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Re: 49 Farmall M 6V regulator
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Posted by John T on January 13, 2006 at 16:46:24 from (66.244.90.98):
In Reply to: Re: 49 Farmall M 6V regulator posted by Burntgate on January 13, 2006 at 16:21:34:
You dont need near as many of ohms in the 8 volt system ballast resistor (still needs to be power rated) as when you are using say a 6 volt coil on a 12 volt system. You could get by with none, lots of people dont use any on those 8 volt set ups, but the points and coil would still be running at just a tad over current and warmer. Instead of a typical 1.5 ohms ballast, you may only need 0.5 or less (depends on coils primary resistance) cuz all you wanna do is drop the 8.4 volts down in the 6 to 7 range. You can likely buy some around 0.5 ohms 25 watt wirewound power resistors at your local Rat Shack. The limiting factor is you dont want much over 4 to 5 amps flowing through the coil and being switched by the points. Ohm law can easily figure it all out for you. John T
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