The formula is: double the number of turns of wire and use smaller wire. As I recall you double the number of turns and divide the diameter of the original wire by the square root of 2 (1.1414). You might want to check me on that. I'm sure the formula is out there. Doing that will double the resistance per inch (or per foot or per any other length measurement you choose). And that's what you have to do to double the electromagnetic field. If you think about this for a second, the overall volume of wire ought to remain the same, so it will fit. But...as I said before...using a 12v to 6v voltage reducer should be easier. That way, 12v will be provided to the reducer, half of it will be "gone" and the motor will only see 6v.


~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end