Well, Ralph. . all we have to do is point to 3W's ignition, which is the same basic piece as the DA ignition, which is the same basic piece as the CH unit, which is the same as . . .. No SMT components, though they are epoxy sealed to the circuit boards, separate controllers and coils with hardwiring between them, and all externally timed using a variable timing pickup unit of some sort.

How long has the 3W unit been around? 15 years??? Trace it's lineage and design back a few decades. . .or more. Same design principles and circuit considerations were in use. Electronic theory and design does not change. . merely the available components.

One thing I'd like to point out, since RCIGN brought it up before. . .the fact that the OLD ignition did not use "Resistor plugs" . . uh. . .CM-6 plugs are NOT resistor plugs, sorry. . . that's why we have the little resistor thingie in the plug cap for a DA ignition. . right??? And, what's the object of having resistance in the secondary/sparkplug side of the ignition circuit?? RF suppression. . plain and simple, and for no other reason. You see. . you don't HAVE to have a resistor type plug, OR resistor cables or a resistor in line with the sparkplug cables. . IF you are not worried about RF radiation and interference. I doubt very much they were really worried very much abou that back in the 30's, when the only "radio interference" they worried about was how badly the HUGE radio interfered with movement around it.