Simplest P.M. Model

[P-Motion]

With this design, there are no moving parts, no watsed motion or energy.
It relies on torque being developed by the disc displacing its' own mass.
I call it counter-balanced leveraged motion.
When the counter balance is lifted (the gap is being crossed), it is given linear potential. This allows the two lower weights to generate torque conserving the momentum of the counter-balance.
Then when the standard radius is resumed, the top weight will be in (spin) balance with the two lower weights. Yet if you look closely, the two lower weights will be moving (vertically) a greater distance.
This will mean that less resistance is created by the top weight. By allowing the two lower weights to maintain their momentum longer will allow for a better chance of a working model being possible.