The Griffon engine
An easier bolt on but possibly a still easier vibrate off.
My time in engine research just overlapped with some of the guys who had worked on the Merlin. I regarded them with considerable awe. But really a small aeroplane with a huge engine and a single prop has its own downsides. When you blip the throttle on a Merlin powered car, do the wheels on one side come off the ground for a short period? This is a case where an intermediate counter-rotating flywheel might just possibly have benefits.
Biting the hand that feeds IT
