Stratus EA 81
{{Short description|American aircraft engine}}
{{Use mdy dates|date=January 2022}}
{{Use American English|date=January 2022}}
| {{Infobox aircraft begin
| name= EA 81 | image= | caption= }}{{Infobox Aircraft Engine |type=Aircraft engine |manufacturer=Stratus 2000, Inc |designer= |national origin=United States |first run= |major applications=Airdale Backcountry |produced= |number built= |developed from= |variants with their own articles= }} |
The Stratus EA 81 is an American aircraft engine, produced by Stratus 2000 of Corvallis, Oregon, for use in homebuilt aircraft.Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011-12, pages 240-243. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X
Design and development
The engine is based on the Subaru EA 81 automotive engine. It is a four-cylinder, four-stroke, {{convert|1800|cc|cuin|1|abbr=on}}, 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 {{convert|100|hp|kW|0|abbr=on}} at 5400 rpm.
The company seems to have gone out of business in 2008, and production ended.{{cite web|url=https://web.archive.org/web/*/http://stratus2000.homestead.com/|title=Stratus 2000 |website=Internet Archive Wayback Machine |access-date=1 July 2015}}{{cbignore}}
Applications
- Airdale Backcountry{{cite web|url = http://www.airframer.com/direct_detail.html?company=123536|title = Stratus 2000 Inc. (U.S.A.) |access-date = 1 July 2015|work = Airframer|year = 2015}}
- Cessna 150{{cite web|url=http://www.homebuilt.org/vendors/powerplants/stratus.html|title=Homebuilt Homepage - Vendors - Powerplants - Stratus|work=homebuilt.org|access-date=2 July 2015}}
- Zenith CH 601{{cite web|url=http://www.zenithair.com/zodiac/6-subaru.html|title=Subaru Power!|work=zenithair.com|access-date=1 July 2015}}
Specifications (EA 81)
{{pistonspecs|
|ref=World Directory of Leisure Aviation 2011-12
|type=Four-cylinder, four stroke aircraft engine
|bore={{convert|92|mm|in|1|abbr=on}}
|stroke={{convert|67|mm|in|1|abbr=on}}
|displacement={{convert|1800|cc|cuin|1|abbr=on}}
|length={{convert|660|mm|in|1|abbr=on}}
|diameter=
|width={{convert|533|mm|in|1|abbr=on}}
|height={{convert|444|mm|in|1|abbr=on}}
|weight={{convert|84|kg|lb|1|abbr=on}}
|valvetrain=
|supercharger=
|turbocharger=
|fuelsystem=
|fueltype=gasoline
|oilsystem=
|coolingsystem=liquid
|power={{convert|100|hp|kW|0|abbr=on}} at 5400 rpm
|specpower=
|compression=9:1
|fuelcon=
|specfuelcon=
|oilcon=
|power/weight=
|designer=
|reduction_gear=belt-type reduction drive, reduction ratio 2.2:1
|general_other=
|components_other=
|performance_other=
}}
See also
{{aircontent
|see also=*Stratus EJ 22
|related=
|similar aircraft=
|lists= *List of aircraft engines
}}