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Re: Centerboard trunk building primer--please every builder read this

To: Aikisu@xxxxxxx, WFS03@xxxxxxx, swiftsolo@xxxxxxxxxxxx
Subject: Re: Centerboard trunk building primer--please every builder read this
From: BDally6107@xxxxxxx
Date: Wed, 10 Nov 2004 11:11:02 EST
Ken and all,
 
It's good you brought this up as it'll refresh some memories.
A note of reminder from previous posts regarding the centerboard  trunk.  
 
As you will all recall, I sent out some posts that suggested that the tops  
of the bulkheads be cut down 1/4" to lower the deck and to make the gunwale  
flange protrude below the hull a little further.  This also reduces  buoyancy 
when it's on its' side a bit as well (a good thing).  This issue  is caused in 
part by the thickness added by the glass on the deck and hull and  in part by 
the propensity that all of us have to cut bulkheads just outside of  the lines. 
 
 
The centerboard trunk pattern was made with this in mind because it's not  
just a matter of whacking off the top of the trunk (the insert block would get  
too thin).  It is designed to accommodate the cut down  bulkheads.  
 
In conclusion, the mast step area does get the horizontal piece shown  to 
double the thickness in that area but will still be 1/4" too low until  you 
cut/sand the tops of the bulkheads down to match.  Please  avoid installing 
your 
deck until you've cut these bulkheads down.  You  boat will measure but you 
won't have a good gunwale flange to use when righting  the boat after a capsize.
 
Best regards,
 
Bram  
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