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Re: Centerboard trunk building primer?

To: christian@xxxxxxxxxxxxx, warren@xxxxxxxxxxxx
Subject: Re: Centerboard trunk building primer?
From: WFS03@xxxxxxx
Date: Tue, 19 Oct 2004 21:13:33 EDT
Cc: swiftsolo@xxxxxxxxxxxx
Christian,
One item to add to your comments regarding the upper and lower blocks in  the 
CB trunk, is that they should not be installed until after the holes in the  
deck and hull are cut.  I took over the construction of USA020 from Tom and  
Felix, and Tom had installed the CB Trunk with the lower block in place.   At 
that point, there was no way to remove the lower block without either ripping  
into the hull bottom or removing the entire CB trunk.  My decision was made  
for me, as the CB trunk was not straight and true, so I had to carefully  
Dremel-cut the fillets away and remove the trunk and starboard half of station  
eight.  Bram suggested that running duct tape down each side of the hybrid  
outside the fillets would allow me to sand the excess epoxy away with a  palm 
sander without damaging the cloth.  It worked like a charm.  I  used the same 
technique to remove the 2" trim pieces from the top and bottom of  the CB 
Trunk, as 
they were not installed properly.  The CB Trunk was easier  to reinstall with 
the 2" beveled trim pieces off, allowing me to true up the  trunk and get a 
tight fit for the beveled trim pieces on the top and  bottom.  
 
The moral of my story is that you can fix things later, but it is much  
easier to do it right the first time.  Tom had also forgotten to cut the  lower 
vent holes in station eight, so I also added those before replacing the  trunk. 
 
Before installing the deck, I will cut the lower CB trunk hole and  install 
the block per the revised CB instructions for load-bearing  surfaces.  Be sure 
to follow Bram's instructions for placing the CB block  load on the hull and 
deck surfaces and not the trunk.
 
Attached is a photo of the correctly centered trunk, prior to repair  of the 
off-centered gap in station eight, and a photo of the finished  trunk.  You 
can see how off-centered the trunk was prior to the repair by  the gap on the 
port side.  I hope this tale helps someone avoid  the same mistakes made in my 
Solo.  
 
 
Bill Scheumann
USA020 and USA040
 

JPEG image

JPEG image

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