Someone posted a link on the bessler forum, in support of their view saying "all forces in closed systems are conserved. It's widely available knowledge." The implication seemed to be that because of this fact we were all wasting our time trying to duplicate Bessler's wheel.
The first line of the link says "In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves."
You can't argue with this - it is demonstrably true. However it doesn't apply to Bessler's wheel. Isolated systems are, as the definition suggests, closed sytems without any access to external sources of energy.
But in a gravitywheel such as I maintain, Bessler's was, if you take away the gravitational force the wheel will remain stationary, therefore it cannot possibly be described as an isolated system. Gravity is external to the wheel.
So although the law of Conservation is correct the particular ramifications alluded to, do not apply in this case.
It is frequently argued that Bessler did not state in precise language that his wheel depended entirely on gravity and therefore it must have required some additional force to operate. I don't think anyone has come up with a creditable alternative force and in my opinion there isn't one - there is only gravity and there is no physical reason why it should not do.
So Bessler may have only said that - "these weights are themselves the PM device, the essential constituent parts which must of necessity continue to exercise their motive force (derived from the perpetual motion principle) indefinitely - so long as they keep away from the cemntre of gravity." - but that is as close to saying it was driven by gravity as you can get without actually saying so!
I have argued this point since I first expressed it in my book, "Perpetual Motion; An Ancient Mystery Solved?" in 1997 and I see no reason to change it.
JC