Hi Doug,
It is late but maybe a short answer now and a complete look tomorrow.
First, the Atom is an electronic switch that replaces the points is a
magneto type ignition. The SSI is really a Capacitance Discharge Ignition,
CDI and not a magneto despite what some parts lists say. In the CDI, there
is a coil in the stator that generates up to 450 Volt pulses for charging
the Capacitor in the CDI. This coil is of fine wire and many many turns and
the current is small. A Stator for a magneto has no such high voltage coil,
but one with a few turns of heavy wire to set up a current in the primary of
the ignition coil. They are different animals.
In the SSI or CDI the capacitor is charge up typically 180 degrees before
the spark and sometimes the capacitor is charged up in steps that look like
stairs on a scope over maybe 45 degrees of crank rotation. Once the
capacitor is charged it sits there waiting for a trigger pulse to short the
charged capacitor across the primary of the Pulse Transformer. The trigger
coil also has a magnet but puts out a timing pulse less than a degree wide.
I hope this helps. there are more details on my web site.
Ed Stoller
New Fairfield, CT, USA
www.enginesandmagnets.com
