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Building a windsurf board out of wood
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thombiz



Joined: 25 Jun 2007
Posts: 618
Location: Corpus Christi

PostPosted: Fri Jul 09, 2010 10:52 am    Post subject: Reply with quote

I'm going to try to look at this with fresh eyes and see it for what it could be. When I look at this: http://balsaflite.com/



It occurs to me that it is worth a fresh look. Balsa as an endgrain core material is particularly tough. It doesn't get used in windsurf boards too much because it is heavier than other readily available PVC foam cores, nonetheless it is popular in high end yachts. Using endgrain balsa as a core for the deck makes sense to me, then sandwich it with a thin Bamboo skin using the tension properties of the Bamboo in much the same way as any reinforcing cloth. For the bottom, use full length balsa in "tension" with a bamboo skin. It could work.

Because balsa weighs more per cubic foot than "normal" PVC core materials, the composite panels would need to be thinner to achieve the same "total board weight" Any loss of strength caused by this "thin-ness" could be offset by adding one more stringer to each side. With that in mind.......sure looks like it could work from where I sit. Add a little s-glass here and there and it should be just as strong as any "snake" board. Of course, top notch craftsmanship and full encapsulation of the balsa and bamboo is key.
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suffyjo



Joined: 02 Sep 2006
Posts: 4

PostPosted: Fri Jul 09, 2010 12:18 pm    Post subject: Reply with quote

Chesapeake Light Craft sells a glue-and-stitch kit for a standup paddle board.

http://www.clcboats.com/shop/boats/surf_boats/kaholo-stand-up-paddleboard.html

The instructor at the SUP class I took in Sacramento had a demo board. It's hollow and made of okoume marine ply with a fiberglass layer on the deck. He said it usually takes about 50 hours to build. The 14 footer weighs about 30 pounds according to the specs. I don't know how hard it would be to add a mast track and fin box or if the plans can be modified to make it smaller.
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csr7



Joined: 11 Feb 2007
Posts: 92
Location: Pistol River, Oregon coast

PostPosted: Fri Jul 09, 2010 12:19 pm    Post subject: Reply with quote

Balsa?
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thombiz



Joined: 25 Jun 2007
Posts: 618
Location: Corpus Christi

PostPosted: Fri Jul 09, 2010 12:43 pm    Post subject: Reply with quote

Aaaaah! Balsa porn: http://www2.swaylocks.com/forums/wood_ogres-balsa-hallow-wood-hallow-rail-fish-attitude
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tom_eberhard



Joined: 04 May 2000
Posts: 25

PostPosted: Fri Jul 09, 2010 1:22 pm    Post subject: Reply with quote

IMHO, your friend should sail more, build later. There are some cheap boards on craigslist...
He's gonna want a different board by the time he's done with it anyway.
Tom.
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swchandler



Joined: 08 Nov 1993
Posts: 6026

PostPosted: Fri Jul 09, 2010 5:42 pm    Post subject: Reply with quote

Bob, thanks so much for the Balsa porn. Wood Ogre is totally a trip, and he's got the creds to prove it. No BS, awesome expertise and craftsmanship, and a sense of humor. I have to say though, it takes some time to review the thread. In the end though, I have no regrets.

From the past work you've presented, and how you revealed it, I thinking that you've spent some time drifting and learning about this kind of stuff. I always appreciate the design and building projects that you share. Making fine things is so fulfilling and meaningful, and I know that thoughtful folks see the value in it.

Maybe I missed it, but Wood Ogre never revealed the board's weight. I have to admit to being very curious how things turned out in that respect. I guess if you bought the board, you'd know.
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colorit



Joined: 06 Sep 2004
Posts: 88
Location: No. Virginia/Hatteras Island

PostPosted: Sat Jul 10, 2010 4:48 pm    Post subject: Reply with quote

I would build it, sail it, if I didn't like it build another. It's not about what has the best performance, it's about doing it because you can. Will it be better than a Cobra board? Good question, but only you can answer that.

Post pictures when you're done.
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csr7



Joined: 11 Feb 2007
Posts: 92
Location: Pistol River, Oregon coast

PostPosted: Sat Jul 10, 2010 10:33 pm    Post subject: Reply with quote

Always good to see what Bert Burger had to say on sways. The real deal. Sunovasurfboards.com.
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bamer



Joined: 13 Dec 2014
Posts: 59

PostPosted: Mon Jul 12, 2010 2:22 am    Post subject: Reply with quote

csr7 wrote:
Always good to see what Bert Burger had to say on sways. The real deal. Sunovasurfboards.com.


Swaylocks would be a much better place to discuss the construction of a board like this.

If the guy is motivated and has fun being a garage builder, good on him.

Some out there have a love of building their own boards. It would not be a huge leap to build a windsurf board if he has done a surfboard or three (or ten).

I'm sure this Iwindsurf Forum can help with the shape parameters. But for materials and construction the knowledge over at Swaylocks is unbeatable.

For those who have never been: www.swaylocks.com
A good percentage of the stuff is in General Discussion

SUPER cool site. If you want to see some amazing stuff search the archives for 'resin tints and patterns' , 'compsand' , "hollow wood"

If he ends up doing a sandwich board there are tons of materials that can work. The sandwich is all about combining the layers to play off the relative strengths and weaknesses of each material.

Balsa can work great, but not as a core. Better as a skin or sub-skin. BUT you would need to compliment the balsa with some materials with excellent tensile strength and compression resistance. Thombiz did a good job eluding to this.
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thombiz



Joined: 25 Jun 2007
Posts: 618
Location: Corpus Christi

PostPosted: Mon Jul 12, 2010 9:27 am    Post subject: Reply with quote

This website dedicated to hollow wood surf boards may have some insights: http://treetosea.org/
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