The BMW VII was a water-cooled twelve-cylinder aircraft engine derived from the successful BMW VI, and it was not as popular as the VI because of the Great Depression, so only a small number were built. The main change from the VI was a 0.62 ratio propeller reduction gearing system, which let the engine run at higher rpm and power while still driving the same propellers, and the magnetos moved from the back of the cylinder banks to the front for easier maintenance. The crankcase was offered in aluminium alloy or Elektron. The engine was first built in 1928 and passed its acceptance tests in June 1930. A few went into service in the single-engined Junkers Ju 52 and in the Dornier Wal that Wolfgang von Gronau flew around the world in 1932, and experiments with a mixture blower on the VII led to the BMW IX.
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Source BMW VII (Wikipedia)
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Source BMW VII (Wikipedia)
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Source BMW VII (Wikipedia)Lead, makerQuote, Lead, maker
The BMW VII was a water-cooled twelve-cylinder engine derived from the successful BMW VI.
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1. BMW VII (Wikipedia)
Lead, production
The engine was first built in 1928 and passed its acceptance tests in June 1930.
Lead, cylinders
The BMW VII was a water-cooled twelve-cylinder engine derived from the successful BMW VI.
Lead, maker
The BMW VII was a water-cooled twelve-cylinder engine derived from the successful BMW VI.
In Group: Piston Aero Engines, Lead
The BMW VII was a water-cooled twelve-cylinder engine derived from the successful BMW VI.
Exemplifies: Aviation, Lead, mode
The BMW VII was a water-cooled twelve-cylinder engine derived from the successful BMW VI.
Of Make: BMW, Lead, make
The BMW VII was a water-cooled twelve-cylinder engine derived from the successful BMW VI.
Part Of: Junkers Ju 52, Operational history
Only a few examples of the BMW VII went into operation, in the single-engined version of the Junkers Ju 52, for example, and in the Dornier Wal which Wolfgang von Gronau flew around the world in 1932.
Part Of: Dornier Do J Wal, Operational history
Only a few examples of the BMW VII went into operation, in the single-engined version of the Junkers Ju 52, for example, and in the Dornier Wal which Wolfgang von Gronau flew around the world in 1932.
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