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Monthly Archives: May 2010

Hull Primer Coat

I painted several primer coats on the completed hull.  I have more fairing and sanding to be completed, along with a final primer coat to come but I am a happy person at this stage of construction.

Completed hull is ready for final fairing and detail work before painting ( a bit of wide angle lens distortion, not a bulbous up front as it appears)

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Posted by on May 29, 2010 in Building Stage

 

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Attaching the Stem

Now that the hull boards have been installed I am able to attach the stem to the boat.

Stem is epoxy glued and screwed to backbone

The stem is cut and shaped to the keel

Holes are drilled for the stem hook

Detail look at holes for stem hook and keel band fitting before fairing.

Application of epoxy fill for fairing

Stem has been faired and ready for primer

 
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Posted by on May 27, 2010 in Building Stage

 

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Tools and Shop Utilization

I thought I would include photo’s of some tools and supplies I have been using during  the build of the Ebihen 15.   Here is a slide show (around 15 slides)

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Posted by on May 18, 2010 in Building Stage

 

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The sheer strake

After several months of hull work, I have attached the sheer strake.   Next will be attaching the bow stem, fairing the hull and paint primer before final hull painting.

Fitting the Sheer Strake

 
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Posted by on May 17, 2010 in Building Stage

 

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Motor cutout and bow stem work

This week I added another two of the planks to the hull and  made the cutout for the outboard motor.

Outboard motor well is forward of the rudder, which will make motoring around the bay an easy task.

(Update on 8/10/10)  I received a comment from a reader that pointed out that I have interpreted the plans incorrectly for the keel aft edge.  To improve propeller efficiency the aft edge of the outer keel is streamlined. (see longitudinal structure plan).   I took the plan literally and made a narrowing that somewhat matched what I saw on the plan.  See the photo above.  I only have a very narrrow indentation around the propeller shaft area.   What I didn’t understand was how to read the plans as provided by the designer.   What is necessary is a narrowing of the entire edge the WIDTH of  the propeller and not just the small area that I accomplished.    Future photo’s will show me changing this, but at the current time the hull has been painted and turned over, so I will not be making the improvement until nearly launch date.   If you build the Ebihen 15 don’t use my photo above as a reference for your own boat.

I also roughed in the bow stem for location and placement of my u-shaped bow hook.   I deviated from plans here.    The original plan called for a laminated stem.    I choose to make a scarfed solid oak stem.   The plans call for only a hole cut into the laminated stem and a loop of rope.  I want a bow hook that is attached directly to the boats backbone.   I purchased a stainless steel U-bolt that is bolted directly through the backbone.   It will not be a classic look, but I believe a much stronger and easier attachment location for the bowspirit and trailer straps.

A solid U-Bolt will be attached to the boats backbone.

A solid anchor point for the bow spirit and trailer hooks.

 
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Posted by on May 15, 2010 in Building Stage

 

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Board chamfers

Each board is chamfered the full length to match hull shape and make for a close fitting to bulkheads.  Bulkheads are also chamfered to boat shape.

Board is chamfered to match hull shape angles on bulkheads

A bit more adjustment and this board will be ready.

 
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Posted by on May 5, 2010 in Building Stage

 

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