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1. 

   Yakmandu
   Member

   I am moving the sail and amas from my Necky to my Seawind. My Necky has hard chines and sails well without a lee board, but the Kruger has a rounded hull and less lateral resistance. I’d like to repurpose a centerboard from a small sailboat that has a foil shape. Not being familiar with small sailboats, I am looking for ideas on a specific centerboard to repurpose. Ideally, I would mount it like a Balough lee board. Any ideas of a centerboard that might fit the bill? Bonus points if it is a rotomolded type material. This would make it easier to modify.

   Thanks for any ideas!

   Yakmandu

   Posted 1 year ago #
2. 

   Yakmandu
   Member

   I think I found a possible solution... if this is adequate for an AI, it should work for my Kruger. It is also reasonably priced. Just have to do a few measurements to insure it is deep enough. It is molded and foil shaped. We will see...

   https://www.austinkayak.com/products/543/Hobie-Mirage-Adventure-Daggerboard.html?utm_source=bing&utm_medium=cpc&utm_campaign=PLA&scid=scbplp543_1208_1&sc_intid=543_1208_1

   Posted 1 year ago #
3. 

   Chief
   Coastal Vagabond

   Why not just use a BSD leeboard?

   Posted 1 year ago #
4. 

   Yakmandu
   Member

   Looking for something lighter and a bit smaller. I have a 9sf Falcon sail and a 25sf Hobie sail (light air), not nearly the sail area of the BSD sails.

   Posted 1 year ago #
5. 

   Wizard
   Member

   Yakmandu, just backing up to the theoretical level for a minute-- board area is really more dependent on hull weight & drag than on sail area- small sails like you're talking imply lowish boat speed in ordinary weather, so you'll need more, not less, leeboard area to get good performance. The size of the Balogh board is a good match for expedition-loaded Kruger, regardless of sail area you set.

   That Hobie board you showed might be ok for auxilliary paddle-sailing in flat water, but I'd expect it to stall out and go sideways trying to sail to windward in a chop (maybe that's not the goal?).

   Also I don't see how the Hobie board can easily be modified to be a leeboard, the grooved head section would often be in the water and be very draggy.

   Sorry don't mean to sound negative; maybe look at something like this (used on ebay?):

   http://www.apsltd.com/sunfish-daggerboard-frp.html

   Posted 1 year ago #
6. 

   Yakmandu
   Member

   Wizard, thanks for your comments. I am definitely a paddle-sailor. My goal is a very light rig, including my expedition load. My Kruger is the light lay-up weighing only about 45 pounds, under 60 pounds with akas/amas/sail. I did look at the Sunfish daggerboard. I also looked at the BIC Open daggerboard. While I like the size of the BSD lee board, it’s pretty heavy. I will contine research before making a purchase. Thanks again.

   Posted 1 year ago #
7. 

   MicroTom
   Key Master

   You could convert a rudder too. There are a few options from Intensity sails. Go here and search for rudders. Laser II rudder looks good but may be heavier than a BSD.

   http://www.intensitysails.com

   Posted 1 year ago #
8. 

   CrazyRussian
   Member

   29er daggerboard is aluminum extrusion. It is relatively light compare to fiberglass boards

   It is also easy to make your own very light foil-shaped board from aluminum, using a tube as a backbone and an aluminum sheet to wrap around it, if metal working is your thing, of course.
   And if you really like light boards it is also possible to make it the same way as a model airplane’s wing made. Skin on frame.

   Posted 1 year ago #
9. 

   danceswithmullet
   Member

   Skin on foam. The materials required for this sized project, carbon fiber would be affordable. A used hobie 14 rudder blade on ebay would be the cheapest route and already has a molded in pivot point. DWM

   Posted 1 year ago #

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