Re: HOT COIL

Posted by John T on August 17, 2005 at 19:12:58 from (66.244.90.73):

In Reply to: HOT COIL posted by Clint S. on August 17, 2005 at 15:10:07:

Clint, First of all, if you upgraded to 12 volts but kept the 6 volt coil, shes drawing twice the current it was designed to handle, overheats, and will eventually fry PLUS the excess points current causes them and the condensor to go bad prematurely. Sure, she will have a good strong spark for a while until the coil goes bad or the points or condensor go out.

If its still a 6 volt coil, YOU MUST add a series voltage dropping ballast resistor of around 1.5 to 1.85 ohms at 25 watts or so in series from the ignition switches output down to the coils input. It will drop around 6 volts leaving 6 at the coil as it was designed for. Excess current and heat are enemies of long point and condensor life plus the coil will eventually fail. You should be able to lay your hand on a normally warm coil, but if it gets so hot you cant hold your hand to it THATS TOO HOT.

You may wanna install a fresh condensor n points after you add the series ballast then you ought to be good to go.

John T, retired electrical engineer in Indiana

Follow Ups:

• Re: HOT COIL El Toro 04:49:38 08/18/05 (2)
  • Re: HOT COIL John T 06:45:22 08/18/05 (1)
    • Re: HOT COIL El Toro 06:59:57 08/18/05 (0)

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