Rotax 532

{{short description|Austrian two-stroke aircraft engine}} {{Use dmy dates|date=March 2023}} {{Use American English|date=March 2023}}  {{infobox aero engine |name=532 |image= |caption= |engine_type=[[Piston]] [[aircraft engine|aero-engine]] |national_origin=[[Austria]] |manufacturer=[[Rotax]] |first_run= |major_applications={{ubl|[[Murphy Renegade]]|[[Blue Yonder Merlin|Merlin GT]]}} }}

The '''Rotax 532''' is a {{convert|48|kW|hp|0|abbr=on}} [[two-stroke cycle|two-stroke]], two-cylinder, [[rotary valve]] engine, liquid-cooled, gear reduction-drive engine that was formerly manufactured by [[Rotax|BRP-Rotax GmbH & Co. KG]]. It was designed for use on [[ultralight aircraft]].<ref name="Raisner">Raisner, William: ''LEAF catalog'', pages 6-105. Leading Edge Air Foils, 1995.</ref>

==Design==

The 532 features liquid-cooled cylinder heads and cylinders with a rotary valve inlet. Cooling is via one or two externally mounted radiators. Lubrication is by use of pre-mixed fuel and oil at 50:1. The 532 has a single [[Robert Bosch GmbH|Bosch]] flywheel [[magneto ignition]] system. It can be equipped with either one or two piston-type [[carburetor]]s. It uses a manifold-driven pneumatic fuel pump to provide fuel pressure.<ref name="Raisner" />

The engine's propeller drive is via a Rotax type B or C style gearbox. The standard engine includes a muffler exhaust system and an intake air filter. The standard starter is a [[recoil start]] type, with an electric starter optional. An integral [[alternating current]] generator produces 12 volts.<ref name="Raisner" />

The Rotax 532 was replaced in production by the improved [[Rotax 582]] engine design. The 582 increased the cylinder bore from the 532's 72 mm to 76 mm. This increased the displacement from 521.2 cc to 580.7 cc, an increase of 11%. The increased displacement flattened out 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" /><ref name="Manual">{{citation|title = Bombardier Rotax 532 Operator's Manual|author=[[Rotax]]}}</ref>

==Applications== {{columns-list|colwidth=30em| *[[Aero Designs Pulsar]] *[[Aero Dynamics Sparrow Hawk]] *[[AeroLites Bearcat]] *[[Australian LightWing GR532]] *[[Aviasud Mistral]] *[[Avid Flyer]] *[[Biplanes Of Yesteryear Mifyter]] *[[Denney Kitfox|Denney Kitfox Model 1]] *[[Early Bird Jenny]] *[[Blue Yonder Merlin|Macair Merlin GT]] *[[Murphy Renegade]] *[[Teratorn Tierra II]] *[[Tiger Club Development Sherwood Ranger]] *[[Wombat Gyrocopters Wombat]] }}

==Specifications (Rotax 532)== {{small|Reference: Raisner and Bombardier Rotax 532 Operator's Manual<ref name="Raisner"/><ref name="Manual"/>}} {{pistonspecs|   |type=2-cylinder, 2-stroke, rotary valve, oil-in-fuel or oil-injected lubrication, dual carburetors, single ignition |bore=72 mm (2.83 in) |stroke=64 mm (2.40 in) |displacement=521.2 cm³ (31.81 cu in) |length= |diameter= |width= |height= |weight=46.8 [[kilogram|kg]] 103.2 [[pound (mass)|lb]] with recoil starter, two carburetors, full radiator, exhaust system and B gearbox |valvetrain=rotary inlet valve, piston ported exhaust |supercharger= |turbocharger= |fuelsystem= |fueltype=premium unleaded: RON 90 octane or higher leaded or unleaded or AVGAS 100 LL |oilsystem=oil-in-fuel (pre-mix) at 50:1 |coolingsystem=liquid cooled |power=48 [[kilowatt|kW]] 64 HP SAE @ 6500 [[revolutions per minute|RPM]] |specpower= |compression= |fuelcon= |specfuelcon= |oilcon= |power/weight=0.62 hp/lb (0.99 kg/kW) }}

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

==References== {{reflist}}

[[Category:Two-stroke aircraft piston engines]] [[Category:Rotax engines]] [[Category:Air-cooled aircraft piston engines]] [[Category:Twin-cylinder engines]]