Batten Stagger & Double Sheeting

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  • 17 May 2016 22:48
    Reply # 4025520 on 1400343
    Deleted user

    My sail uses euphroes so I am considering adding a long springy rubber bungee cord to the euphroe to pull the euphroe forward when tacking to keep the sheetlets from blowing back and getting caught on the leech.  It may be a while before I try it since I need to make some new battens first along with trying to wrap up a lot of land based stuff.

    Last modified: 17 May 2016 22:49 | Deleted user
  • 17 May 2016 22:31
    Reply # 4025497 on 1400343
    Anonymous member (Administrator)

    There might be another way of avoiding sheet-batten-boom tangle. If one coulkd extend the booms and battens sufficiently with light "fence battens", say an extra metre long, maybe that would do the trick.

    Arne 

  • 17 May 2016 20:58
    Reply # 4025357 on 1400343
    Deleted user

    To follow up on my previous post, our sheets are attached to the battens a little less than a meter in from the leech and the battens are flush with the leech.  The boom sticks out a little past the leech.  The manner in which the sheets catch the leech is exactly as shown in the "Practical Junk Rig" drawing in the double sheet discussion.


  • 16 May 2016 09:24
    Reply # 4022017 on 1400343
    Anonymous member (Administrator)

    It is funny how different people see problems differently. I have had several junk rigs with the sheets sweeping over the cockpit, and I guess I have got used to it. My practice when gybing has been to sit with the back to the sail before the gybe starts. The sheets then just slides over my back if the wind is not strong enough to let it fly in an arc behind the boat.

    Still, I can see the point of trying the double sheeting, just for fun, at least. If it doesn’t work, you can go back to central sheeting and then add an arc (metal or laminated wood bar) over the cockpit, to save your hats.

    On the last rigs, I have been careful to terminate the battens flush with the leech, to reduce snags. That can't hurt.

    Good luck!

    Arne

     

    Last modified: 16 May 2016 09:26 | Anonymous member (Administrator)
  • 16 May 2016 03:38
    Reply # 4021680 on 1400343

    Thank you for your replies Amos and Shemaya and merci to Eric.

    I think we will cut some windows in the sail about 1 metre in from the leach, as you suggest Eric, and try the double sheeting. As you all know any stray line that can catch will sooner or later but if the double sheeting works, I will tidy up the leach, making it as smooth as possible, to avoid any potential problem areas. On our previous boat Pacific Spray there were much less snarl ups after we changed to double sheeting. I have reread your article in Issue 70, Shemaya, and the idea of getting the sheets out of the cockpit really appeals to me, especially on a small boat, where there is nowhere to hide or duck. 

  • 14 May 2016 20:07
    Reply # 4020402 on 1400343

    I have double sheeting on AUKLET, and I like it. This was to keep the cockpit clear, and I'm glad I did it. The rig also has euphroes, which I like. Even though the sheetlets are attached to the battens some distance from the ends, the running spanlines do sometimes catch on the ends of the battens, when conditions are just right for it, which is bothersome. My plan is to adjust the sail on the battens so there's not so much batten extending past the sail to catch those lines.

  • 13 May 2016 14:59
    Reply # 4018661 on 1400343

    Bonjour

    If you have double sheeting, you don't have to fix the sheeting to the leach; it may be fited forwad on the batten.

    I've modified Mingming, but didn't test her yet, with double sheeting in order to set lambda sheeting (two sheeting points on a single batten with an horizontal span). Le forward one is about one meter from the leach and the rear one is on the previous single sheeting holding point.

    My goal was to set more flexible batten, specially at the rear part of the sail, in order to have more camber by light wind while limiting the camber when the wind increases.

    Eric

    Last modified: 13 May 2016 15:20 | Anonymous member
  • 13 May 2016 01:40
    Reply # 4017387 on 1400343
    Deleted user

    We have double sheets on our Gazelle and while we do not have a lot of experience sailing her yet, I do know the sheets and sheetlets WILL get caught around the boom and batten ends on the leach when the wind is ahead of the beam as they all blow back when the sail comes around.  I think this is solvable and I hope to try a couple things this year to fix this.

    Last modified: 13 May 2016 20:45 | Deleted user
  • 12 May 2016 02:55
    Reply # 4014449 on 1400343

    We are contemplating trying side by side double sheeting on Blondie. The advantages that we see are:

    * Sheets will not cross the cockpit area leaving our hats and heads in place

    * Access out of the hatch will much easier

    * The sheets and sheetlets will not get caught around the boom or batten ends on the leach, unlike single sheeting

    * We can install a small Bimini in the cockpit to keep out of the sun

    * The double sheets will firmly hold the bundle in place at anchor or on the mooring

    The disadvantages are:

    * The distance from the boom to the 2 new sheeting points maybe too short and prevent the sail from setting correctly

    * A bit of tricky work attaching the sheets to both sides of the battens

    * More sheet handling

    * More lines and blocks to buy

    Last modified: 12 May 2016 03:28 | Anonymous member
  • 28 Sep 2013 21:25
    Reply # 1400478 on 1400343
    Double sheeting side-to-side is generally a pain, and not to be contemplated unless the fore and aft space is insufficient for single sheeting.

    Double sheeting to the top-half and bottom-half of a single sail is a boon, giving much better  control when deeply reefed.

    Double sheeting on a cat with a mast in each hull is totally and absolutely unnecessary, and in any case could only be used on one tack for each sail.

    Double sheeting on a tabernacled single mast on a cat would only be needed if the sail were more deeply cambered than a normal cat would need.


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