Originally posted by OrionLightShip
In that statement is your answer. Seems to me the device has achieved a point in which it is powering itself. Why else would input power drop...?
Recall Jim Murray talking about how motors are also generators; generators are also motors.
Hmmm, so if internally the generator portion of the device begins to produce more power, then the motor gets more power to motor with. If this situation isn't governed, the device RPM will continue to increase until it grenades itself. That's a problem I wouldn't mind having. But what we see in most devices is for some reason they govern themselves--shaft speed stabilizes as well as input power. Back to the generator portion becoming a motor and the motor portion becoming a generator. That's not what we are after. We need each section of the device to remain only doing its needed task and not switching roles like when a load is applied or shaft speed changes. This is were geometry becomes key.
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