Follow up test with a CDI ignition

Post #18 was what I was getting at in the other post on inductive ign. The Xenon lamp in a timing light [ or any lamp for that matter ] takes a certain amount of time to turn 'on'. As rpms increase that time does not change, but the the crank dampener which has the timing markings, is moving faster with more rpm. If the dampener speed [ rpm ] outruns the lamp, it will show up as retarded ign. I tried to find the turn on time for Xenon lamps but could not find anything. Also, timing ights use an inductive ferrite clamp to 'read' the magnetic pulse of the spark; circuitry inside the t/light converts that pulse to an electric signal to turn on the lamp. All this takes time & there is less time as rpms increase. It could add to the retard that shows up when using the t/light.