I recently changed over to 12v on my '53 239 and i got a free 12 v generator that has sat for a number of years. It worked the last time it was on a motor. Its all hooked up and i took a base reading from my battery of 11.60V, with the motor running it slowly drops from that by .01V steadily about every 30s or so. When i throttle the motor up the reading jumps back to 11.60/11.61V until i let off and it drops back to where it was before i throttled and keeps dropping slowly. Im not very familiar with generators over alternators, so i am unsure if this is normal. Any suggestions? I would like to keep the nostalgia look of the generator over the modern look of an alt.