Reply To: Aluminium corrosion / rust.

[wristpin]

Anything that excludes air and moisture has to be better than nothing . Not sure if I have read your post about galvo correctly but while being fine for steel it is unlikely to be beneficial for aluminium alloys.
My guess is that if money was no object a new bearing housing given a couple of coats of epoxy primer would be the way to go, but to get an existing housing clean enough fot that to be effective would possibly destroy it.
I put a new deck shell onto a little Husky for the brother in law down in Somerset in the summer and fortunately went armed with a pair of good used bearing housings as his were crumbling away to nothing.