It"s all about dwell time and magnetic saturation . A standard coil have enough capacity to spark a V8 at 5500rpm. No problem to handle a four banger running 2000. The coil is fully saturated long before the next spark is required. There is a limit to coil saturation, after a point more is not better. The gain in energy and increase in voltage with electronic switching vs mechanical switch. It"s the instant and abrupt inturption of primary current that obtains the fastest instantaneous collapse of the coil"s magnetic field. Points dribble, arc and sputter which slows the collapse of the magnetic field. Voltage, current and power is all about quicker switching.
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Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
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