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The Rotax 277 is a 26 hp (19 kW), single-cylinder, two-stroke aircraft engine, that was built by BRP-Rotax GmbH & Co. KG of Austria for use in ultralight aircraft.[1][2]

277
Type	Piston aero-engine
National origin	Austria
Manufacturer	Rotax
Major applications	Ultralight aircraft

Development

The Rotax 277 features a single piston ported, air-cooled cylinder head and cylinder, utilizing either a fan or free air for cooling. Lubrication is pre-mixed fuel and oil. The 277 has a single Bosch flywheel magneto generator 12 volt ignition system and is equipped with a 36 mm Bing double float carburetor, with either a hand lever or cable choke.[1][2]

The Rotax 277 is no longer in production.[1]

Applications

Specifications (277)

Data from ROTAX 277 UL Data Sheet[1]

General characteristics

• Type: two-stroke air-cooled aeroengine
• Bore: 72 mm (2.83 in)
• Stroke: 66 mm (2.60 in)
• Displacement: 268.7 cc (16.40 cu in)
• Dry weight: 29.5 kg (65 lb) (complete including reduction drive and exhaust system)

Components

• Valvetrain: piston ports
• Fuel system: pneumatic pump pressurized
• Fuel type: premium unleaded autofuel
• Oil system: premixed in the fuel at 50:1
• Cooling system: fan or free air

Performance

• Power output: 19 kW (26 hp) at 6250 rpm
• Compression ratio: Theoretical 11.8, effective 6.7
• Power-to-weight ratio: 0.64 kW/kg (0.40 hp/lb)

See also

• Hirth F-30
• KFM 107
• Zanzottera MZ 34

References

На других языках

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[de] Rotax 277

Der Rotax 277 ist ein luftgekühlter Einzylinder-Zweitakt-Motor mit 26 PS (19 kW). Er wurde von der österreichischen Firma BRP-Rotax für den Einsatz in Ultraleichtflugzeugen hergestellt.[1][2]

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- [en] Rotax 277

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