On Sep 3, 10:02*am, Frogwatch wrote:
On Sep 3, 7:15*am, (Richard Casady) wrote:

On Wed, 2 Sep 2009 20:03:04 -0700 (PDT), Frogwatch

wrote:
Today, I dug out the old bronze prop whose blade edges were so
depleted of zinc

What kind of bronze contains zinc? Brasses are copper/zinc alloys,
bronzes are mostly copper/tin. Disappearing zinc is why brass is not
used in many applications.

Casady

OK. 'twas a late night brain freeze but the bronze is wasted and
corroded somehow.

Actually, marine bronze contains 9-10% aluminum which is even worse
than Zn. I do not have shore power so I can only assume someone else
has bad wiring. Right now, I am combatting this by having the diver
replace my zinc every 4 months but I will move my boat soon.
So, what do people think about my making the strut?
HK, you are incapable of giving useful input so please do not respond