Cherokee battery box repair

writes:


So far there's one vote for aluminum, one for stainless, and one for tin, eh?

No titantium or fiberglas?


Speaking of that, anyone figured out the purpose of the diode and resistor
back there on that vintage PA-28? As near as I can tell from the schematic, it allows
the alternator to slowly charge a completely dead battery with the master off.
Then will allow the alternator/partially charged battery to close the master and
charge it properly. Of course all this would require the alternator to self-excite...
something I didn't think they were typically set up to do. Thoughts?

If the soft core of the armature retains some flux, it may well self excite.

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