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Re: 6V Positive Ground Alt


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Posted by Jon Hagen on September 15, 2006 at 16:37:02 from (69.26.29.242):

In Reply to: 6V Positive Ground Alt posted by Bob Naske on September 15, 2006 at 10:33:44:

I have built quite a few of those one wire conversion alternators,and if not enough rpm to excite the alternator is the problem, then try the smallest alternator pulley to turn it faster.

Plan B would be to install a momentary contact button switch that connects battery voltage to the # 1 regulator blade contact for a moment to excite the alternator after starting the engine.
use a auto parts store $2 replacement regulator plug to connect to the #1 regulator blade. terminal. Your 1 wire regulator will not need the #2 terminal connected to the battery stud to sense voltage,the 1 wire regulator is wired internally to sense voltage without a sense wire. You should only need to push this button once after starting the tractor,as once excited,the alternator will continue to charge even at low rpm.

Plan C,what is the amperage rating of your 1 wire alternator ? A 1 wire alternator with a small 37 amp stator installed will excite at less than half the rpm of a 61 or 72 amp alternator. usuall 37 amps is more than enough for the needs of an antique tractor,so having your alternator shop install a larger 61-or 72 amp stator just makes the alternator much harder to get it charging,as much higher rpm is needed. Maybe all you need to do is have your alternator shop install a 37 amp or smaller stator to fix your problem.


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