Rotax 277

Austrian two-stroke aircraft engine


title: "Rotax 277" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["air-cooled-aircraft-piston-engines", "rotax-engines", "two-stroke-aircraft-piston-engines"] description: "Austrian two-stroke aircraft engine" topic_path: "general/air-cooled-aircraft-piston-engines" source: "https://en.wikipedia.org/wiki/Rotax_277" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Austrian two-stroke aircraft engine ::

::data[format=table title="infobox aero engine"]

FieldValue
name277
engine_typePiston aero-engine
manufacturerRotax
national_originAustria
major_applicationsUltralight aircraft
::

| name=277 | image= | caption= |engine_type=Piston aero-engine |manufacturer=Rotax |national_origin=Austria |first_run= |major_applications=Ultralight aircraft |produced= |number_built= |developed_from= |variants_with_their_own_articles=

The Rotax 277 is a 26 hp, single-cylinder, two-stroke aircraft engine, that was built by BRP-Rotax GmbH & Co. KG of Austria for use in 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.

The Rotax 277 is no longer in production.

Applications

Specifications (277)

and start a new, fully formatted line with -- |ref=ROTAX 277 UL Data Sheet |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) |length= |diameter= |width= |height= |weight=29.5 kg (65 lb) (complete including reduction drive and exhaust system) |valvetrain=piston ports |supercharger= |turbocharger= |fuelsystem=pneumatic pump pressurized |fueltype=premium unleaded autofuel |oilsystem=premixed in the fuel at 50:1 |coolingsystem=fan or free air |power=19 kW (26 hp) at 6250 rpm |specpower= |compression=Theoretical 11.8, effective 6.7 |fuelcon= |specfuelcon= |oilcon= |power/weight=0.64 kW/kg (0.40 hp/lb) |designer= |reduction_gear= |general_other= |components_other= |performance_other=

References

References

  1. [[Rotax. (n.d.). "ROTAX 277 UL - 26 hp Fan Cooled".
  2. Raisner, William: ''LEAF catalog'', pages 6-105. Leading Edge Airfoils, 1995.

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air-cooled-aircraft-piston-enginesrotax-enginestwo-stroke-aircraft-piston-engines