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Confused by what you mean, other than i'm aware there were some early aircraft engines where the crankshaft/pistons were basically stationary and the block itself rotated around them.
As I recall they had some pretty serious gyroscopic effects. Such a design would save the "extra" weight of an additional flywheel, but still may not be as practical. I forget the math but a 25krpm flywheel stores more energy with like a 20lb flywheel than something 10x more stores at perhaps 1/10th the rpm.
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