Peter Nunn wrote:

Very interesting,
However the basic idea of what I am doing is that the ignition system works
without an external power source.  Same idea as being able to kill the
master switches and have the engine running should the need arise.
I would prefer to use magnetic sensors in a harsh environment rather than
exposed photodetectors.
Never fear it looks like I will have to hand crank the damn thing and work
it all out, I am sure the 3:2 ratio is correct as is the 2:1 ratio.  Will
report back when the riddle is all solved.

regards

The 3:2 ratio is of no consequence to what you are doing. You can completely 
forget that. Just remember the rotor turns once for each three revs of the 
e-shaft and the engine fires once per rev... per rotor. It also fires once as each
rotor face becomes near perpendicular to the spark plugs.

You could use inductive pickups on a flywheel triggered systems as well.
That too would work on ANY engine. I just like the LED systems better.
Cleaner pulse.

Paul Lamar
 
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