[comdpa]

I should have been more explicit...I was really asking "does the pivot supply any power in swinging."

From the book, it is as per tongzilla says.

Pivot is not a component in 6-B, the power package.

But to raise a point that tongzilla made on the pivot being "the massive rotor", one can question

"the faster we turn the rotor, does it mean longer shots?"