So my "new to me" Potter Seacraft Sceptre......Barn Find

[erebus]

Originally Posted by jebsurf

***Major FIX ASAP/ADVICE NEEDED*** I'm having some electrolysis going on. It's pretty bad and my buddy and owner before him prob weren't boat "fix it" guys, so they prob had no idea it was going on. The bracket has taken a pretty big hit. Big enough where it's leaking somewhere( I believe I know where).

Is it an Armstrong Bracket?
I just went through the rehab process on mine (armstrong) and I was talking to the Alexseal paint rep about the process to paint mine after I had it sandblasted and he said to take a look at whether the bracket was welded or cast.
He said for awhile Armstrong was making cast aluminum brackets, and the corrosion on them was out of control.
I looked in mine and could see that it was definitely welded out of plate.

If its welded or not an Armstrong than it could be that somebody painted it with copper bottom paint, which is a major no-no on Aluminum.
Next guess would be that the bracket and the motor weren't isolated enough and not enough zinc to protect the aluminum... maybe?
Just because the zinc on the bracket looks intact doesnt mean its doing its job. For example if somebody caulked it in place, or installed it over existing bottom paint.
For the zinc to be effective it has to have a good electrical contact with the metal its trying to protect.
Just a couple of thoughts...