Lee -

Again, you're correct, but the question was not where the torque was applied, but what mechanical advantage could be figured at various lever lengths. I see no way to figure that without some formula similar to the "Ratio of Circumferences". The question (at least in my mind) is what circumference to use for the absent formula circumference element. We know the lever circumference. I think it's the mean thread diameter, but not really sure.

Frank

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