Super A 6 votl to 12 volt

Anonymous-0 · Feb 12, 2011

I am just starting to get the old family Super A running that has been sitting in the barn for about 10 years. While doing that I was considering changing it to a 12V system. Any thoughts on that and does anyone know of some good threads out there on what all is required to do this? I am fairly mechanical but have never tackled this so do not know where to start. Someone told me Delco makes an alternator that works well for this. Thanks for the help

DanR · Feb 12, 2011

It's an easy job. All you need is a Delco one wire alternator, a 12V battery, a piece of 3/8 all thread, 12V light bulbs, and some new wiring to replace any that is worn out.

teddy52food · Feb 12, 2011

Sounds like it will need a battery. Get a 6 volt & give it a tune up & it should be good. Those engines don't need 12 volts to start good. A lot of those conversion jobs come back asking questions.

Anonymous-0 · Feb 12, 2011

Thanks for the help guys. I am not sure which way I am going to go. So the voltage regulator and coil do not need to be changed?

Janicholson · Feb 12, 2011

Do not convert it at this point. They operate well on 6v and it is already there. John T charging system guide (in the archives) is invaluable. The archives is also great to answer many questions. Jim

teddy52food · Feb 12, 2011

If you don't know what you are doing, leave it alone. Fix or replace what needs it on the 6 volt system or have someone else do it.

Faster346 · Feb 12, 2011

Anything smaller than a C or Super C always get left 6v on my farm. Bigger tractors, H's, M's, ect I prefer to have on 12v. My 6v C started today in freezing temps after sitting for a few weeks, just fine. Just make sure you have good 0 or 00 gauge cables, and clean grounds, with a good battery and she'll never let you down.

Shawn in PA · Feb 12, 2011

If you do choose to switch to 12 volts, don"t use a 1 wire alternator, use a 3 wire. The alternator cannot start charging until there is voltage on the field windings, and a magnetic force is created. 1 wire alternators need to be run up to a higher rpm to start charging, and until the cut in speed is reached, the battery is discharging. 3 wire alternators can be externally excited, via the ignition switch, and will start charging as soon as excited. If you switch to 12, the delco 10si or similar, will have a built in voltage regulator. As for the coil, a 12V to 6V external ballast resistor will need to be used to reduce voltage at the coil. Or you have the option to install a internally ballasted 12 volt coil, eliminating the need for an external resistor. I agree with the others guys though. If you have the complete 6 volt system, leave it alone. Shawn

Anonymous-0 · Feb 13, 2011

Thanks Guys you have talked me into leaving it as 6 volt. That is what it has always been (although I must admit most of the time we used the hand crank to crank it) I will buy a new 6V battery and go over all the wires and give here a good tune up and go from there
Thanks again

Super A 6 votl to 12 volt

Anonymous-0

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DanR

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teddy52food

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Anonymous-0

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Janicholson

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teddy52food

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Faster346

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Shawn in PA

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Anonymous-0

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