Remains of a DB-601 series aircraft motor

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You can see the crankshaft at top, with big reduction gears to slow the rotation of the propellor to arounf 1/2 the speed of the crankshaft. The ratios were either 1:1.55 (for fighter planes) or 1:1.88 (for bombers and heavier planes). This engine made 1800 horsepower with water/methanol injection.

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