Arrow 500
| {{Infobox Aircraft Begin
| name=Arrow 500 | image= | caption= }}{{Infobox Aircraft Engine |type= Two-stroke aircraft engine |manufacturer=Arrow SNC |national origin=Italy |first run= |major applications= |produced= |number built= |program cost= |unit cost= |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.Cliche, Andre: Ultralight Aircraft Shopper's Guide 8th Edition, page G-1 Cybair Limited Publishing, 2001. {{ISBN|0-9680628-1-4}}Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, page 70. BAI Communications. {{ISBN|0-9636409-4-1}}
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. 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.
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.
The tuned exhaust supplied with the engine has been criticized as "cumbersome" and needing modification to fit most aircraft.
Specifications (Arrow 500)
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|type=Twin-cylinder, horizontally opposed two-stroke aircraft engine
|bore=
|stroke=
|displacement=500 cc (30.51 cu in)
|length=
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|weight={{convert|88|lb|kg|0|abbr=on}}
|valvetrain=reed valve
|supercharger=
|turbocharger=
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|oilsystem=premixed oil and fuel
|coolingsystem=air-cooled
|power={{convert|65|hp|kW|0|abbr=on}}
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|reduction_gear=gearbox
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See also
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