Orion, International Folkboat.

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  • 10 May 2018 20:40
    Reply # 6147900 on 6141347

    There appears to be quite a strong diagonal crease across the third panel down. This would indicate that you need the LHP to be exerting some pull backwards, a little higher up. Since the LHP usually goes twice around the mast, I'd try taking it on up to the top batten, or to the yard, and see what effect that has.

    It's difficult to say more, without seeing some wind in the sail.

  • 10 May 2018 19:44
    Reply # 6147658 on 6141347
    Got The sail up. 

    YHP, THP, batten parrels, tack parrel in place. 

    Sheet system more or less...(Arne style)

    Does this look ok? 

    Comments, tips & tricks and critique more then welcome. 

    1 file
  • 08 May 2018 18:27
    Reply # 6143691 on 6141347
    Anonymous member (Administrator)

    Good, Frederik.

    My guess is that the camber is more constant and independent of stretch along the battens when the shelf foot method is used. That is more of an issue with my simple Barrel Cut Method.


  • 08 May 2018 17:31
    Reply # 6143393 on 6141347

    Hej Arne. 

    I’ll do that. We’ve aimed for 8% in the lower 

    panels and then 5%, 3% and 1% in the way up.

    I’ve stretched the sail quite thight for a start  

  • 08 May 2018 09:51
    Reply # 6142761 on 6141347
    Anonymous member (Administrator)


    I hope your new toy will not disappoint you. The sailplan, slightly modified from Ingeborg's,  should hopefully give next to neutral helm. Remember, there is room for shifting the sail a bit foreward or aft, until you are happy with it.

    One thing I should like you to do, when Orion is up and running, is to measure the actual depth of camber in each panel. I have forgotten what I recommended, and anyway, since Sebastian uses the shelf foot method, the result may be a bit more or less camber than you prescribed. In my Ingeborg the camber initially turned out to be just 7%, but then I eased the tension along the battens 3-4 cm, which resulted in 8% camber, just as I aimed for.

    Good luck!

    Last modified: 08 May 2018 12:09 | Anonymous member (Administrator)
  • 08 May 2018 09:16
    Reply # 6142741 on 6141347

    Hi David and Annie. Thanks for the comments. And David, also thanks to you for some tips and tricks along the way. 

    No inboard. Old 5hp 2 stroke Yamaha, mounted on a bracket. 

    For comparison, Arne will have to head south as I’ll be a bit too busy skippering ferry & family this summer.

    Pictures I can manage 

    Last modified: 08 May 2018 09:18 | Anonymous member
  • 08 May 2018 07:58
    Reply # 6142680 on 6141347

    Looking good! I see that the Weathermax 80 sail has been made with the shelf foot method of adding camber - the best. It will be very interesting to see a photo of this sail hoisted and set, alongside a photo of Ingeborg's sail, hoisted and set. It would be more interesting still to see both both boats sailing side by side, if you could get to Stavanger this summer.

  • 08 May 2018 07:36
    Reply # 6142677 on 6141347

    She looks great.  Does she have an inboard engine?  I guess she should trim very nicely when you have one or two people in the cockpit.  I hope you enjoy sailing her!

  • 07 May 2018 20:18
    Reply # 6141853 on 6141347
    Anonymous member (Administrator)

    I altered Orion's rig a bit, compared to Ingeborg's rig, to move the CE a bit forward. The diagram below shows both rigs plus the Bermudian rig.


  • 07 May 2018 17:45
    Message # 6141347

    Hi all. 

    My IF Orion is back in the water with her new rig 

    All went well. The mast fits like a glove and she floats nice empty.  Slightly down by the head, with approx. 65 kg mast & fittings and 50 kg. of yard, sail & battens. 

    She's basically a copy of Arne Kvernelands Ingeborg with a 34,5 sq m sail and AR 2.0

    The sail was made by Tuchwerkstatt in Germany. Aluminum fittings & partners by the local welder. The rest put together by myself & friends. 

    The next couple of days I'll be fiddling with halyards, parrels, sheetlets & what have you. Then I'll find out what this junk rig fuss is all about...

    A special thanks to Arne for help & inspiration.

    3 files
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