Walter Minor
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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 Template:Cvt.[1]
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
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Specifications (Minor 4-cylinder)
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 power
See also
Comparable engines
Related lists
References
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- ^ Gunston 1989, p.174.
- ^ Page Module:Citation/CS1/styles.css has no content."Oldengine.org". Archived from the original on 2007-08-04. Retrieved 2007-06-26.
- Page Module:Citation/CS1/styles.css has no content."National Technical Museum, Prague". Archived from the original on 21 January 2017. Retrieved 8 July 2013.
- Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. Template:ISBN
- Oldengine.org Script error: No such module "webarchive".
External links
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