The Stratus EA 81 is an American aircraft engine, produced by Stratus 2000 of Corvallis, Oregon, for use in homebuilt aircraft.
It is a four-cylinder, four-stroke, 1,800 cc (109.8 cu in), liquid-cooled, gasoline engine design with a belt-type reduction drive with a reduction ratio of 2.2:1.
It employs electronic ignition and produces 100 hp (75 kW) at 5400 rpm.
[1] The company seems to have gone out of business in 2008, and production ended.
[2] Data from World Directory of Leisure Aviation 2011-12[1] Related lists