Dr.Jeff
True Classic
Ya I never quite understood why they even went that route. As you say resistor plugs or wires have been the norm for many decades.They are not really needed
Another interesting design of rotor is one that acts as a rev limiter. There is a switch in it that disconnects the spark from crossing when the unit reaches a pre-set RPM. Then as it slows down the switch is reset and back to spark. It's primitive but it works. Although now so many ignitions have the feature built in that it's not used anymore. Fits standard Bosch dizzys so could be added to the X.