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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 . 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 , 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.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Arrow 500」の詳細全文を読む スポンサード リンク
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