Rotax 582

{{short description|Austrian two-stroke aircraft engine}} {{Use dmy dates|date=March 2023}} {{Use American English|date=March 2023}}  {{infobox aero engine |name=582 |image=Quad City Challenger II C-IJJR 06 Rotax 582 installation.JPG |caption=Rotax 582 pusher installation on a [[Quad City Challenger II]] |engine_type=[[Piston]] [[aircraft engine|aero-engine]] |national_origin=Austria |manufacturer=[[Rotax]] |first_run= |status = Production to be completed by end of 2021<ref name="Oconnor24Jul21"/> |produced= 1989–2021<ref name="Oconnor24Jul21"/><ref>{{cite news |url= https://www.rotax.com/de/news/aktuelles/details/id-40-years-of-rotax-aircraft-engines-152.html |title= 40 years of rotax aircraft engines |date= 30 June 2015 |publisher= Rotax}}</ref> |number_built = more than 30,000 (July 2021)<ref name="Oconnor24Jul21"/> |major_applications=[[Quad City Challenger]]<br />[[Blue Yonder Merlin]] }}

The '''Rotax 582''' is a {{convert|48|kW|hp|0|abbr=on}} [[two-stroke cycle|two-stroke]], two-cylinder, [[rotary intake valve]], oil-in-fuel or oil injection pump, liquid-cooled, gear reduction-drive [[aircraft engine]] manufactured by [[Rotax|BRP-Rotax GmbH & Co. KG]]. It is for use in non-certified aircraft operating in day [[visual flight rules]].<ref name="firewall_2013_07_19_kitplanes">Prizio, Dave: [https://www.kitplanes.com/firewall-forward-rotax-service-training/ "Firewall Forward: Rotax service Training,"] July 19, 2013, ''Kitplanes,'' retrieved July 5, 2023</ref>

Production of the engine ended at the end of 2021.<ref name="Oconnor24Jul21">{{cite web|url= https://www.avweb.com/ownership/engines/rotax-to-end-582-ul-engine-production/|title= Rotax To End 582 UL Engine Production|access-date= 15 July 2021|last=O'Connor |first= Kate |work= AVweb|date= 26 July 2021|archive-url= https://archive.today/20210726205732/https://www.avweb.com/ownership/engines/rotax-to-end-582-ul-engine-production/?MailingID=666&utm_source=ActiveCampaign&utm_medium=email&utm_content=Avidyne+Brings+New+Displays+To+AirVenture,+Planespotter+Alerts+F-15E+Crew+About+Engine+Damage&utm_campaign=Avidyne+Brings+New+Displays+To+AirVenture,+Planespotter+Alerts+F-15E+Crew+About+Engine+Damage+-+MONDAY,+July+26,+2021|archive-date= 26 July 2021|url-status= live}}</ref>

==Development== The Rotax 582 is based upon the earlier [[Rotax 532]] engine design and was designed for [[ultralight aircraft]].<ref name="RotaxOwnersMan">{{cite web|url = https://rotax-docs.secure.force.com/DocumentsSearch/sfc/servlet.shepherd/version/download/0681H000002wI8PQAU?asPdf=false|title = OPERATORS MANUAL FOR ENGINE TYPES 447, 503 & 582|access-date = 28 May 2018|last = [[Rotax|BRP-Rotax GmbH & Co. KG]]|year = 2010 |archive-url= https://web.archive.org/web/20201112002139/https://rotax-docs.secure.force.com/DocumentsSearch/sfc/servlet.shepherd/version/download/0681H000002wI8PQAU?asPdf=false|archive-date= 12 November 2020|url-status= dead}}</ref><ref name="Raisner">Raisner, William: ''LEAF catalog'', pages 6-105. [[Leading Edge Airfoils]], 1995.</ref> The 582 increased the bore from the 532 engine's {{convert|72|to|76|mm|abbr=on}}. This increased the [[engine displacement|displacement]] from {{convert|521.2|cc|cuin|abbr=on}} to {{convert|580.7|cc|cuin|abbr=on}}, an increase of 11%. The increased displacement flattened the 532's torque curve and allowed the 582 to produce useful power over a wider rpm range. Reliability over the 532 was also improved.<ref name="Raisner" />

The 582 features liquid-cooled [[cylinder heads]] and cylinders with a [[Rotary valve|rotary intake valve]]. Cooling is via an externally mounted radiator. Lubrication is either by use of pre-mixed fuel and oil or oil injection from an externally mounted oil tank. The 582 has dual independent breakerless, magneto [[capacitor discharge ignition]] (CDI) systems and is equipped with two piston-type [[carburetor]]s. It uses a manifold-driven pneumatic fuel pump to provide fuel pressure. An optional High Altitude Compensation kit is available.<ref name="RotaxOwnersMan" /><ref name="Raisner" /><ref name="firewall_2013_07_19_kitplanes" />

Early in the engine's production the propeller drive was via a Rotax type B gearbox, which offered gear ratios of 2.0:1, 2.238:1, and most common 2.58:1. Later in production type C or E gearboxes were offered with gear ratios of 2.62:1, 3.0:1, 3.47:1, and 4.0:1. (The type E gearbox includes an integrated electric starter motor.) The standard engine includes a wide band expansion chamber exhaust system with an extra after-muffler as optional. The standard starter is a [[recoil start]] type, with an electric starter optional. An integral [[alternating current]] generator producing 170 watts at 12 volts with external rectifier-regulator is optional. The engine includes an intake air filter and can be fitted with an optional intake silencer system.<ref name="RotaxOwnersMan" /><ref name="Raisner" />

By July 2021, more than 30,000 engines had been sold.<ref name="Oconnor24Jul21"/>

In July 2021, the manufacturer announced that the engine's production run will end by the end of the year, although the engine will still be sold until stocks are depleted.<ref name="Oconnor24Jul21"/>

===Limitations=== Rotax recommends teardown and inspection every 150 hours, and overhaul every 300 hours.<ref name="firewall_2013_07_19_kitplanes" />

The manufacturer acknowledges the design limitations of this engine, warning pilots:<ref name="RotaxOwnersMan" />

{{quotation|"This engine, by its design, is subject to sudden stoppage. Engine stoppage can result in crash landings, forced landings or no power landings. Such crash landings can lead to serious bodily injury or death...This is not a certificated aircraft engine. It has not received any safety or durability testing, and conforms to no aircraft standards. It is for use in experimental, uncertificated aircraft and vehicles only in which an engine failure will not compromise safety. User assumes all risk of use, and acknowledges by his use that he knows this engine is subject to sudden stoppage...Never fly the aircraft equipped with this engine at locations, airspeeds, altitudes, or other circumstances from which a successful no-power landing cannot be made, after sudden engine stoppage. Aircraft equipped with this engine must only fly in DAYLIGHT VFR conditions."<ref name="RotaxOwnersMan" />}}

==Applications== [[File:BlueYonderEZFlyerREZ0004.png|thumb|right|[[Blue Yonder EZ Flyer]] showing its Rotax 582 engine installation, including the radiator suspended below the engine.]] [[File:Mainair blade ultralight g-mzbl kemble arp.jpg|thumb|right|[[Mainair Blade 582]]]] [[File:Quad City Challenger II C-IMOM Warp Drive Propeller.JPG|thumb|right|A [[Warp Drive Inc]] propeller mounted to a Rotax 582 on a [[Quad City Challenger II]].]] {{columns-list|colwidth=22em| *[[Acrolite]] *[[Advanced Aeromarine Buccaneer|Advanced Aeromarine Buccaneer II]] *[[Aero Adventure Aventura|Aero Adventure Aventura HP & Sport]] *[[AeroLites AeroMaster AG]] *[[AeroLites Bearcat]] *[[Aeroplast Pluto A-65]] *[[Aeroprakt A-20]] *[[Aeros-2]] *[[Aeros Cross Country]] *[[Aeros del Sur Manta]] *[[Aerosette MH-46 Eclipse]] *[[Aéro Services Guépard Guêpe]] *[[Airbet Girabet]] *[[Airborne Edge]] *[[Airborne Outback]] *[[Airborne XT]] *[[Air Command Commander Elite]] *[[Air Creation GT]] *[[Air Creation Racer]] 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Pulsar]] *[[Vortech Skylark]] *[[WLT Sparrow]] *[[World Seair Corp Seair]] *[[Y2Fly Seahawk]] *[[Zenith STOL CH 701]] }}

==Specifications (Rotax 582)== {{pistonspecs|   |type=two-cylinder, two-stroke, rotary valve, oil-in-fuel or oil-injected lubrication, dual carburetors, electronic dual ignition |bore=76 mm (2.99 in) |stroke=64 mm (2.52 in) |displacement=580.7 cm<sup>3</sup> (35.44 cu in) |length= |diameter= |width= |height= |weight=50 [[kilogram|kg]] (110 [[pound (mass)|lb]]) with electric starter, carburetors, fuel pump, air filters and reduction gear |valvetrain= |supercharger= |turbocharger= |fuelsystem= |fueltype=premium unleaded: RON 90 octane or higher leaded or unleaded or AVGAS 100 LL |oilsystem=oil-in-fuel (pre-mix) or oil injection |coolingsystem=liquid cooled |power=48 [[kilowatt|kW]] (64.4 hp) at 6,500 [[revolutions per minute|RPM]] |specpower= |compression=11.5 (theoretical) - 5.75 effective |fuelcon= |specfuelcon= |oilcon= |power/weight=0.59 hp/lb (0.96 kW/kg) }}

==See also== *[[Rotax#Aircraft engines|Rotax aircraft engines]] *[[Arrow 500]] *[[Hirth 3202]]

==References== {{reflist}}

==External links== {{Commons category}} *[http://www.rotax-aircraft-engines.com/ Company website]

[[Category:Two-stroke aircraft piston engines]] [[Category:Rotax engines]] [[Category:Liquid-cooled aircraft piston engines]] [[Category:Twin-cylinder engines]] [[Category:1980s aircraft piston engines]]