When I was tearing down an alt I had better luck using a propane torch than I did the 100 watt soldering gun. I'm planning on doing some comparison between an eagle 200 amp and an aspwholesale 240 amp rebuild. My current measurement will be a 500amp shunt in series with the output with an analog meter. Load will be my actual amp / sub combination. Still trying to figure out how I'm gonna mount the shunt to keep it from floppin around and shorting on anything. I noticed that the aspwholesale stator has 2x the copper that the eagle has (I think the eagle is a stock ad244 stator)
The first eagle 200 I killed, I put an aspwholesale 240 amp stator and a new regulator in. It worked for like 5 minutes, and died again. I think reg died again. Anyone mind measuring the dcr across rotor coil? I'm seeing about 2 ohms on mine, Don't remember off hand.
Long term idea is to build my own external regulator to control multiple alts, use current shunts for monitoring and balance load across alts. Will likely use an N channel mosfet to PWM the field, with the + end of field switched via relay to +12. If going that far might as well incorporate an hd44780 LCD to display currents / total. Will need an adc channel for each alt, and one for v sense, and a PWM output for each alt. Big ideas, little free time to make them happen.