Throughout the history of the search for perpetual motion, (for gravity-wheels) the aim has been to get weights to overbalance a wheel by getting them to move, under the force of gravity, into a position from where they can apply their overbalancing effect. And yet we know, because physics tells us so, that such configurations cannot work. Gravity can react to an overbalanced configuration and make the wheel turn, but it cannot make the weight also return to its starting point. So as long as we continue to design wheels which rely on the same old concept we shall continue to fail.
It is apparent from posts by some members of http://www.besslerwheel.com/ that they believe that a separate additional force is required to engineer the movement of the weights into their overbalancing position. Such forces as CF and CP, magnetism, electrostatics and changes in ambient temperature have all been suggested. No-one to my knowledge has come up with a working hypothesis.
It seems to me that what we are all searching for exists but we are not looking in the right place - or rather we are looking but not seeing. Bessler said he found the answer where everyone else had looked. In other words the answer is right there under our noses.