Posted by John T on September 03, 2012 at 06:47:31 from (216.249.82.117):
In Reply to: 6V gen to 12V posted by bkpigs on September 03, 2012 at 06:26:58:
I have successfully used a 6 volt genny to charge a 12 volt battery by just using a 12 volt Voltage Regulator NOW DONT ANYONE HAVE A CALF Im NOT saying thats engineering correct and Im NOT saying it charged at any real high rate, Im ONLY SAYING it worked. Theres a chance the 6 volt field coils may draw too much current and overheat but mine never had a problem.... A genny dont necessarily know its output, that depends on how fast it spins and how much field current is pumped through it i.e. the job of a VR or manual Low/High charge controller.
The CORRECT thing to do is have a genny shop change out the fields and anything else necessary.
NOTE if changing from a Cutout Relay to a full fledged Voltage Regulator on a 3 brush genny, one could adjust the third brush to max charge or else just do away with it and convert to a standard 2 brush unit. The VR if correctly matched to the genny will regulate and limit the field current so theres no need for the old 3 brush system and a low/high charge control.
NOTE it makes a difference of course if the Genny is a Class A (JD, IHC, Oliver etc.) or Class B (Some Fords and Masseys) as each require the correct Voltage Regulator
It may be cheaper n easier just to buy a new or used already 12 volt genny and VR and be done with it.
Got any old fashion mom n pop genny starter alternator shops nearby??? Try Kenneth at Classic Generator in Texas
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