Al,

I’ve attached a couple of signal traces collected when I had the CAS tooth aligned with the pickup at 35 deg BTDC.

These are at the extremes of RPM or MAP that I would encounter on the ground.  The red trace is the CAS signal and the white trace is the Rotor 1 leading coil control signal.  The trailing coil signal timing is the same.  The coil starts saturating when the control signal goes high and a spark is generated when it goes low.  From the two plots, you can get an idea of the timing change between the two conditions.  The resolution of the measurements is 0.1 ms so the resolution of the timing is about 1 degree.  I probably still have the data to determine the timing at any condition between these extremes if it would be useful.  Most likely, the main thing to see is that with a default mode setting, the coil is fired essentially at the static timing point at 23” MAP and 5200 RPM.

Disregard the dwell time change at low RPM since that has been eliminated with a controller update.

Steve Boese