Kind of back woods for today technology in electronics but it works. Built mostly out of stuff I had laying around in the shop.
The marks on the engine case are about 25 degrees apart but if you notice at full advance it does not go all the way to the high end mark so it looks like the ignition is retarding and advancing about 24 degrees.
The ignition is a RCexl 4.8 volt, Will try to do a HV unit when I get a chance.
I could only get the pictures at one angle, Anywhere else and it would not show the strobe light flashing.