Can you PROVE you've EVER seen EVEN ONE coil with an INTERNAL RESISTOR, as opposed to simply more windings?
I think the idea of the almost "non-existant" "INTERNAL" resistor is REALLY a persistant MYTH.
Just because the coil is marked "NO external resistor required" does not mean there's a DISCRETE resistor inside, just more primary turns.
By FAR the most space inside a coil is taken up by the SECONDARY windings. The PRIMARY winding, which is what we are concerned about here, takes up a small portion of the space inside an ignition coil, and there is PLENTY of room for increasing the number of primary turns.
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Today's Featured Article - A Cautionary Tale - by Ian Minshull. In the early 1950s my father bought an Allis Chalmers B and I used it for all the row crop work with the mangolds and potatoes, rolling and the haymaking on our farm. The farm and the Allis were sold and I have spent a lifetime working on farms throughout the country. I promised myself that one day I would own an Allis. That time event
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