ORIGINAL: Bigboat
I have test today the CDI and find some problems.
Sometimes I missing a spark, sometimes a spark at the wrong time or to muts sparks at the same time.
It seems to me a EMC-problem in the pcb I use, the pic making (or not) his own sparks.
Also the energy for the capacitor is to small when the engine runs high rpm.
If I calculate the power I need (5 Watt), the capacitor must be ~4,7uF instead of 1uF.
Inside the cylinder the pressure is ~12bar on 4000 rpm, with this pressure there isn't a spark anymore.
Back to the drawingbord [&o]
Update, the diode in the powerline must be rotate 180 degrees.
This resolve the *lost spark* problem.
Test to 12.000 rpm (I can't higher with my electric motor) is no problem anymore.