[Public-list] depression in hull

[Mike Lehman]

Brian,

The newer version boats have this problem although it has never caused any 
failure as far as I know. 505 suffered from this. The shelves in the forward 
cabin are secondary structural components. On the 'newer' boats they are 
pop-riveted in place and do not provide much lateral support. I loosened the 
rig; pushed the sides out and glsssed the shelves in place. The hardest part 
of the job is prep - grinding the paint/glass so the new fiberglassing will 
adhere well. While I was at it, I reinforced the knees for the forward lower 
shrouds.



Mike Lehman
~~~_/)_/)~~_/)~~~




----Original Message Follows----
From: Brian Hofler <bhofler at shaw.ca>
Reply-To: Alberg 30 Public List -- open to all 
<public-list at lists.alberg30.org>
To: Alberg 30 Public List <public-list at alberg30.org>
Subject: [Public-list] depression in hull
Date: Sat, 30 Dec 2006 03:29:49 -0800

While working on Putachieside (#496) recently I noticed a depression in the
hull mid-ships near the chain plates. The depression (indentation) seemed to
be greater on the starboard side than the port. Last year I did a major
refit that included increasing the size of the chain plate bolts as
described in previous postings on this site. During the refit I did not
notice the indentations which are located at the hull / deck joint. I am
concerned that perhaps the mast compression beam and / or the bulkhead have
weakened thus causing the hull to flex in this area and collapse slightly. I
have checked the maintenance guides and cannot find any direct comments on
this phenomenon. If anyone has had a similar experience with this issue I
would appreciate your comments / solutions.

Cheers
Brian

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