Sparky GSX

We typically start our aircraft engines by hand. The procedure is to close the choke and then flip the propellor until it "pops" - usually 3 to 5 flips. Then open the choke and flip the propellor until it starts - usually 1 to 3 flips. Smaller engines - 26cc and smaller can be started with small high torque hand held electric starters. I don't think you can assume constant speed for 5 revs for starting.

One other consideration I didn't mention in my previous post is that radio frequency interference is a consideration when designing a CDI for model aircraft. We typically solve this problem by shielding the spark plug wire and cap. Also maintaining as much distance as possible between the ignition and the receiver-servo group.

Speaking for the RC aircraft guys, we are hoping that you electronic & software wizards could develop a simple, reliable and inexpensive ignition that we could build. Once the software was debugged we would download and burn our chips.

Thanks for your interest.

AlZ