[Public-list] Hull-deck joint construction, pre-liner & post liner

[John Birch]

It is an L flange hull with straight deck over top with a butal gasket 
through bolted through a teak toerail on 4" centres. The coring stops before 
the stanchion bases which are drilled through solid glass. Most had open 
taffrails though many had closed ones too. On the pre 1968 boats the coring 
material is 2 layers of 1/4"pegboard masonite -glass, masonite glass 
masonite glass gelcoat. These decks are virtually bullet proof and have had 
few problems with rot or delamination. Any delamination is usually found on 
the cockpit sole from people dropping off the seat lockers heavily over time 
as opposed to stepping down gently. There was no deck drain, rather they 
used toerail scuppers for drainage.

The brigdedeck had a top loading, though the BD ice locker hatch and front 
opening interior ice locker which was later discontinued in later models and 
the cooler completely redesigned to an internal top loader. All bulkheads 
were tapped and tabbed to the hull, with no liner.

1969 Boats had a hybrid deck which used a spacer on the hull to compensate 
for the height difference and the latter hull lay-up which was a raised L 
with the newer deck flange which is pop riveted except for the Genoa track 
which is through bolted. By 1969 - the boats had the current  balsa core 
type construction which terminated out side the inner stanchion base bolt 
holes.

By the early 1970's the current  balsa core type construction which 
terminated inside the inner stanchion base bolt holes. It has the newer 
reverse flange shearclamp. This has caused some problems with water ingress 
and core issues when the sealant is not looked after. The interior glass 
liner was added.

In reality there were 3 versions which should really be referred to Mk 1, 2, 
3 - but unfortunately, unlike the A-37s is not - it would be easier for 
people to figure them out.

Hope this is a help.

Cheers,

John


----- Original Message ----- 
From: "Rachel" <penokee at cheqnet.net>
To: "Alberg 30 Public List -- open to all" <public-list at lists.alberg30.org>
Sent: Sunday, February 18, 2007 3:53 PM
Subject: [Public-list] Hull-deck joint construction, pre-liner.


> Hi folks,
>
> I'd like to know exactly how the hull-deck joint is constructed on the
> pre-liner boats. What are the shapes of the hull and deck molding in
> that area, how are they held together (besides the obvious toe-rail
> bolts), etc.
>
> I searched the archives and did find a few threads where people started
> asking about this, but they morphed into discussions of the pop-rivet
> and cap on the liner boats before anyone talked too much about the
> pre-liner set-up.
>
> I noted that one person had taken off the toe-rail and glassed over (?)
> the joint, then moved the toe-rail up onto brackets, a la Hal and
> Margaret Roth (so perhaps he's seen how it's all done), but I forget
> what boat that was now.
>
> Does anyone know for sure, and/or is there a sketch anywhere?
>
> Also, there is a section of photos on the hull-deck joint on the A-30
> page, but I can't really tell what I'm looking at there; i.e. which way
> is up, and which era of boat is involved.
>
> Thanks ahead,
>
> Rachel
> 1967 Alberg 30, #221
>
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