Here you can exchange your experience and datas about your home build boards
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Jyoder
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Postby Jyoder » Tue Aug 01, 2017 8:58 pm
My diy plywood board broke yesterday when I nosedived it due riding too high and surfacing the wing. I had kerfed the nose to give it some kick and it broke at the seam. These boards get a lot of sudden stress loading on crashing like that. On one hand you need area in the nose to help plane on touchdown but too much adds need for extra reinforcement and weight.
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faklord
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Postby faklord » Tue Aug 01, 2017 9:13 pm
TomW wrote: ↑Tue Aug 01, 2017 6:54 pm
tmcfarla wrote: ↑Tue Aug 01, 2017 6:06 pm
That sucks, hope you can fix it, looked like a nice board. What was the carbon/glass layup on this board?
No fix. Goes in the trash.
...
What I would do next time
1. Thicker foam over all, increase to 30mm min.
2. Longer piece of HD foam(?)
3. Deck and bottom would get 4 layers of 250g Uni D carbon about 200mm wide entire length of board
Another option is a couple of wood stringers from the foil mount up to f foot position. Something like 1-2cm wide red cedar or paulownia. Adds a lot of strength only where it's needed and not much of a weight penalty.
I bet you could even do a repair with a few stringers? Put them in from the top glass/carbon patch and cover with deck pad. Seems a shame to bin such a beauty.
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TomW
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Gong Veloce M, 100cm carbon mast
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Postby TomW » Tue Aug 01, 2017 9:46 pm
Yeah probably. Haven't tossed it yet...
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Benicia Wind
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Postby Benicia Wind » Tue Aug 01, 2017 10:51 pm
K-Roy wrote: ↑Mon Jul 31, 2017 12:23 pm
My first DIY pocket board,
112 x 40 cm
1.5cm thick wood plus deck pad 5mm.
Total wieght: 6.5 kg
Board: 3.5 kg
Foil: 3 kg
Its + 0.5 kg, but feels lighter compared to my regular board when on the beach, probably because of the smaaler size...
I not yet had the chance to try it so will update on water start etc.
Im happy to say at least it floats with the foil.
cheers
This is the kind of board I want to make. Can you give a description of the construction? Does it float OK?
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K-Roy
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Taiba, Brasil
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- Style: strapless SB & strapless FB
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FW Vader, OR Duke, Mitu Pro, Fone foil
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Postby K-Roy » Wed Aug 02, 2017 8:24 am
hello,
The board is laminated 15 mm.
It was originally a prototype for wake skate and a friend of mine give it to me, so its not tested as far as the rocker and shape is concerned.
We are having windless days over here, so I have to update you on how it works.
It floats OK. the front sticks up about 10cm from the water the back 1-2 cm.
The part where the mast is, just about water level.
cheers
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K-Roy
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- Local Beach: Lake Balaton
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- Style: strapless SB & strapless FB
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FW Vader, OR Duke, Mitu Pro, Fone foil
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Postby K-Roy » Sun Aug 06, 2017 10:00 pm
Benicia Wind wrote: ↑Tue Aug 01, 2017 10:51 pm
K-Roy wrote: ↑Mon Jul 31, 2017 12:23 pm
My first DIY pocket board,
112 x 40 cm
1.5cm thick wood plus deck pad 5mm.
Total wieght: 6.5 kg
Board: 3.5 kg
Foil: 3 kg
Its + 0.5 kg, but feels lighter compared to my regular board when on the beach, probably because of the smaaler size...
I not yet had the chance to try it so will update on water start etc.
Im happy to say at least it floats with the foil.
cheers
This is the kind of board I want to make. Can you give a description of the construction? Does it float OK?
Today we had good wind here and I had my first session on the new pocket board.
I have to say I'm very happy with the result.
The water start needed a few try, but once diled in it was ok.
Since its a very low volume board it needs wind, I used it today in 15-20 knots.
I will use my regular board for low wind sess.
One other thing... it does not drift down wind like a regular foilboard... I actually did some body draging today. (its a firs since started foilig)
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downunder
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Postby downunder » Mon Aug 07, 2017 4:21 am
Benicia Wind wrote: ↑Tue Aug 01, 2017 10:51 pm
K-Roy wrote: ↑Mon Jul 31, 2017 12:23 pm
My first DIY pocket board,
112 x 40 cm
1.5cm thick wood plus deck pad 5mm.
Total wieght: 6.5 kg
Board: 3.5 kg
Foil: 3 kg
Its + 0.5 kg, but feels lighter compared to my regular board when on the beach, probably because of the smaaler size...
I not yet had the chance to try it so will update on water start etc.
Im happy to say at least it floats with the foil.
cheers
This is the kind of board I want to make. Can you give a description of the construction? Does it float OK?
Good build.
However, 3.5kg is very, very heavy for 112x40 board.
My Paulownia DIY from here
http://kiteforum.com/viewtopic.php?f=107&t=2387451
is 1.87kg with fins and SS inserts and you can see the construction.
Personally I would always reach for a lighter board no matter what.
D.
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K-Roy
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FW Vader, OR Duke, Mitu Pro, Fone foil
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Postby K-Roy » Mon Aug 07, 2017 10:18 am
Hello Downunder,
Beautiful board, congratulations!
You are right, the board is heavy for its size.
This is only a "prototype" in a sense that I was not sure about the size I will be able to successfully ride as this is my first try with a strapless foil pocket board.
We have very choppy conditions at my home spot.
A laminated wood board is very strong, which is a welcome, since I broken my first board in half, just like TomW (see page 2) and punched a few holes in my second carbon board, when trying freestyle trick's.
I see two possibilities to reduce weight in my next try...
The laminated wood could be less then 15mm. as its a very strong construction and the KF to plate converter made of carbon.
(its some kind of aluminium and I think its about 300gramms)
Of course I could loose the full deck pad, and use wax or sugar grain etc. as well.
Regarding the size, I know there is a few cm in the front, but for now I will keep it as it is, because with the strong rocker it helps in tuch downs.
The target is to get a board which is not longer than my foil mast, so I can pack it in a bag to travel and check it on a plane with out extra charge...
any idea wellcome!
cheers
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K-Roy
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- Style: strapless SB & strapless FB
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FW Vader, OR Duke, Mitu Pro, Fone foil
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Postby K-Roy » Sat Aug 12, 2017 11:46 pm
"The laminated wood could be less then 15mm. as its a very strong construction..."
Well, I was wrong, so back to the drowing board.
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Jyoder
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Postby Jyoder » Sun Aug 13, 2017 1:40 am
Was that ply board glassed? Looks like it wasn't. Also, the ply layers look like only a couple very thin hardwood and rest filler. I'm using Baltic birch which has much better strength but am glassing it as well with 2-3x 6 oz. s cloth. Should be bullet-proof.
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