[Public-List] Propeller Shaft Material

Tue Jan 5 12:45:06 PST 2010

I replaced mine with stainless as well a couple of years ago. At the same
time the yard mounted a large zinc on the hull and grounded all of the
through hulls to that zinc. They also put a brush on the shaft that is also
grounded to that zinc.

So far so good.

Bill

SallyB #441

-----Original Message-----
From: public-list-bounces at lists.alberg30.org
[mailto:public-list-bounces at lists.alberg30.org] On Behalf Of Laughing Gull
Sent: Tuesday, January 05, 2010 3:31 PM
To: Alberg 30 Public List -- open to all
Subject: Re: [Public-List] Propeller Shaft Material

My replacement was stainless. I did notice an increase in the speed the zinc
deteriorated, but this has not been an issue. 

Jonathan Adams
Mobile: 443-538-7443
Composed on PDA

On Jan 5, 2010, at 2:44 PM, Gordon Laco <mainstay at csolve.net> wrote:

Hello -

I have aluminium bronze in 1 1/2" rod in stock; I use it to fabricate custom
large turnbuckle studs and lifeline stanchions.  Alum Bronze is a
particularly hard alloy but that said, I think a 316 grade stainless shaft
will be superior in most aspects including avoidance of galvanic corrosion
and certainly wear.  The Achilles heel of 316 is that it is relatively
brittle compared to galv steel or 304... but hardness and stiffness is what
you want in a prop shaft.  Not malleability, which is what makes bronze
alloys attractive.    If I were having a new shaft made I would use 316
stainless with no hesitation.

Cheers - Gord

#426 SURPRISE

On 5-Jan-10, at 2:14 PM, Michael wrote:

It appears close to impossible to get brass or bronze 1" stock, so the
choice has been made for you. Do you have a line on bronze shaft material?

MichaelGrosh
#220
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