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Starter 6v or 12v ?

P

P4B

New User
The starter on my 56" 300u needs replacing. The current starter is 6v, but the tractor has been converted to 12v. Should I be changing to a 12v starter ?
 
If youre replacing the starter anyway on a now 12 volt tractor, YEPPERS Id change to a 12 volt starter.

John T
 
Most 6 volt starters work fine on 12 volts. Just don't try to use a 12 volt starter on 6 volts - that will NOT work. The lower the voltage, the heavier the wire used in the windings, and the higher the voltage, the smaller the wires need to be.
 
I would go with a 12 volt starter and then you will need to change the magnetic switch on top(of starter, commonly referred to as being a solenoid) to 12 volt also, it will have the additional terminal to feed battery voltage to ign on start up. Of course, you need to be using the original 6 volt ign coil with a external ballast resistor to get this advantage. Better system though.
 
Can you name any common tractor starter that was originally 6 volt, then hooked to 12 volt, and somehow suffered from it? I have changed many over the years and cannot think of a single circumstance where a 6 volt starter gave any trouble being used on 12 volts.

I'm not saying there isn't one out there, but I haven't seen it happen yet. I changed many Deere, IH,Ford, Oliver, Cletrac, Shaw, Case, and AC.
 
(quoted from post at 11:44:52 01/10/11) The starter on my 56" 300u needs replacing. The current starter is 6v, but the tractor has been converted to 12v. Should I be changing to a 12v starter ?
Click to expand...

I strongly doubt you will find a 12 volt starter for your 300, unless you have an electrical shop rewind a 6 volt starter.
 
JD, Ive also used many 6 volt starters at 12 volts, both on cars trucks n tractors and like you , I NEVER HAD ANY STARTER PROBLEMS. I have had a few drives develop problems however.

The poster has to get a new starter anyway however, so in that case, of course, its best to get a new 12 volt starter instead of a 6 volt for his now 12 volt system. Had he asked is it okay to use my 6 volt Id say yessssssssss go for it.

Take care up North now while I keep an eye on things here in the South lol

John T
 
About the very first 400 farmall I ever converted to 12 volt gave me some problems with the bendix drive kicking out when she was winding wildy so I put in 12 volt field coils and if memory serves me right the commutator end frame. It made for a more factory like conversion. No alternators in those days so put gen from latest 450 on it. Maybe in 1961 or so. I have two of my own tractors using 6 volt starters and 12 volt system with no problems and have done several others. The question was related to buying a different starter and I feel it would be best to go 12 volt.
 
(quoted from post at 19:56:39 01/10/11) About the very first 400 farmall I ever converted to 12 volt gave me some problems with the bendix drive kicking out when she was winding wildy so I put in 12 volt field coils and if memory serves me right the commutator end frame. It made for a more factory like conversion. No alternators in those days so put gen from latest 450 on it. Maybe in 1961 or so. I have two of my own tractors using 6 volt starters and 12 volt system with no problems and have done several others. The question was related to buying a different starter and I feel it would be best to go 12 volt.
Click to expand...

There are two different 12 volt starters used. One used different field coils and the same armature as the 6 volt. The other used the same field coils but with a different armature. If you are going to convert one from 6 volts to 12 volts you can go either way.
 
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