Cambered Sail, different batten design (or, segmented sails, take two)

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  • 06 Mar 2014 20:35
    Reply # 1512361 on 1506125
    Deleted user
    It's all on our Help page, Gary :-)
  • 05 Mar 2014 13:48
    Reply # 1511030 on 1506125
    Deleted user
    So that's how to link to the public profile..
    Thanks Roy.
  • 04 Mar 2014 21:19
    Reply # 1510586 on 1509986
    Gary King wrote:I should have added to my post that our one piece sails were still sewn in a room not much larger than a single panel. We had to take the bundle out in the street to lay it out, and that was only to see what she looked like.

    Hi Gary, you forgot to click on "My directory profile" at the top of your profile page before copying the URL to your photo, so the link in the above post doesn't work.  Here is a link that will work.
    Last modified: 04 Mar 2014 21:21 | Anonymous member
  • 04 Mar 2014 02:38
    Reply # 1509986 on 1506125
    Deleted user
    I should have added to my post that our one piece sails were still sewn in a room not much larger than a single panel. We had to take the bundle out in the street to lay it out, and that was only to see what she looked like.
    Last modified: 05 Mar 2014 13:47 | Deleted user
  • 02 Mar 2014 11:07
    Reply # 1508937 on 1506125
    Deleted user
    I have to agree it's not as simple as first perceived, and simple is the best. And Gary thanks I will have a good look at Arne's method.

    Reading your comments it's clear other people have tried and like the idea, so maybe there's something in it.

    O.K. so I'm not giving up just yet, found these profiles on the web:

    http://www.octanorm.de/Pages/Products/ProductBrowser2.aspx?dep=VMS&chid=23&pfid=121

    They come in lengths of max 7 meters, I don't know the price/grade and strength of the profiles so would first have to find out. It's possible to insert an extra tube in some of the profiles to strengthen them, very interesting.


      



    Last modified: 04 Mar 2014 22:01 | Deleted user
  • 01 Mar 2014 23:36
    Reply # 1508787 on 1506125
    Sako,
    My advice would be to stay with a simple round tube for your battens. You might find something with two grooves, but it probably won't be optimum in terms of the strength and stiffness you need. In many, many miles of sailing, I've never felt that I needed to take out a panel for repair. It's usually a case of either gluing a patch on a small hole, or taking the whole sail off at intervals for a major overhaul.

    On the other hand, I've needed to take out a batten, and then to find or make a replacement for it, far away from where I got the original battens. 

    Now that we have several ways of sewing sail panels together and making pockets that do not need the whole sail to be laid out on the floor at once; and now that Roger has successfully made his sail with the batten acting as a "hinge pin", I can't see any justification for adding tracks to battens.
  • 01 Mar 2014 21:30
    Reply # 1508749 on 1506933
    Deleted user
    sako klinker wrote:My thinking is to find alum tube with the two "tracks" extruded into the tube, so no need for tracks riveted on to the battens, and not use rope but the luff tape used for roller furler sails. This way the sails and battens or not much heavier then normal, and the panels should slide in very smoothly. I love silicon spray.

    We looked for tube of the sort you suggest, i.e. 'grooved', but couldn't locate of the size we needed or at a sensible price. Attaching tracks was our solution. Well you have half a dozen options, Sako. Good here, innit?
    Last modified: 01 Mar 2014 21:33 | Deleted user
  • 01 Mar 2014 01:23
    Reply # 1508316 on 1507647
    David Thatcher wrote:

    Yeh Mate - nother Kiwi here, don't listen to those Aussies they don't know what theyr'e talking about, well apart from Gary and Graham. As for those poms and all the others, well we all know that real life is 'down under' here in the colonies!!

    The problem is all those types in Oz are called Gary... so it gets difficult... and the ones that are not called Gary seem to be called Graham... It's good advise you give but difficult to implement!
  • 28 Feb 2014 06:39
    Reply # 1507647 on 1506125
    Deleted user

    Yeh Mate - nother Kiwi here, don't listen to those Aussies they don't know what theyr'e talking about, well apart from Gary and Graham. As for those poms and all the others, well we all know that real life is 'down under' here in the colonies!!

    Actually what I really wanted to say was keep it simple if you can. Having sailed a junk rig boat now for almost 7 years including some offshore cruising I would go with a cambered panel sail (of whatever method suits) and keep the battens in pockets. Certainly the method we used to build Footprints sail has worked well so far. My sail is 6.5 metres through the cord, (David Tyler's close to 7m from memory) so we know all about sewing lots of seam length. With my first sail I never had to take the battens out once the sail was assembled for the first time, and similarly with my new sail, once I had all the battens sorted and finally installed I have not needed to take them out and that is almost 2 years go and includes over 2000 miles of ocean crossings.  

    It should also be noted that on both Footprint's and Tysytie's sails not only are the battens in pockets but the yards and booms as well. So far this is working out well and while the method may involve a couple of extra hours of sail making time it produces a much more aerodynamically clean sail (for those of us who are interested in such things).

    Last modified: 28 Feb 2014 06:45 | Deleted user
  • 27 Feb 2014 23:32
    Reply # 1507449 on 1506125
    Deleted user
    Most simple is Arne's method. Once the barrel shapes are cut out, its all long straight stitches from there. These other methods look terribly complicated.

    Handling a big sail was quite easy, we didn't even sew on the floor, fed the sail up to the table, to a base model Janome machine too. Never at any stage did a panel need to be bundled up and fed through the arm of the machine. Batten pockets and edges of 2 panels are sewn together. Very fast.
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