I thought the system was ingenious. They use the same ignition coil as the apposed twin, but it is only firing one plug so the spark is twice as intence. There is the extra expense of two extra magnets in the flywheel, but it is in almost perfect balance. The wiper shorts out the plug you don’t want to fire. The down side? When you do a tune up and are cleaning and adjusting the points – you also have to clean the inside of the flywheel. A second modern charging coil and rectifier could be installed for lights or accessories. . . 😆
