P.Z. Inż. Minor

The Walter Minor is a family of four- and six-cylinder inverted inline air-cooled engines, developed under auspices of ing. Šimůnek and used on light aircraft. First produced in 1929, the Minor engines' family has an advanced design for the period and sports steel cylinders, aluminum heads and overhead valves, with identical bore and stroke of and , respectively. Typical power ratings varied from .

After Walter concentrated on the turbine powerplants only, the production of piston engines has been transferred to the Avia company that further developed the family, bringing fuel injection, as the Avia M-137 and M-337. Nowadays the smallest of the family, the four-cylinder carburetted Minor, is produced by a small company in the Czech Republic, while the M337 was available from the LOM Prague.

Variants

4 Cylinder

;Minor 4-I:
;Minor 4-II:
;Minor 4-III:
;Minor 4-IIIS: A 4-III fitted with a crankshaft driven supercharger.
;Minor M 332 (4 cyl.)

6 Cylinder

;Minor 6-I:
;Minor 6-II:
;Minor 6-III:
;Minor 6-IIIS: A 6-III fitted with a crankshaft driven supercharger.
;Minor M 337 (6 cyl.)

Others

;Minor Sc.:

Applications

Specifications (Minor 4-cylinder)

''Data from:'' Oldengine.org Oldengine.org
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See also

References

*
* Gunston, Bill. ''World Encyclopedia of Aero Engines''. Cambridge, England. Patrick Stephens Limited, 1989.

External links

{{Walter aeroengines

Aircraft air-cooled inline piston engines
1920s aircraft piston engines
Inverted aircraft piston engines
Minor