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Pusher airplanes - with long drive shafts - also suffer a variation on "crank-whip" plus torsional vibration. As individual pistons and individual propeller blades introduce a complex series of vibrations, those vibrations overlap in ways that can shatter a shaft in seconds.
The helicopter industry really only solved torsional vibration problems after they introduced - much smoother - jet engines.
The Bellanca TES 'Blue Streak' was an (ugly)experimental plane with twin Curtiss Conquerer engines, a tractor with the 'pusher' mounted directly behind it in a nacelle large enough for the Flight Engineer access to both engines. The rear engine was geared down, and a drive shaft went to the end of the craft to a 3 blade prop
It was a long range monster for 1930 5000 mile radius range, 2150 gallons of fuel- It was a large tank in the fuselage, and that drive shaft went thru it
LINK
And a model of it, and B&W pics just do not do it justice
It never made the Record setting flight it was designed for, first non-stop flight from Seattle to Tokyo, as in a cross country flight test, that shaft failed, killing all onboard in 1931