Conversion of Super A From 6 volt to 12 volt

Richard Mat · Apr 22, 2009

Just bought this super A and it has a 12 volt battery and the original generator on it with a regulator mounted below. I assume the regulator is a 12 volt. My question is none of the lights work so maybe he blew them when converting. Do I go with 12 volt bulbs now in all and what about the starter which I think is still 6 volt. All this sounds confusing but the tractor cranks everytime even though the starter is a little whinnie. I am interested in getting all the lights working now. If I go with 12 volt bulbs can I leave the leave the origanl generator on there and the starter? Would love to hear your opinions on this and what to do.
Richard/NC

Mike Groom · Apr 22, 2009

I would check to see how many volts the gen. is putting out,it may have been converted to 12 volt.put a meter across the batt. terminals and see what it reads,then I would put 12 volt bulbs in if it reads 12 volts.You can leave the starter at 6 volts it should be fine as long as you don't crank for a long time.

garytomaszewski · Apr 22, 2009

What makes you think that the "original" generator is indeed original and not 12 volts; I cant tell by looking can you ? Very little is needed to convert, 12 volt bulbs, 12 volt battery, 12 volt generator/regulator, 12 volt internal resistor coil, starter is fine as long as you don't crank to long.

Anonymous-0 · Apr 22, 2009

You need to see the tag on the gen. If it has a red background it is a 12v. Sounds like you have a mess to straighten out. First which post on the batt is ground as that mite give a clue what you have. The reg underneath mite say what voltage and what ground it needs to operate. Over the yrs many old tractors were messed with in the charging systems so it is hard to tell what you have now. Best would be to take the gen and reg to a shop and let them determin just what it is then go from there

John B. · Apr 22, 2009

You can just put in 12 volt bulbs to cure the lighting question.

They usually stamp the volt rating on the under side of voltage regulators and wether it's a neg or pos ground regulator.

Your A most likely has a magneto for an ignition system so no need to worry about that.

Don't run the charging system with the battery disconnected, you will burn out all the bulbs even if they are 12 volts. The battery needs to be in the circuit while the generator is running. The battery is a load that the regulator senses and adjusts the voltage output accordingly. If the battery is not in the circuit the regulator senses high resistance and tells the generator to over come the high resistance by raising the voltage.

Conversion of Super A From 6 volt to 12 volt

Richard Mat

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Mike Groom

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garytomaszewski

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Anonymous-0

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John B.

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