.....at : https://youtu.be/YN6mCo (https://youtu.be/YN6mCocYVs)cYVsU
     and his possible "formula" (simplified " principle" design ) at :
     http://www.geocities.ws/iacob_alex/Some_Drafts/text028.JPG (http://www.geocities.ws/iacob_alex/Some_Drafts/text028.JPG)
     ...is a common lever(age), playing a cyclical variaČ›ion of a single arm : long arm (top position) -short arm (down position) , so to obtain a continuous gravity unbalance on the same side of the fulcrum , due to the gravity fall and rotational inertia.
     Al_ex
			
			
			
				youtube link you posted says : Video not available
			
			
			
				   Hi !
The rectified address on youtube : https://youtu.be/YN6mCocYVsU
 Errare humanus est...
  Al_ex
			
			
			
				The wheel of destiny only keeps going because of the tremendous amount of energy put into it by the performer.  And in addition there is no energy being extracted from the moving wheel.