Walter Pollux
1930s Czech piston aircraft engine
title: "Walter Pollux" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["1930s-aircraft-piston-engines", "walter-aircraft-engines", "aircraft-air-cooled-radial-piston-engines"] description: "1930s Czech piston aircraft engine" topic_path: "general/1930s-aircraft-piston-engines" source: "https://en.wikipedia.org/wiki/Walter_Pollux" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary 1930s Czech piston aircraft engine ::
::data[format=table title="infobox aero engine"]
| Field | Value |
|---|---|
| name | Pollux |
| image | Letecké muzeum Kbely (86).jpg |
| caption | Walter Pollux IIR |
| engine_type | Radial aero engine |
| national_origin | Czechoslovakia |
| manufacturer | Walter Aircraft Engines |
| first_run | 1936 |
| :: |
|name= Pollux |image = Letecké muzeum Kbely (86).jpg |caption = Walter Pollux IIR |engine_type= Radial aero engine |national_origin = Czechoslovakia |manufacturer= Walter Aircraft Engines |first_run= 1936 |major_applications= |number_built = |developed_from = |developed_into = |variants_with_their_own_articles =
The Walter Pollux is a Czechoslovak nine-cylinder, air-cooled, radial engine, built by Walter Aircraft Engines for powering light aircraft and that first ran in 1936. The engine produces 320 hp at 1,800 rpm.
The first known use was on the Fieseler F 2 Tiger in 1934.
Variants
;Pollux II :Direct drive engine ;Pollux II-R :Geared engine, reduction ratio 0.666:1
Applications
Engines on display
A preserved example of the Walter Pollux engine is on display at the following museum:
Specifications (Pollux II)
| and start a new, fully-formatted line with -- |ref=Flight, Jane's all the World's Aircraft 1931 |type=9-cylinder radial piston engine |bore=135 mm |stroke=170 mm |displacement= |length=1220 mm |diameter=1254 mm |width= |height= |weight=712 lb; Pollux IIR 751 lb-geared |valvetrain=One intake and one exhaust valve per cylinder |supercharger= |turbocharger= |fuelsystem=One Zenith double 60DCJ carburettor |fueltype=Benzine - Benzol 50:50 |oilsystem=dry sump pressure feed |coolingsystem=Air-cooled |power=Normal:320 hp at 1,800 rpm; maximum 380 hp at 1,900 rpm |specpower= |compression=6:1 |fuelcon= |specfuelcon=0.464 lb/hp.h |oilcon=0.022 or |power/weight= 1 kW/kg |designer= |reduction_gear=Pollux IIR - 0.666:1 |general_other= |components_other= |performance_other=
References
References
- (1989). "World encyclopaedia of aero engines". P. Stephens.
- (November 2000). "unknown". Flug Revue.
- (26 November 1936). "ENGINES at the PARIS SHOW". Flight.
- (1931). "Jane's all the World's Aircraft 1931". Sampson Low, Marston & company, ltd.
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