RE: the prefect platform for aerial photography
Hey, Bill,
Glad you don't use the 4-T's method of checking electric fences: "T-T-T-Turn the dang thing off!!"
Well, suppose the ignition IS the problem, what would the next step be? I've got limited experience with gas engines used in aircraft. While probably already familiar to you and Steve, these steps would occur to me, a newbie:
1. Check the spark plug wire for cracks, etc. or just replace it with a new wire.
2. Use a resistor-type spark plug.
3. Use shielded braid around the spark plug wire, like the full scale aircraft do, and make sure you ground one end of the braid to the engine.
4. Wrap aluminum foil or tape around the ignition module (taking care not to get too close to the hot terminals, and inducing an arc over). Ground this foil shield to the engine.
5. Use short leads on the radio, electronics gear, or shield them (Not the antenna!) with foil and ground the foil to the engine.
It helps me to itemize things, sorry about including the no-brainers too.
Cheers,
Dave