Frogwatch wrote:
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


Actually, I am quite capable of offering useful input on this and many
other boating subjects, and I think it a great idea for you to put as
many jury-rigged pieces and parts on your boat(s) as possible, so as to
increase the likelihood disaster will befall you while you are way out
of sight of land. That may lead to your family not having to spend its
assets institutionalizing you.

Your solution will certainly be cheaper than pulling your dilapidated
boat out of the water for a few days so that you can remove the corroded
parts and have someone competent fix up new or modified parts for you.

Whatever you do, when you rebed the strut, buy a can of sealant off of
eBay for the lowest possible price, so that when you open it up and find
it has turned into granite, you can then experiment with the chemicals
you have on hand to see what will turn it back into paste.