Avia M 337
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Template:Short description Template:More footnotes
| M 337 | |
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| Right side view of a Walter M337; the front cylinder is hidden by the engine cowling |
The Avia M 337 (originally designated the Walter M337) is an inverted six-cylinder air-cooled inline engine. It was developed by the Czechoslovak company as a six-cylinder derivative of the four-cylinder M 332 engine, going into production in 1960. An unsupercharged version of the M 337 is designated as the LOM M137. Production transferred to Avia in 1964, and to Letecke Opravny Malesice (LOM) in 1992.
Variants
- M 337A
- Basic supercharged engine - not rated for aerobatics
- M 337R
- Modified for pusher installation
- M 337AK
- modified oil system for unlimited inverted flying. "Snap" aerobatics permitted.
- M 337AK1
- AK fitted with alternator instead of generator
- M 337B
- Increased max running speed (3000 rpm) - increased power - Template:Cvt.
- M 337BK
- Aerobatic version of B.
- M 337C
- Increased compression ratio - Template:Cvt
- M 137A
- Unsupercharged version of M 337 Template:Cvt take-off power. Aerobatics allowed.
- M 137AZ
- As M 137A, with filtered air feed
- M 437
- Gear ratio 0.7:1 Template:Cvt
Applications
Specifications (M 337)
Data from Jane's All The World's Aircraft 1980-81 [1]
General characteristics
- Type: 6-cylinder inverted air-cooled supercharged inline engine
- Bore: 105 mm (4.13 in)
- Stroke: 115mm (4.53 in)
- Displacement: 5.97 L (364.3 in3)
- Length: 1,410 mm (55.51 in)
- Width: 472 mm (18.58 in)
- Height: 628 mm (24.72
- Dry weight: 148 kg (326.3 lb)
Components
- Valvetrain: OHC two camshaft operated valves per cylinder, sodium filled exhaust valve
- Supercharger: Centrifugal
- Fuel system: Low-pressure fuel injection
- Fuel type: Min 72-78 Octane
- Oil system: Dry sump pressure feed system
- Cooling system: Air-cooled
Performance
- Power output: 157 kW (210 hp) at 2,750 rpm (take-off)
- Power-to-weight ratio: 1.06 kW/kg (0.64 hp/lb)
References
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- ↑ J W R Taylor 1980, p.692.
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