There's a bit of a difference between a battery-fired ignition and one that uses spinning magnets to provide energy for the coil, Crash. The current lawnmower engines. .some have CD ignitions with electronic triggers (this seems similar, no?) yet weedies use magnetos (with transistorized "triggers" inside the magneto). OLD style stuff used points and condensor along with the magneto (spinning magnets) to trigger the plugs. Some even had (GASP). . "advance" mechanisms.

Suffice to say, these ignitions, the principles behind them, the basic design as far as what the components do, and how they operate, have all been around for a very long time. They are proven, reliable, dirt simple in theory and design, and work. Just what we, as modellers, need.

Seems everyone would be applauding the fact that a proven design, and principles, were firing off the plugs in our engines. . kind of like, magnetos in modern aircraft. . dirt simple,reliable, hard to break, and almost never fail.