Jinx,

Regarding pulleys, I can tell you with total certainty, in accord with your
own opinion, the parity of the pulleys' sizes is immaterial, assuming no
friction, and assuming that by "pulley" we mean a freewheeling idler.  The
statement regarding size of the pulleys is a "red herring".

In practice, a larger pulley will have lower losses to friction.  Ball
bearings generally eliminate this concern.

Good luck with your ten thousand year old technology.

James

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