The Fairbanks Morse Diamond opposed-piston engine was an experimental project during WWII. Sponsored by the US Navy, the engine produced 3,000 hp, but only one prototype was built.
What are the advantages and disadvantages of opposed piston engines? - Quora
Ian Pegg (@cluelesspegg) / X
Fairbanks Morse Opposed Piston Engine
Fairbanks-Morse 38 8-1/8: The Immortal Diesel
THE NAPIER DELTIC - HEART OF THE MOST POWERFUL DIESEL IN THE
Diesel Engines Old Machine Press
Martin's Fairbanks Morse page
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August, 2019
Marine Old Machine Press