OK

With help from gr8flyer I think I have finalized the circuit I want to build. I'm going to keep the transformer secondary voltage around 400 volts, but all the components on the power board will be rated at 600 volts or better except the 1N4007 (1000 volts). I eliminated everything except what is needed to fly an airplane. The goal is for easy starts at 300 RPM and advance up to 10,000 RPM, even though the engines seldom see 8500 RPM. Shielding is still a concern but I wont really know until i get it built. I notice the Chinese CDI's are fully shielded, but the Zenoah ignitions have the coil, spark plug wire and cap unshielded. We'll get it figured out.

gr8flyer is helping me with coil. Once I have that I'll finalize the PCB layout and start etching. I'll post progress as I go.

Al Z