Posted by Janicholson on March 17, 2019 at 06:59:55 from (24.240.46.228):
In Reply to: Voltage regulator posted by Grandpa love on March 17, 2019 at 06:28:55:
A 6volt coil running on 12 volts draws too much amps and gets hot/burns out. The excessive amps also ruins a set of points in short order. To allow the use of a 6v coil in a 12v system, it is easy and proper to use a dropping resistor (commonly called a ballast resistor) to reduce the voltage to 6 volts. These were commonly used on cars and tractors from the 40s through today, on coil based ignitions. It is not an active voltage regulator like the one to the left in your images. it is a ceramic block or metal bracket with a resistor wire wound inside. 1966 Chevrolet 6 cylinder auto ignition resistor is typical. You could also replace the existing coil with a coil designed for 12v operation. It will be marked with words that say "no external resistor required" Different topic: If you want the tractor to be reliable, and original looking, You will need a 12v generator and a 12v regulator to replace those already on the tractor. If you want reliable charging ald less cost, you can put a one wire alternator on in place of the existing generator. If that is the case, let us know and we can help. Also the lights will need to be changed to 12v to avoid burning out. Jim
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