Girish Mahajan (Editor)

Rotax 377

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The Rotax 377 is a 35 hp (26 kW), twin-cylinder, two-stroke aircraft engine, that was built by BRP-Rotax GmbH & Co. KG of Austria for use in ultralight aircraft.

Contents

Development

The Rotax 377 features piston-ported, air-cooled cylinder heads and cylinders, utilizing either a fan or free air for cooling. Lubrication is by use of pre-mixed fuel and oil. The 377 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.

The Rotax 377 is no longer in production.

Specifications (377)

Data from ROTAX 377 UL Data Sheet

General characteristics

  • Type: two-stroke air-cooled aeroengine
  • Bore: 62 mm (2.44 in)
  • Stroke: 61 mm (2.40 in)
  • Displacement: 368.3 cc (22.48 cu in)
  • Dry weight: 38.4 kg (84.6 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: 26 kW (35 hp) at 6500 rpm
  • Power-to-weight ratio: 0.67 kW/kg (0.41 hp/lb)

    • References

    Rotax 377 Wikipedia
    (Text) CC BY-SA


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