- BMW VII A 7.3
The BMW VIIa was a water-cooled twelve-cylinder engine derived from the successful
BMW VI .Unlike the BMW VI unit, it had the
magneto s arranged in front of thecylinder banks in order to simplify maintenance.The BMW was employed for the first forced-aspiration experiments with a "mixture blower" (a radial fan located behind thecarburettor ); this led in due course to the development of the BMW IX aircraft engine.Only a few examples of the BMW VII went into operation, in the single-engined version of theJunkers Ju 52 , for example, and in theDornier Wal which Wolfgang von Gronau flew around the world in 1932.
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