Not much is known about this design I came across in some papers I had laying around. This motor consists of four magnets on a rotating cam of three magnets placed on spring arms at every 120 degrees on the outside mounting positions. The overall cam diameter should be seven inches. By positioning the outer magnets in these positions a repelling force is put into effect every 30 degrees The repelling action will last for approx 50 degrees. The 20 degree difference should over come the drag and hopefully keep the cam rotating continuously. The strength of the magnets will have a large effect in the amount of power achieved. A slight improvement may occur if more than three magnets say five or even seven or placed on outer springs. This may take some experimenting to work let me know of your success.