Bob said: (quoted from post at 12:54:27 01/18/10) That sounds like a good story, but I have a hard time believing it's factual.
As the governor weights fly outward (indicating SPEED) the movement of the weights/governor mechanism would act to close the throttling valve, restrict steam flow (throttle back the engine).
The only way there can be full steam flow is if the weights remain in their inward position, at which point the governor will allow full steam flow.
As good as it may sound to those who don't know how a flyball governor works, I SUSPECT this is a my, much like the brass monkey/cannonball thing.
Well, Bob....
4. balls to the wall
To go at full (unregulated) power
Steam engines had mechanical regulators that consisted of a pair of hinged lever arms with a ball on the end of each arm, as the engine sped up the centrifugal force caused the arms to raise up closing a valve. If you adjust the regulator so that the arms go to horizontal (with the balls pointing to the wall) without closing the valve you are not limiting the speed of the engine.
When the captain called for balls to the wall, we stoked the fire and pushed the throttle to full.
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