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Walter 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 105 mm (4.1 in) and 115 mm (4.5 in), respectively. Typical power ratings varied from 105 to 160 hp (78 to 119 kW).[1]

Minor
Preserved Walter Minor 6-III
Type Inline piston engine
National origin Czechoslovakia
Manufacturer Walter Aircraft Engines
First run 1929

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 edit

4 Cylinder edit

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 edit

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 edit

Minor Sc.

Applications edit

Specifications (Minor 4-cylinder) edit

 
Walter Minor 4-III

Data from: Oldengine.org [2]

General characteristics

  • Type: 4-cylinder inverted inline air-cooled
  • Bore: 105 mm (4.14 in)
  • Stroke: 115 mm (4.53 in)
  • Displacement: 4 L (244 cu in)
  • Length: 1,119 mm (44.09 in)
  • Width: 440 mm (17.32 in)
  • Height: 630 mm (24.80 in)
  • Dry weight: 93 kg (205 lb)

Components

  • Valvetrain: 1 inlet and 1 exhaust valve per cylinder
  • Fuel system: 1 Claudel carburetor
  • Fuel type: 68 octane
  • Cooling system: Air-cooled

Performance

See also edit

Comparable engines

Related lists

References edit

  1. ^ Gunston 1989, p.174.
  2. ^ Oldengine.org
  • "National Technical Museum, Prague". Retrieved 8 July 2013.
  • Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
  • Oldengine.org

External links edit

walter, minor, family, four, cylinder, inverted, inline, cooled, engines, developed, under, auspices, Šimůnek, used, light, aircraft, first, produced, 1929, minor, engines, family, advanced, design, period, sports, steel, cylinders, aluminum, heads, overhead, . The Walter Minor is a family of four and six cylinder inverted inline air cooled engines developed under auspices of ing Simunek 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 105 mm 4 1 in and 115 mm 4 5 in respectively Typical power ratings varied from 105 to 160 hp 78 to 119 kW 1 Minor Preserved Walter Minor 6 III Type Inline piston engine National origin Czechoslovakia Manufacturer Walter Aircraft Engines First run 1929 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 Contents 1 Variants 1 1 4 Cylinder 1 2 6 Cylinder 1 3 Others 2 Applications 3 Specifications Minor 4 cylinder 3 1 General characteristics 3 2 Components 3 3 Performance 4 See also 5 References 6 External linksVariants edit4 Cylinder edit 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 edit 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 edit Minor Sc Applications editAero Ae 45 Aero Ae 50 Aviator Shershen Benes Mraz Beta Minor Fry Esprit VFII Ikarus Aero 2 Ikarus Kurir LAZ 7 Let L 200 Morava LIBIS KB 6 LWD Zuch Manzolini Libellula II Nord NC 856 Nord NC 859 Nord NC 860 OFW OK 15 Orlican L 40 Meta Sokol Pasotti Airone Praga E 210 Praga E 211 RG 7 Șoim RG 7 Șoim III Starck AS 57 Zlin 22 Zlin TrenerSpecifications Minor 4 cylinder edit nbsp Walter Minor 4 III Data from Oldengine org 2 General characteristics Type 4 cylinder inverted inline air cooled Bore 105 mm 4 14 in Stroke 115 mm 4 53 in Displacement 4 L 244 cu in Length 1 119 mm 44 09 in Width 440 mm 17 32 in Height 630 mm 24 80 in Dry weight 93 kg 205 lb Components Valvetrain 1 inlet and 1 exhaust valve per cylinder Fuel system 1 Claudel carburetor Fuel type 68 octane Cooling system Air cooled Performance Power output 95 hp 71 kW at 2 550 rpm Compression ratio 5 3 1 Power to weight ratio 0 76 kW kg 0 46 hp lb at cruise powerSee also editComparable engines Argus As 8 Blackburn Cirrus Minor de Havilland Gipsy Minor Related lists List of aircraft enginesReferences edit Gunston 1989 p 174 Oldengine org National Technical Museum Prague Retrieved 8 July 2013 Gunston Bill World Encyclopedia of Aero Engines Cambridge England Patrick Stephens Limited 1989 ISBN 1 85260 163 9 Oldengine orgExternal links edit nbsp Wikimedia Commons has media related to Walter Minor Retrieved from https en wikipedia org w index php title Walter Minor amp oldid 1102336645, wikipedia, wiki, book, books, library,

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