Small trimarans under 20'

Discussion in 'Multihulls' started by Doug Lord, Jun 24, 2012.

  1. Kayaqua
    Joined: May 2015
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    Location: New Zealand

    Kayaqua Junior Member

    Nice work, hope the weather improves soon. Is the sail and rig an adaptation or made to suit?
     
  2. Cholsson
    Joined: Aug 2015
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    Location: Gothenburg

    Cholsson Junior Member

    Thanks! I hope that too.
    The sails where custom made by North for the previous version of the boat. I have rebuilt the main hull, side hulls and beams. Added some inches here and there but the sails should still fit. The mast is the same but I have customized it a little to be rotating this time.

    But we will see if it works or if I have to rebuild something good. The gennaker I still haven't figure out how to furl/rise :)

    Chris
     
  3. Kayaqua
    Joined: May 2015
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    Location: New Zealand

    Kayaqua Junior Member

    I'm in the same boat! in a manner of speaking; building a sailing/paddling tri kayak. Still working on outrigger wings and pontoons. You may be interested in the Triak I think it's called; Has developed different ways for the gennaker. I developed a dual wing spinnaker system for my original kayak sailing up to 4 sq mtr. Now I have carbon wind surf mast but no ideas yet about a sail which I'll need to furl or rise. Rise probably to start with. Maybe rings sliding in a track? Something easy.
     
  4. Cholsson
    Joined: Aug 2015
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    Location: Gothenburg

    Cholsson Junior Member

    Yes! It would be interesting to know how you rise the gennaker. I really need some good solution for this :)

    Chris
     
  5. waynemarlow
    Joined: Nov 2006
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    Location: UK

    waynemarlow Senior Member

    Have a look at top down furling for spinnakers on YouTube.
     
  6. Kayaqua
    Joined: May 2015
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    Location: New Zealand

    Kayaqua Junior Member

    Sail systems

    I've only developed a spinnaker system for my kayak designs. The Triak is a US design and build using a furling main and a gennaker that rises and stows into a snuffer box in the bow. Here's a link to the developer of the system; There may be better info on the net. http://www.morrellimelvin.com/triak/
     
  7. Kayaqua
    Joined: May 2015
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    Location: New Zealand

    Kayaqua Junior Member

    I rise the spinnaker with a looped halyard running over a wheel on top of mast and through a cleat on the deck just in front of cockpit and behind the mast. I'm able to release the halyard from cleat and sheet in the spinnaker head to my hands and stow it. I can't describe too much about the sheet end attachments in public forum other than to say I'm able to control the luff and leach of the sail. But this system may not be suitable for a gennaker sail which requires to be attached to bow or maybe a bowsprit.
     
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  8. Cholsson
    Joined: Aug 2015
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    Location: Gothenburg

    Cholsson Junior Member

    A small video from my test-sailing last week.
    Wind 4-10 m/s. Water temperature 1C.
    Also joined the local club race in the end of the day.
     
    Last edited: May 7, 2017
  9. Vantage475T
    Joined: Aug 2016
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    Location: Lymington,UK

    Vantage475T Vantage475T

    Managed to get out briefly on the Isoskiffmaran botch up on Sunday in very low winds. The goPro stopped after 20 minutes but we got some video of me missing tacks when my hand also stopped working and just generally being inept.

    We got some GPS and map data which I have put on the website as well:
    www.smalltrimaran.co.uk
    and will hopefully get some more this weekend as the sailing club is organising a trip to the Isle of Wight or along the coast if the weather is too dodgy.
    I wil lget some more GPS tracks up shortly from earlier trips as time permits.
    No time to be building the other side with a revised and improved flaot but hopefully will fit it in amongst work and making a new summer house.
     
    Doug Lord likes this.
  10. Richard Woods
    Joined: Jun 2006
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    Location: UK, USA and Canada

    Richard Woods Woods Designs

    I just uploaded another video by Patrick (a member here) in France showing his Strike 20 sailing to windward at 11-12 knots.



    Note the gps on the right of the screen. As you watch see how the distance goes from 0 to .5 mile in under 2 mins 30 secs. And that is to windward!!

    The main hulls is a plywood Strike 20. The outriggers are Nacra 5.8 beach cat hulls, the mast an extended Hobie 18, fitted with running backstays.

    You can see the whole video here Dropbox - Strike20 to windward.mp4 https://www.dropbox.com/s/rt2vhoeaooyzkt8/Strike20%20to%20windward.mp4?dl=0

    and more on the Strike 20 here Sailing Catamarans - Strike 20 racing trimaran using a F18 beach cat for hulls and rig http://sailingcatamarans.com/index.php/designs-2/27-trimarans-under-25/433-strike-20

    It's certainly a cheap way to get a very fast boat!

    Richard Woods of Woods Designs

    www.sailingcatamarans.com
     
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  11. Cholsson
    Joined: Aug 2015
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    Location: Gothenburg

    Cholsson Junior Member

    Looks nice! Good with the Garmin Virb data in the video. Also good using knots.
    The Strike 20 seems pretty fast. What other boat is in the same speed area/rating?

    Chris
    www.chryz10.com
     
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