[Public-list] Stainless Machine screws into Aluminum Masts

[Budington, Jonathan]

Thanks to all for the information.  The bad news is that the boat is in
Chicago until the end of February, so I won't be able to work on it until
the Spring.  I don't know why the previous owner painted the mast - I assume
to make it look pretty.  When I boat the boat, It was in the middle of a
restoration - new paint, wiring, gages and rigging.  The mast came back
without the sail track from the rigger.  I called him myself to get the old
track back to figure out where the holes were.  I will call again to see
what he used to fill them.  I wish this had shown up on my survey report,
but I probably would have bought the boat anyway.

Let the bankruptcy begin.

Jon 

-----Original Message-----
From: Mike Lehman [mailto:sail_505 at hotmail.com]
Sent: Thursday, January 06, 2005 1:50 PM
To: public-list at alberg30.org
Subject: RE: [Public-list] Stainless Machine screws into Aluminum Masts


RTV works well for this purpose. Also, most of your problems removing stuff 
was probably on the lower part of the mast where salt water helps to cause 
the gausing between the metals.



Mike Lehman
 ><((((o>,.*??`*...,><((((o>




----Original Message Follows----
From: Michael Connolly <crufone at sbcglobal.net>
Reply-To: Alberg 30 Public List -- open to all <public-list at alberg30.org>
To: Public List Alberg <public-list at alberg30.org>
Subject: [Public-list] Stainless Machine screws into Aluminum Masts
Date: Thu, 6 Jan 2005 08:53:23 -0800 (PST)

Hello,
If one is going to install Stainless Machine screws into Aluminum you must 
use some sort of corrosion barrier.  There is enough potential between SS 
and Aluminum to creat major dissimilar metal galvanic corrosion.

I have had much difficulity removing SS hardware from Aluminum.  Most of the

time the SS twists off or galls up the threads to make them unusable when 
trying to back out the SS fastener when trying to remove the fitting.  80% 
of the time I end up having to carefully drill out the SS hardware.

On a fitting such as sail track, which might have to be removed for 
maintenance, I would prefer to use the Aluminum rivets.  There is no 
corrosion potential, they are plenty strong enough for the task and are 100 
times easier to drill out when replacement is required.

My two cents.

Michael
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