The drawing seen below is self explanatory. The weights are in a continuous elliptical orbit around the axle, which causes the wheel to search for balance that is never found.
Both sides of the disk is used with four pegs on each side of disk inside drum. Disk is installed inside drum diameter with a tight fit and locked to the shaft. Fasten your small cables at each quadrant point at the bottom of disk so they angle upwards in direction of rotation towards the peg. This insures that the cable catches the peg correctly everytime without tangle. Moving the pegs out makes it easier to catch the cables. Insure that your weights are rounded on the bottom (bell shaped) so that they naturally stand vertical when landing on the floor of the drum with the cable pointing up.
Note to builders:
The floor of your drum needs to be slightly tapered to the center of the floor on each side of the disk. This insures that your weights will land and remain in this prescribed path on the floor of the drum. You want these weights to land out from the pegs on the drum floor so that a good loop occurs in your cables to catch the pegs correctly everytime.
Calloway Pendulum Engine drawing.
