I know I"m going to get worked over but I found this in the archives. I put a 12 volt battery on my M and I plan on keeping the 6 volt gen and putting on a 12 volt regulator. Since it has a mag the only power used will be to start it and a pair of lights which will be used infrequently. From what I gather from the archives this should work ok.
- Thread starter GP Hansen
- Start date
Fritz Maurer
Well-known Member
Save your money. I doubt the 6-volt generator will close the points on a 12-volt regulator. If it does, it'll throw the lead out of the commutator and ruin it anyway.
Janicholson
Well-known Member
The system can work to a degree. If modest expectations and avoiding the idea of running it for 12 hours straight in august, it is OK to try it
Putting 12v field coils in the gen is easier on the process. as it reduces the heat in the core of the gen substantially. Jim
Putting 12v field coils in the gen is easier on the process. as it reduces the heat in the core of the gen substantially. Jim
rustred
Well-known Member
might be better to keep the 6v batt.and components sice its a better combination with a mag.
i think they should keep should"s and guess"s out of archives confusing people.
a farmall is like a chev, it dont need to turn fast to start.
but if it is a ford it will need fast rpm to start. no way will it start with slow rpm.
this is chev and ford from the same vintage as tractor.
i think they should keep should"s and guess"s out of archives confusing people.
a farmall is like a chev, it dont need to turn fast to start.
but if it is a ford it will need fast rpm to start. no way will it start with slow rpm.
this is chev and ford from the same vintage as tractor.
I second Janicholson. If you replace the field coils with 12V you should have a worry free operation. Run your lights all you want, maybe add a radio and such. With the 6V field coils, it will work but they will run warmer. You should be fine though with just running lights occasionally and recharging from the starts. Depending on the gen. a set of 12V field coils will run you about $30 to $50 with most being close to the $30 range.
It CAN WORK IVE DONE IT. NOTE dont anyone have a calf now, Im NOT saying its engineering correct or will charge at any real high rate IM ONLY SAYING IT CAN WORK and heres why;
A genny dont necessarily know what its output is, thats increased if you EITHER spin it faster ORRRRRRRR pump more current through its field coils which increases electromagnetic field strength (and resultant output), and the VR is what regulates field current and the 12 volt VR will try to pump more of it SO YES IT CAN WORK
HOWEVER related to what Jim points out, the 6 volt fields """could""" possibly overcurrent and overheat cuz the 12 volt VR is forcing too much current through them (but mine never did though) so its the engineering correct answer to have thosed changed out.
John T
A genny dont necessarily know what its output is, thats increased if you EITHER spin it faster ORRRRRRRR pump more current through its field coils which increases electromagnetic field strength (and resultant output), and the VR is what regulates field current and the 12 volt VR will try to pump more of it SO YES IT CAN WORK
HOWEVER related to what Jim points out, the 6 volt fields """could""" possibly overcurrent and overheat cuz the 12 volt VR is forcing too much current through them (but mine never did though) so its the engineering correct answer to have thosed changed out.
John T
Bill in IL
Well-known Member
If you have to go buy a 40 dollar 12 volt regulator then I would say buy a 40 dollar 12 volt alternator.
If you are using parts on hand go for it.
My opinion that alternator will be more reliable for you in the long run anyways.
If you are using parts on hand go for it.
My opinion that alternator will be more reliable for you in the long run anyways.
The voltage required will send too much current through the fields which in turn have to pass through the voltage regulator points and the points will be very short lived. Actually had first hand experience with this. Sold a new 706 gas tractor to a customer. Shortly the red amp light was blinking. Checked it out, regulator was bad. Replaced regulator, worked but voltage was not nice and steady. Pulled cover off regulator and points were arcing badly. Pulled generator,(mind you I am doing this in the machine shed out on his farm, took gen back to shop. Checked it out and determined it had high rate of current draw through field coils. Further testing confirmed it had six volt field coils. Replaced with new 12 volts field coils, problem solved.
soybeanjoe
Member
I've had a couple 6v gens converted to 12v. At the same time I had them converted to neg grd. Wasn't all that expensive One was less than $15 & the other around $35. The $35 one was off a '49 M that had the regulator on the gen.
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