Motorcycle Repair: 97 Ultra - Stator, dc volts, voltage gauge


Question
Jerry,
I was out for a ride and noticed my voltage gauge was reading lower than normal - about 11vdc - normal is at 14.  I managed to make it home and dove into the repair manual.  The battery checks out good.  The regulator checked out good verifiying bridge rectifiers.  I tested the stator leads for grounds - there were none.  The continuity across the stator leads was 0.3 ohms - that's good.  I then took a reading across the stator output leads while running at 1000 rpm - 2.6 vac.  The normal reading should be 19-26 vac.  I deemed it bad and cracked open the primary chaincase.  I found the stator drenched in primary oil as the gasket to the crank case had failed.  I ordered a new stator just to be safe, online, installed new gaskets, reassembled, and the output was worse - this time 1.6 vac at 1000 rpm.  The output does increase with rpm's, but just marginally to about 2 vac at 2000 rpm.  The manual indicated the output should be in the range of 19-26 vac.  I managed to get my money back for that stator.  Is it possible I just received a bad stator, or is there something else I could be overlooking?

Answer
I think you got a bad stator. Here is the deal with the 19 to 26 volts.The charging system starts with AC voltage.but you can`t charge a battery with AC voltage. so they change it to pulsating DC voltage.This accrues when the AC voltage is clipped to say  12 volts on the low side to 14.5 volts on the high side now the battery thinks it is getting DC volts so it charges.