Quote:
Originally Posted by Ether
If there were a stationary attachment point located vertically above the pivot, and of sufficient height, one could secure the tubing to that point and to the arm. That would provide minimum torque at noon and maximum torque (of opposite signs) at 3 and 9 o'clock.
Barring such an arrangement, what other options do you have in mind?
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I think we can assume a suitable attachment point vertically
below the pivot. A short extension on the opposite side from the arm would provide a way to use a downward force to counterbalance it.
A sprocket-and-chain scheme can put a "virtual pivot point" anywhere convenient.