Revolve formulas is being discussed in the ControlBooth Scenery, Props, and Rigging forum; So I am looking to build a 16'dia revolve out of 2 layers of .5" plywood on a 90 degree ...

1. ## Revolve formulas

So I am looking to build a 16'dia revolve out of 2 layers of .5" plywood on a 90 degree angle. We plan on using wire rope wrapped around the diameter of the circle and a winch to propel the movement, but we are stuck on how powerful of a winch to use.

What I have been trying to find, is some kind of a formula (if one even exists) for the translation of vertical weight into a horizontal force required to rotate the circle. because it is resting on castors. If anyone knows of some kind of method for figuring this out, it would be much appreciated.

2. ## Re: Revolve formulas

I can ask a friend who is much better with math and motorized revolves than I am. I do know that he gave up on Cable / wire rope and used chain to rotate his revolves. He did have a formula for calculating the load and rotational resistance. There are several factors, among them are how far from center the loads are resting, the inertial coefficient of the castors etc.