Posted by John T on September 25, 2014 at 17:09:43 from (216.249.72.121):
In Reply to: 6 volt ignition coil posted by mike/holly jones on September 25, 2014 at 13:28:06:
Hopefully the HV secondary volts will rise high enough to arc jump current across the plugs gap, and sort of like JMOR posted, that depends upon:
The Gap distance (typical maybe 0.020 to 0.030 stock in an old tractor) ,,,,,,The Medium (fuel and compression) in which the plug fires.
Also, the voltage will only rise high enough so the arc occurs and no higher REGARDLESS if its a stOck coil or a so called after market HIGH VOLTAGE COIL
Sooooooooo we cant answer the question unless we have a ton more of information and then perform some serious math calculations. A typical old tractor coil may fire in the 5000 to 10,000 volt range, depending again, on plug gap and fuel and compression
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