HV-6/28 The Hopfner HV-6/28 was a small airliner built in Austria in the late 1920s for Swiss use. Unrelated to Hopfner's other airliners of the period, the HV-6/28 was a conventional, high-wing, strut-braced monoplane with a fully enclosed cabin. The mai ...

Letov Š-28 The Letov Š-28 was a Czechoslovak single-engined, two-seat reconnaissance aircraft. It was manufactured by Letov Kbely in a number of versions with different powerplants. The most important version was the Š-328, which was produced in relativel ...

* Rogozarski AZR * Savoia-Marchetti S.71

Engines on display

A preserved example of the Walter Castor engine is on display at the following museum: * Prague Aviation Museum, Kbely

Specifications (Castor I)

References

Notes

Bibliography