I've read all the posts and I'm still determining wether to buy a 50 amp stator myself. A few close calls of the starter barley starting the bike has convinced me to leave the fog lights off while driving. lol.
I have an electrical background and back in the 80's I learned it all about charging systems and batteries from working in a garage.
Strange how these bikes when they were new always seemed to have enough power but years later, everones getting a H.O. stator... I agree, it will supply a suffient amount of charge. Easy fix. But, calculate the loads, 22 indicator lts, one head lamp, carb heaters, dash lights, ignition; it all adds up. just lights and carbs alone add up to 26 amps by my calculations. eg: 22 lamps @ 9w + 55w headlight = 253w, devide by 12 volts = 21 amps plus carbs (I think 5amps) for a total of 26amps. Rev the engine to 3k and voltage goes up to 13.6, devide that into the watts and gives you 23.5 amps total. Go figure eh.
My experience has led me to question this senario and look for another problem. The stator is a three phase AC generator coverted to DC thu three diodes in the rectifier, loose one diode or one segment of the stator and we have a charging problem but it'll still charge. The regulators job is to monitor the voltage, when low, it feeds the rotor to excite the magnetic field to beging the charge.
I'm going to test my diodes and stator before buying a new stator as soon as i can figure out how to get it apart. lol. I'll post back as to my findings.
Sorry for being so long winded here, just trying to share my electrical education.