Bob, respectfully, I don"t know if I agree with you. Your picture only shows the flyball force system. There is also a spring system that is acting in the opposite direction to the flyball force which opens the throttle. they must both be present to control the rpm.
When the throttle lever is applied to increase rpm there is a force applied to a spring which transmits the sping force to open the throttle position to achieve a higher rpm. As the rpm increases the flyballs apply an opposing force to tend to close the the throttle and when the forces are balanced the throttle remains in an increased position to maintain the higher rpm.
If the load increases, the rpm starts to drop which reduces the flyball force and the spring drives the throttle more open to tend to hold the rpm. If the load decreases, the speed tends to increase and the flyball force increases and tends to close the throttle again to try to maintain speed. When max rpm is commanded, there is usually a stop to keep the throttle going beyond a certain point or the flyball lever is at a right angle and can no longer apply an opposing force. At least that"s the way I understand it. I don"t know how you could explain how the governor allows increasing the speed by your statement.
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