Ken, The wider plug gap will cause the voltage to build to a higher value before the plug fires. This in turn releases more peak RF energy in a shorter time when the plug fires. This produces a much stronger RF pulse; not good if you want the best radio communications in the aircraft band, but great if you want a spark-gap radio transmitter. An Italian guy, Marconi, discovered this about a 100 years ago. Since Wilber and Orville were not talking to ATC yet, nobody much cared then. But now, with our road warrior mind set, we have shielded plug wires, filter capacitors, resistor plug wires, shielded plugs, resistor plugs, lead dress and all manner of tricks to tame the magical genie in AM radio. Sid Wood, Tri-gear KR-2 N6242 Mechanicsville, MD USA sidney.w...@titan.com
From: Kenneth L Wiltrout For those of u that responded, Joe at Revmaster said what did I gap the plugs at, I told him since no instructions came with them I took the average of what they were gapped at in the box and set them all at .030. He said that is probably most of the problem, regap to .016 they are trying too hard to fire and creating to much RF energy-------------------Does this make sense????????