Re: How do Atom Computer Ignition modules work?

[John]

Tubs said it well.

Because the points move with the coil, you get the max spark condition at any point of spark advance. This is what I have been trying to explain. The critical timing for max spark, (which is set by the geometry of the coil laminations, the magnets, and the timing of the points opening) is not affected by the position of the spark advance. That is the genius of the rotatable mag plate. The plate insures that the correct geometry for "max" spark is maintained at any point of spark timing relative to TDC.

Of course the spark advance is critical. But you get your cake and eat it too: Ideal spark advance and ideal spark energy.

JV