It is generally not realised that excess energy can be obtained from pulsing a flywheel or other gravitational device.
This fact has recently been stressed by Lawrence Tseung who refers to the extra energy obtained in this way as being "Lead-out" energy. This gravitational feature has been part of university Engineering courses for decades, where it has been taught that the loading stress on a bridge caused by a load rolling across the bridge is far less than the stress caused if that same load were suddenly dropped on to the bridge.
A.C. Generator output
Belt not fully tight,
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