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The Lycoming R-680 is a nine-cylinder air-cooled radial engine, the first aero engine produced by Lycoming. The engine was produced in two types the E and B series both are essentially the same, the B4E was available in a trainer version with a front exhaust collector for use without cylinder air baffles. ==Variants== ;R-680-B4E :Rated at 225 hp at 2100 rpm.〔Bridgeman 1988〕 ;R-680-E3A :Rated at 285 hp at 2200 rpm.〔 ;R-680-13 :Rated at 300 hp at 2200 rpm.〔 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「Lycoming R-680」の詳細全文を読む スポンサード リンク
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