gutterman.......again what part of use NO RESISTOR don't you understand??? A 12-volt coil is designed to be used with 12-volt electrical system, flame-thrower or not.
But heres the deal with a "flame-thrower" and the UNNECESSARY ceramic ballast resistor. It will output about 40-kilovolts of sparkie power with 12-volts. Great for jumping 0.065" (1/16") gapped plugs or oil fouled plugs. When you cut the volts down with the UNNECESSARY ceramic resistor, you probably have about 25-kilovolts of sparkies. You need about 15-kilovolts of sparkie power to jump regular clean 0.025"-gap sparkies. So you have plenty of sparkie power for even worn fouled plugs with yer resistorized flame-thrower.
Why would you want 40-kilovolts of sparkies??? WIDE GAP sparkies sparkle for eazier starting and smoother idle and still will sparkle for 8,000-rpms racing engine.
Biggest problem with 40-kilovolts is the insulation of the sparkie wires. It hazzta be fresh and soft and limp and copper stranded. OLD DRY CRACKED sparkie wire will have them lazy sparkies dancing on the outside of the insulation 'stedda' jumpin the gap inside the cylinder head. ......HTH, Dell, yer self-appointed sparkie-meister
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Today's Featured Article - Madison's County - by Anthony West. Philip Madison has been a good friend of mine for quite some time. He has patiently suffered my incessant chit chat on the subject of tractors for longer than I care to remember, and on many occasions he has put himself out, dropped what ever it was he was doing, to come and lend a hand cranking handles, or loading a find onto a trailer. Although he himself has never actually owned or restored a tractor, he was always enthusiastic and always around helping with other peoples projects.
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