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Plywood Foil Board

Here you can exchange your experience and datas about your home build boards
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daspi
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Joined: Fri Jun 11, 2010 1:55 am
Local Beach: Lynn - Nahant Long Beach, Revere Beach, Dog Beach
Favorite Beaches: the ones I can get to within 10-15 minutes
Gear: Eleveight FS 12m, 9m and Core XR5 7m, Core Section 8,10,12m
and lots of other junk kites in the shed
Cabrinha Custom and Ace twin tip, Plywood LW boards
Surfboards: Tomo Vader, Kiteloose Nirvana, Cabrinha Skillit
Foil: F-One Pocket with Cloud 9 mast and wing, Plywood pocket board
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Re: Plywood Foil Board

Postby daspi » Thu May 28, 2020 5:11 pm

kollac wrote:
Thu May 28, 2020 2:13 pm
I have leftover cedar from my MAKO twintip build (I ripped it into strips and built the same way you'd build a kayak/canoe). I may rip the remaining board into flat 3/8 inch boards/wide strips and make my own "plywood". Just force some shape into it when I glue it all up to achieve rocker and maybe some minor concave.
Sounds interesting. I'd like to follow your build, keep us posted ether here or start a thread.

Wbrussow
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Re: Plywood Foil Board

Postby Wbrussow » Sun Sep 13, 2020 3:12 am

Hello, for my foil board build, here is my plan:

1/2” XPS core
1/8” ply top and bottom
3/4” half round to cap the perimeter
1/2” x 6inch wide core between feet (also what the mast will bolt to)

I doubt I will need more than a 4oz glass layer on top and bottom, though I am open to suggestions. I am hoping someone can give me insight as to how much epoxy to buy. Not looking to have a bunch left over. The foil is an LP kite foil, 720cm^2 wing

Cheers!

Breze
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Re: Plywood Foil Board

Postby Breze » Sun Sep 13, 2020 11:32 am

Here is a laminate calculator https://www.r-g.de/en/laminatecalculator.html
Can not help you with yout initial question, as you don`t mention lenght and width.
Remeber the wood will drink a lot. Better some left over , than running out of epoxy.
Overthink ply on bottom, it will be heavy. Think instead of a leash for your LP
These users thanked the author Breze for the post:
Wbrussow (Sun Sep 13, 2020 6:20 pm)
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Wbrussow
Rare Poster
Posts: 13
Joined: Sat Apr 27, 2019 7:20 pm
Local Beach: Vancouver Island, Canada
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Core XR3
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Re: Plywood Foil Board

Postby Wbrussow » Sun Sep 13, 2020 4:50 pm

Thanks Breze,
I am not familiar with a leash for Hydrofoils. Still so new to this that I have never tried foiling. Where would I attach the leash to Hydrofoil?

For board size, I am thinking about about 5ft x 22”

Breze
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Re: Plywood Foil Board

Postby Breze » Sun Sep 13, 2020 5:52 pm

5ft x22" or 150x 55 is way too big. If you are kind of normal size go for 130x46
It seems that bonding Xps / wood works better with a PU glue. That was the result of a test a very good board builder did, he compared diff bondings. Epoxy works, but PU was way better.
The leash could be a simple 4mm dyneema line between your nice LP and the tail of your board eg the back strap. You wouldn`t be the first who ripped out his foil.
I built my sec board like this viewtopic.php?t=2400849. Now i enjoy a nice production board.
But i would recommend you to buy a used one or a cheap Gong , this : https://www.gong-galaxy.com/en/product/ ... ch-fsp-2x/

Edit, here you can see the leash foil to board https://oaseforum.de/attachment.php?att ... 1477247433
These users thanked the author Breze for the post:
Wbrussow (Sun Sep 13, 2020 6:20 pm)
Rating: 8.33%

Wbrussow
Rare Poster
Posts: 13
Joined: Sat Apr 27, 2019 7:20 pm
Local Beach: Vancouver Island, Canada
Style: Freeride
Gear: OR Razor
Core XR3
Brand Affiliation: None
Has thanked: 4 times
Been thanked: 2 times

Re: Plywood Foil Board

Postby Wbrussow » Sun Sep 13, 2020 6:20 pm

Thank you for taking the time to answer, Breze. I appreciate it!

The LP has a lengthy mast, 100cm. Probable not the best for learning, but I got it for a great deal. 600 CAD. I was thinking of making the board longer to help with not catching my front edge while learning. I also have an older Liquid Force 5’3” fish, but suspect it is not nearly strong enough to directly mount the foil, otherwise I would just drill some holes and “send it”.


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