Platzer MA 12 P/NissanThe Platzer MA 12 P/Nissan is a German aircraft engine, produced by Michael Platzer of Guxhagen for use in ultralight aircraft.Design and developmentThe engine is a four-cylinder four-stroke, in-line, displacement, liquid-cooled, automotive conversion gasoline engine design. It has a poly V belt reduction drive with a reduction ratio of 2.6:1. It employs a magneto ignition system and produces at 5600 rpm. The engine has a compression ratio of 10.3:1.