Here you can exchange your experience and datas about your home build boards
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Onthewater860
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Postby Onthewater860 » Tue Mar 08, 2016 5:05 pm
What are people using for sliding hydrofoil 4 bolt mount boxes? I'd like to build or modify a board to except a box that let me trim fore and aft the foil.
Thanks ahead.
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tkettlepoint
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Postby tkettlepoint » Wed Mar 09, 2016 3:17 am
long board boxes. work
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alsbirk
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Postby alsbirk » Wed Mar 09, 2016 1:04 pm
make sure the boxes are glued to both the top and bottom part of the laminate or you will fail, that counts for any hydrofoil mount.
/T
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gmb13
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Postby gmb13 » Wed Mar 09, 2016 6:21 pm
Chinook US Boxes.
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Gunnar
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tkettlepoint
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Postby tkettlepoint » Sat Mar 12, 2016 3:54 am
Thomas is right make sure it is make sure it is glued to top and bottom of the lams because if you don't it will just sink into the board or pull out..
terrie
alsbirk wrote:make sure the boxes are glued to both the top and bottom part of the laminate or you will fail, that counts for any hydrofoil mount.
/T
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ankers
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Postby ankers » Thu Dec 29, 2016 10:15 am
any pics available of the building process?
thanks
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TomW
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Postby TomW » Sat Jan 07, 2017 6:32 pm
Never done it, but If you are going to build from scratch, you should mill out foam area where each box is going and drop in high density foam area , like an 80 kg/ m3 density. from deck to bottom. Then you can route out the HD for box, glue in the box with glass wrap. You could screw a wood block to bottom of boxand Shape it to deck form. Glue it in and then glass the blank. That would be strong.
Friend of mine has the Slingshot board with boxes and he has trouble keeping the screws tight.
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DartBoard
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Postby DartBoard » Sun Jan 08, 2017 9:13 am
Ditto on Gunnar's comment. The Chinook mast boxes seem ideal. I've seen them used in KFA production boards too.
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Jzh_perth
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Postby Jzh_perth » Sun Jan 08, 2017 1:53 pm
Exactly what Gunnar and TomW wrote.
Don't just rout out the board for each box - the board foam is not strong enough. make a much bigger insert out of Core-Cell glued around and between the 2 chinook boxes - this also helps keep the tracks parallel and desired spacing. Then glue that whole thing into the board and glass over.
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TomW
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Ozone Hyperlink V1 7m
Hyperlink V2 9m, 13m
Concept Air Wave 4,5m
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Postby TomW » Tue Jan 10, 2017 7:39 pm
You think I need to put in HD foam around these?
Bolting foil p i ate thru entire board. I have carbon tubes glassed onto wood stringers that I will embed in more glassfiber into these grooves. putting in from deckside so bottom lams are exposed, but not cut through. Will glass deck with several layers. Bottom has radical channels so didn't want to mess them up, made spacer for bottom that fits bottom form and compensate for tail rocker.
Board is about 15 -20 mm thick at that spot.
Seeing the box assembly, I'm thinking to add HD foam around the wood stringers... Perhaps 12 mm strips of HD at 90 degrees to each side wood stringers?
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