Actually, the "COIL" may or may NOT be a fable, it may well have the capability to achieve 40,000 volts on its HV terminal, but youre right, most old tractors probably fire the plugs at more like 10,000 to under 20,000 volts. I guess its safe to say firing of the plugs at 40,000 volts in low compression gasoline tractor engines with plug gaps in the 0.020 to 0.040 range IS INDEED LIKELY A FABLE LOL
The actual voltage necessary to cause current to arc jump across a spark plug gap depends on THE PLUG GAP,,,,,,,,,THE COMPRESSION,,,,,,,THE MEDIUM (fuel type and mixture) IN WHICH THE ARC OCCURS and we dont have that info in front of us.
Yep the HV in those old cathode ray tv tubes could really cause some poppin n crackin n snappin OUCH LOL
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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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