41 Don Smith Device: Completely Air Cored, Primary Outside, Increased Light
Ok this is really cool, air cored step up configuration, cooking 50 watt bulbs with 30 watts or less.
i went back to the small electrode spark gap, and now put the primary around the secondary coils. i just insulated the contact parts and screwed the primary onto the 2 secondaries, they are separated only by the lexan overlap on the factory made coils