<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. --> {{infobox aero engine | name=Arrow 500 | image= | caption= |engine_type= [[Two-stroke]] [[aircraft engine]] |manufacturer=[[Arrow SNC]] |national_origin=[[Italy]] |first_run= |major_applications= |produced= |number_built= |developed_from= |variants_with_their_own_articles= }}
The '''Arrow 500''' is a twin-cylinder, [[horizontally opposed]], [[two-stroke]], single or dual ignition, [[aircraft engine]] that was designed for [[ultralight aircraft]] by [[Arrow SNC]] of [[Italy]].<ref name="Cliche">Cliche, Andre: ''Ultralight Aircraft Shopper's Guide'' 8th Edition, page G-1 Cybair Limited Publishing, 2001. {{ISBN|0-9680628-1-4}}</ref><ref name="Aerocrafter">Purdy, Don: ''AeroCrafter - Homebuilt Aircraft Sourcebook'', page 70. BAI Communications. {{ISBN|0-9636409-4-1}}</ref>
The Arrow family of engines are modular in design and share the same pistons, cylinders and gearboxes assembled around different crankcase designs, giving one-, two- or four-cylinder engines.<ref name="Cliche" /> Arrow engines are no longer in production.
==Development== The 500 is a conventional twin-cylinder engine that weighs {{convert|88|lb|kg|0|abbr=on}}. The engine features single or optional dual ignition, reed valve induction, free air cooling, tuned exhaust system, a single slide venturi-type Bing [[carburetor]], fuel pump, [[Nikasil]] cylinder coatings. The engine was offered with a gearbox reduction system that included a one way clutch. Starting is electric starter with no provision for a [[recoil starter]].<ref name="Cliche" />
The 500 produces {{convert|65|hp|kW|0|abbr=on}}, runs on premium unleaded auto fuel and has a recommended [[time between overhaul]] of 400 hours.<ref name="Cliche" /><ref name="Aerocrafter" />
The tuned exhaust supplied with the engine has been criticized as "cumbersome" and needing modification to fit most aircraft.<ref name="Cliche" />
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==Specifications (Arrow 500) == {{pistonspecs| <!-- If you do not understand how to use this template, please ask at [[Wikipedia talk:WikiProject Aircraft]] --> <!-- Please include units where appropriate (main comes first, alt in parentheses). If data are missing, leave the parameter blank (do not delete it). For additional lines, end your alt units with )</li> and start a new, fully formatted line with <li> --> |ref=Cliche<ref name="Cliche" /> |type=Twin-cylinder, horizontally opposed two-stroke aircraft engine |bore= |stroke= |displacement=500 cc (30.51 cu in) |length= |diameter= |width= |height= |weight={{convert|88|lb|kg|0|abbr=on}} |valvetrain=[[reed valve#Two-stroke engines|reed valve]] |supercharger= |turbocharger= |fuelsystem= |fueltype= |oilsystem=premixed oil and fuel |coolingsystem=air-cooled |power={{convert|65|hp|kW|0|abbr=on}} |specpower= |compression= |fuelcon= |specfuelcon= |oilcon= |power/weight=
|designer= |reduction_gear=gearbox
|general_other= |components_other= |performance_other= }}
==See also== {{aircontent <!-- include as many lines are appropriate. additional lines/entries with carriage return. --> |see also= *[[List of aircraft engines]] *[[Hirth 2706]] *[[Hirth 3202]] *[[Rotax 532]] *[[Rotax 582]] |related=<!-- related developments --> |similar aircraft=<!-- similar or comparable aircraft --> |lists= }}
==References== {{Reflist}} <!-- ==External links== -->
{{Arrow SNC}}
[[Category:Arrow SNC engines]] [[Category:Air-cooled aircraft piston engines]] [[Category:Two-stroke aircraft piston engines]] [[Category:1990s aircraft piston engines]] [[Category:Flat-twin engines]]