I appreciate, and I'm sure others do also, your detailed explanation Terry. All to often explanations get lost in generalities.
So correct me if I'm wrong, please. When in the starting mode, the difference in 6vdc and 12vdc systems is, when in the cranking mode the 12volt starter is receiving 12 volts while the 6volt starter is receiving 6volts, once the engine cranks the 12 volt systems resistor is back in the distributor circuit and reducing the voltage to the coil to aprox. 6volts. The 6volt systems use no resistor.