With apologies to the horse, that's not true. Using the shield as the grounding path eliminates the need for any airframe electrical connection. It would work in a plastic or wooden airplane. I see no reason to rely on the airframe for magneto switch operation.interstellardust wrote:It seems to me that either method depends on having the mag case grounded to the crankcase through the mag attachment bolts, then around the ...
Ignition switch ground
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