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Adding Daggerboard to an SUP
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JPonHudson



Joined: 10 Apr 2013
Posts: 19

PostPosted: Sun Nov 27, 2016 9:42 pm    Post subject: Adding Daggerboard to an SUP Reply with quote

Do you know where I can get a daggerboard kit that I could install on and SUP? I am in USA
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grantmac017



Joined: 04 Aug 2016
Posts: 569

PostPosted: Sun Nov 27, 2016 9:58 pm    Post subject: Reply with quote

Retractable or fixed?
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JPonHudson



Joined: 10 Apr 2013
Posts: 19

PostPosted: Sun Nov 27, 2016 10:56 pm    Post subject: Reply with quote

grantmac017 wrote:
Retractable or fixed?

Retractable
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Awalkspoiled



Joined: 21 Sep 2013
Posts: 44

PostPosted: Mon Nov 28, 2016 11:07 am    Post subject: Reply with quote

Ypu could easily pull the Allgaier Cassette and daggerboard from any 80s era HiFly or Wayler but the issue would be matching hull thickness. You might consider instead using the Kona system which just involves two plates which screw into the deck: http://store.konaone.com/us/footstrap-set-445.html

Youll still have to rout and glass an accurately sized opening. If it were me Id look at some of the hybrid designs (exocet, Kona) which arer already set up for both paddling and sailing.
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Arrgh



Joined: 05 May 1998
Posts: 856
Location: Rio

PostPosted: Mon Nov 28, 2016 12:05 pm    Post subject: Reply with quote

Both the job and the probable result (sticky daggerboard, water spraying thru) sound like a giant PITA. Have you considered a power or Tuttle fin box?
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bred2shred



Joined: 02 May 2000
Posts: 925
Location: Jersey Shore

PostPosted: Mon Nov 28, 2016 12:16 pm    Post subject: Reply with quote

dennis_c wrote:
Both the job and the probable result (sticky daggerboard, water spraying thru) sound like a giant PITA.


Agree.

You would be much better off selling your board and replacing it with one that already comes with a dagger board. What you're talking about doing would be a very involved, custom project with likely a poor result if you don't have much experience working on boards.

sm
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wynsurfer



Joined: 24 Aug 2007
Posts: 880

PostPosted: Mon Nov 28, 2016 12:55 pm    Post subject: Reply with quote

I have a Tuttle box that accepts an appropriate fin for a daggerboard on my Starboard wind sup and like it. Board turns on a dime with or without the dagger fin. Goes up wind real well too. I take it out when there are waves to play in, or when sand bars present a hazard. I think it would be an easy modification without the possibility of ruining your board.
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d0uglass



Joined: 28 May 2004
Posts: 1196
Location: Bonita Springs, Florida

PostPosted: Mon Nov 28, 2016 3:59 pm    Post subject: Reply with quote

I would not recommend trying to put a retractable daggerboard in a sup. Won't fit right, adds too much weight, lips stick or flap, etc.

It's much easier to add a fixed fin.

Just install a US Box finbox on the belly of the board, about a foot behind the mast base. Put a short but fat fin in the finbox. For the center fin, use something like one of these SUP race fins. They are designed to keep the board going straight at slow speeds, and not catch weeds, and they work pretty good as a fixed dagger fin.

https://futuresfins.com/en-us/runner-jb-keel---carbon-fiber---carbon-neon-yellow-9004-419-12-detail

I have done this before and it works pretty well. The upwind angles that you get aren't as good as on a real windsurf board with a daggerboard, but they are still MUCH better than without any dagger-fin.

_________________
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http://jimbodouglass.blogspot.com/2010/11/updated-windsurf-calculator-online.html
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konajoe



Joined: 28 Feb 2010
Posts: 496

PostPosted: Mon Nov 28, 2016 6:56 pm    Post subject: Reply with quote

Seems like you would need a lot of reinforcement. A centerboard would take a pretty big load. I'm guessing that boards with centerboards are heavier by more than just the weight of the centerboard and cassette.
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beaglebuddy



Joined: 10 Feb 2012
Posts: 1120

PostPosted: Tue Nov 29, 2016 5:10 pm    Post subject: Reply with quote

Just try sinking the windward rail. "Railing upwind"
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