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General Discussion about the Great Alaskan / Re: Bob from Olympia, 28 GA build
« Last post by Rbob on March 23, 2017, 10:30:06 PM »
That's a great report, and review.  Glad you are enjoying it, do you get out bottom fishing / halibut?
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General Discussion about the Great Alaskan / Re: Bob from Olympia, 28 GA build
« Last post by Cannon on March 23, 2017, 09:28:35 PM »
Correction: The Great Alaskan is a Fish catching, rough water safe boat, designed to take it under rough conditions. Overbuilding would insinuate heavy, tank like construction, quite the opposite is true!   It is a stable craft which handles the seas with seaming ease!

PS, Send all donations to my PayPal account...Just kidding, in case you hadn't figured it out, I love my boat!
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General Discussion about the Great Alaskan / Re: Bob from Olympia, 28 GA build
« Last post by Brian.Dixon on March 23, 2017, 11:00:45 AM »
Perfect explanation!  Since they are subject to abuse biax and 10oz should make it bullet proof!


Thank you!

The Great Alaskan, as designed, is over-strong... on purpose, so imperfect builds or cheap plywood would still work fine :)

Brian
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General Discussion about the Great Alaskan / Re: Bob from Olympia, 28 GA build
« Last post by Rbob on March 22, 2017, 01:45:41 PM »
Perfect explanation!  Since they are subject to abuse biax and 10oz should make it bullet proof!


Thank you!
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General Discussion about the Great Alaskan / Re: Bob from Olympia, 28 GA build
« Last post by Brian.Dixon on March 22, 2017, 07:19:18 AM »
Brian,

I am thinking ahead again, when the sheer decks are added, do I glass the top of the sheer deck and wrap the glass onto the sides?

Exactly!  Boats tend to flex in a 'hogging' and 'oil-canning' way.  As they climb up a swell, the bow wants to flex upward - which forces the sides outward.  When on top of a swell (like a teeter-totter), the opposite happens.  The sheer structure in this boat is designed to resist these flexions - it is effectively a horizontal beam.  If you glass the sheer decks and wrap it over onto the sides of the boat, the tensile strength added by the glass is a great back-up to the sheer structure.  A common place for boats to crack (and leak into the boat ...it's upholstery etc) is along the sheer and this is why.  Other stress concentration areas are along the bow stem and the transom corners.  These places flex like a hinge as the boat flexes, and that's why I use a heavy stem and the glass-reinforced epoxy putty for the transom corners... I've seen cracks in boats in all of these areas, but not in a Great Alaskan!

Brian

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General Discussion about the Great Alaskan / Re: Bob from Olympia, 28 GA build
« Last post by Rbob on March 21, 2017, 09:18:17 PM »
Brian,

I am thinking ahead again, when the sheer decks are added, do I glass the top of the sheer deck and wrap the glass onto the sides?
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General Discussion about the Great Alaskan / Re: Bob from Olympia, 28 GA build
« Last post by Brian.Dixon on March 14, 2017, 07:00:56 AM »
Yup ... Tapatalk is failing for now.  I've been working on the web site instead, and on updating the plans manuals and drawings ...they're all out of date with old addresses and copyrights, and Windows got rid of a font that I used, so now I have to edit every drawing and tune font sizes and text locations.  I'll work on the forum issues after I finish the plans package update.  No errata is coming that I know of ... I checked issues pointed out by some and found that the updates had already made it into the last release.

Your fairing work looks really good, nice textbook example of how to do it right.  I like to fair between all layers, e.g. fair the wood ...then glass ...then fair ...then 2nd layer of glass ...then fair.  If you don't do it that way, then sometimes defects can add up and make life more difficult later.  It's better to take down high spots and fill the lows at every opportunity as you go.  You'll appreciate it later...

Brian

PS: Great pix!
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General Discussion about the Great Alaskan / Re: Bob from Olympia, 28 GA build
« Last post by Rbob on March 13, 2017, 02:07:38 PM »
Pics as promised, the keel had 1/8" low spots in a couple spots but the batten and strait edges with epoxy fixed it.







Added fairing to blend it in:



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General Discussion about the Great Alaskan / Re: Bob from Olympia, 28 GA build
« Last post by Rbob on March 13, 2017, 01:28:04 PM »
Forgive me father, for I have sinned...  Its been 4 months since I my last worked on my boat. Life gets in the way sometimes and part time boat builder is faced with many challenges.

I promise to re-sand re-clean, apply fairing compound and sand some more then add the exterior glass.  I have no vision of finishing this year and I will be ok with that, setting my sights on next year for the launch.

One thing I discovered was that the keel was not flat / fair as I wanted so I used a long strait edge covered with box tape and put a bead of silica thickened epoxy to make a flat keel and fair.  I have since applied fairing compound to blend the keel into the bottom nice, the 2 rows of glass tape are blended in good now. I could have faired it all later after applying glass but it bothered.

I tried to use tap-talk but there is an error.

I should be able to start putting glass on the hull this coming weekend.  I will add some pics soon.



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General Discussion about the Great Alaskan / Re: Bob from Olympia, 28 GA build
« Last post by Rbob on February 20, 2017, 04:22:21 PM »
Perfect and thank you!
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