Ah yes, back EMF, I forgot about that. Also with one set of points breaking sooner then the other that seems like only the break set should have a problem with arc over, no? I understand how to read the points to tell how the cap is responding. That’s why I was asking what you thought about matching the cap up with the point gap. So your saying that when the condenser discharges back through the system while the points are open, that you have a basic oscillator circuit, right? You should be able to read the scope trace and adjust the capacitance so it degrades fully for any given time period.
Fun stuff Jerry, thanks, when I was a teenager I use to stand in awe of the guys that really under stood ignition. Oh I understood the basics but I really didn’t understand what all those meters and scopes were telling them about performance. Now that I have been through electronics school in the service and a bunch of NRI course and been collecting and fixing up old radios and test equipment for 15 years the automotive stuff is much less of a mystery.
Waldo, you mean that ’57 Chevy I was drooling all over in high school really is 50 years old??? Where did the last half century go. Hope the next 50 don’t go that fast!!!
Denny Graham
Sandwich, IL

Denny G
Sandwich, IL