Join Date: Aug 2009
Location: Brattleboro, Vermont, USA
What this means is that if you figure the load on your alternator in watts your calculations may be off and you may draw more current from your alternator than you think.
As you know GL1200 eat alternators. They are rated for 360 watts.
If you figure this at 12 volts that means you can draw 360w/1v2=30 amps max. If you figure it at 14 volts, what it really puts out, the max is 360w/14v=25.7 amps max. That's a grip heater or 2 worth of difference. Makes the poor boy conversion look real good. 55 amps!
As far as I know these are the causes of alternator stators failures:
1. Bad connectors on the cable from the alternator stator to the voltage regulator. If they are heating up or discoloring they need to be replaced or eliminated with soldered joints. There are 3 windings on the stator. If one connection fails out of the 3 the entire load shifts to 1 winding.
2. Overloads from too much load. Too many lights, boom boxes, grip and tushie heaters etc.
3. Oil acid buildup eating up the insulation on winding on the stator. In the GL1200 the alternator sits in the engine oil bath. Change the oil often.
89 GL1500 111+K (not my 111+k, yet!)
86 Honda Elite 250 -3k miles
85 Suzuki 450
86 Honda VT 500
1980 Panasonic Bicycle with 50 cc motor
Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity. - MLK, Jr. 1963