Hall effect trigger system.

This will be the triggering system. There are 2 disks , the top larger one I call the start disk and the lower smaller disk the run disk.

The start disk will be positioned to deliver the spark at 3 degrees after top dead center (ATDC) and the run disk set for 28 degrees before top dead

centre (BTDC) this solves any problem with kick back during hand starting.

The slots in the run disk are 8mm which allow about 2 ms of dwell at maximum RPM and the start disk slots are 5.5 mm which give plenty of dwell for

starting and idling but anything above 2500 RPM there would not be enought time for the coil to charge so the engine would not operate past 2500 RPM.

With the dwel time restricted to the minimum needed to produce a good spark at max RPM the average current is only 1/2 an amp at cruse RPM.

The peak current is 5 amps in run mode during cruse and 10 amps during starting which creates a very high energy spark.