Although different coils are capable of different voltages a high tension coil will only produce the voltage it must develop to get to ground be it across the plug gap, or past the insulation to some other ground. Thats why one should never crank an engine with the plug wires disconnected, be it a car engine or a lawn mower as the coil can destroy itself building voltage trying to get to ground, some rather quickly, Honda small engines are particularly bad about that. Some magneto actually have a internal protection that allows too high a voltage to arc to ground. To answer your question yes, reducing plug gap reduces the voltage required but you have other issues or bad coils.
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Today's Featured Article - A Brief History of Tractors in Australia - by Bob Kavanagh. After Captain Cook's exploration of the east coast in 1770 the British Government decided to establish a penal colony in Australia. The first fleet arrived in 1788 and consisted mainly of convicts who were poorly equipped and new little of farming techniques. The colony remained far from self-supporting and it was not until the early 1800's that things started to improve. Free settlers started to arrive, they followed the explorers across the mountains and where land was suitable set up farms. T
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