LR172’s Q above : Why would you buy another PP alternator?
I went thru this during my first 1000 hours. I didn’t want to change the mounting brackets or the wiring necessitated by changing to most everyone’s favorite B & C.
After about 500 hours I started having charging issues. I bought a used PP alternator from a VAFr that still worked. Carried it with me to prevent AOG. Between the 2 PP alternators I purchased 4 Hartzell brush assy at $85 each. During this time while flying I spent an inordinate amount of time watching my alternator and battery activity/condition. I decided the switch to B & C was REQUIRED after returning from St Simon, just an hour away, and the charging stopped and I was on JUST the battery. Not a major event thanx to Dynon backup batteries and dual Pmags. But it motivated me to make the switch.
I had spent about $600 TRYING to retain/salvage my PP install.
Bit the bullet and bought the 60 Amp B & C with EXTERNAL regulator. It took a couple of weeks due to needing parts as the install progressed. It took many flites before I felt comfortable NOT constantly monitoring the charging indicators. Now 300 hours later, I occasionally check the indicators and the B & C has been flawless. The $$$ & time spent converting to B & C has been WELL WORTH it. Just my story.