Reefing & Unreefing when sailing downwind

  • 02 Oct 2014 15:33
    Reply # 3114559 on 3103777
    Deleted user

    I agree with Annie on this one,---   Ron Glas`s main is a bit of a brute and to leave it up too long is to create problems, we haul the sheets tight so that the main is centred with the wind absolutely dead aft ---- then by easing the halyard, and playing the YHP and sheet its possible to shake the sail down with a tug on the downhauls to get things  moving. our battens are heavy wood and the yard is very heavy. If all else fails we would rather round up into the wind quickly [Ron Glas will tack very quickly] and then rattle the sail down under total control.----  not too happy lying beam on to a big sea TONY&SALLY

  • 01 Oct 2014 09:26
    Reply # 3112825 on 3103777
    Anonymous member (Administrator)

    I can see Paul’s point in fitting a few downhauls before his big voyage. I, of course, need not have such worries. My reasons for reefing downwind are rather that I have no room to move, being surrounded by other boats or by rocks  -  or  I just want to try it out of curiosity. I have said it before and I repeat it. If you have room for it, I suggest you try moving the halyard’s slingpoint a bit (3 – 5%?) aft of the middle of the yard. With a light tug in the THP and YHP, the sail is then more likely to come down nicely. I have no fixed luff parrels to add friction.

    When hoisting the sail, I head up a bit if ever I can, but the sheet forces don’t point that much downwards on a dead run, so I have found that I can haul up a panel or two in this position without having the sail tilting aft (much unlike on Johanna). Again, I think the aft-set position of the slingpoint has much to do with this.

    Arne

     

    Last modified: 01 Oct 2014 09:27 | Anonymous member (Administrator)
  • 01 Oct 2014 00:48
    Reply # 3112692 on 3103777

    I certainly don't qualify as "experienced" in handling the junk rig yet (it going to change soon) at only about 1500 miles and not more than 30-35kts max wind speed but so far I've done as David Tyler says and had little trouble. Yes the forward ends of the battens do hang up but I've been able to just go forward and pull them down. Downhauls would eliminate that. I've found getting sail back up to be more of an issue, requiring real grunt to get my main up when its full of wind. However I'll report back next year... I'll definitely have some experience then!

  • 01 Oct 2014 00:37
    Reply # 3112684 on 3103777
    Graham, I'm a pretty windy sailor and am not prepared to bring the wind on the beam unless the seas are pretty small.  I think part of your issue might be all those years of sailing bermudan rig: it gives you a tidy mind.  JR is often a bit untidy looking, but still works.

    The first thing, and I can't emphasise this too much, is too reef as soon as you think about it.  Junk rig is very powerful downwind and the habit formed from sailing other rigs, of thinking you need to hang on to the mainsail, is one that needs shaking off.  All your sail is working, don't forget.  Not just some of it.

    The second thing is, perhaps, not to hurry the process.  You are, after all, working from a sheltered position and have all the time in the world.  Ease down a bit of sail.  Haul in a bit of sheet.  Repeat the process and keep slacking and tightening the YHP, which helps shake them battens down.  From my own experience, alloy battens are a very mixed blessing and certainly are more reluctant to come down then wooden ones, due to their lack of mass.  Is your anti-chafe made of a slippery material?  That might make a difference.

    Gybing my low-aspect rig, has given me some grief, with the sheet wrapping around everything in sight (including me).  I'm in the process of fitting Arne's fan-up preventer and contemplating an arch.  But I honestly have to say that reefing, or shaking out reefs, hasn't been an issue.

  • 30 Sep 2014 23:03
    Reply # 3112632 on 3103777

    On Arion, I find the back end of the battens come down but the forward ends tend not to.  The fixed luff parrels (Paul Fay style) that I have on the lower three battens probably don't help.  Perhaps, as David says, they would shake down if I waited long enough.  Pulling on the downhauls (I have two, on the second and fourth battens up from the boom) might work though to date I have just rounded up briefly and let the sail shake down.  It is easier when the sail is to leeward of the mast, but I don't want to have to gybe to reef either.  I must point out that I don't have a great deal of experience with this rig, having only sailed about 2000 coastal miles, so I am most interested in hearing from people like David, Annie and Alan who have many blue-water miles under their belts.  PJR, however, does recommend rounding up to reef.  Their comment, "just about possible to reef downwind" if you use downhauls, has not encouraged me but I 'd be delighted to discover I was wrong (once again!).  If I could reef while running off in 4-5metre seas, without rounding up, I'd have to conclude that junk rig is the ultimate cruising rig, because it does everything else brilliantly.

    Last modified: 30 Sep 2014 23:05 | Anonymous member
  • 30 Sep 2014 21:11
    Reply # 3112526 on 3110455
    Graham Cox wrote:

    The consensus seems to be that for reefing downwind it is best to bring the wind onto the beam and feather the sail/s, if possible.  Alan on Zebedee told me once he usually does this.  It would be interesting to hear from David how he reefed Tystie's junk sail when running in big seas, as he has so often.  For times when it is impossible or dangerous to round up and lie beam on to the sea, PJR suggests that reefing on a run with the sail full of wind is "just about possible, although not easy, with good downhauls."  Batten and yard downhauls are recommended for this, though it is noted that for most cruising scenarios, this gear is not really necessary.  I have two downhauls fitted, on the second and fourth battens up from the boom.  They are a bit further aft than shown in PJR (40%) as I also use them as fan-up preventers.  I would also fit a yard downhaul if making long ocean voyages, even tradewind passages.  If you do reef without rounding up, PJR cautions that you must control the sheet carefully to stop the yard and battens getting forward of the mast (because, of course, the sheet goes slack as you lower the sail).

    Reefing a bermudian mainsail off the wind is not easy either, though my tendency was to reef or furl the main early and sail mostly on headsails, which were fitted with roller-furlers.  That makes reefing easy but if it is necessary to pole out headsails much of the advantage is lost.  As I have stated before, all rigs are compromises.  Reefing downwind is not one of junk rig's best features but this is outweighed by numerous other advantages.  I sometimes curse junk rig when running in a rising wind with developed seas, and even more so when the wind drops off and leaves you wallowing in a leftover sea, with the yard and battens crashing around and making the mast twang like a fishing rod with a big fish on it (normally my mast hardly flexes).  People talk about junk rig being a poor choice for windward work but I am happiest when the wind is forward of the beam!  The sail is so docile and easy to reef, it's time to bake cakes and dance in the cockpit.

    Speaking of which, I never leave the cockpit at sea these days except for recreational purposes and that is enough to make me love my rig despite my dislike of reefing it downwind.

    I've never had much difficulty taking the first few reefs in a junk sail when running downwind. I just ease the halyard and trim the hauling parrels and sheet. OK, so the battens don't drop so readily when deep reefs are taken with the sail full of wind, but they will usually drop when the yard hauling parrel is taken in, or after the boat's motion has shaken them to and fro a bit. Heavy battens will help, of course. This really is one of the good features of junk rig, and I'm left wondering why you find it problematic, Graham. I would certainly want to avoid rounding up to reef, when there is a sea running. I also routinely reef on a run when I need to slow down a bit to enter harbour. If it's blowing hard, I would certainly want to trim the sheet before easing the halyard, so that the sail does not go forward of the beam, which puts an unnecessary load on the battens as the sheet makes more of an acute angle to them.
  • 30 Sep 2014 13:34
    Reply # 3112182 on 3103777

    Turning beam on to drop sail does not sound very appealing and in some instances dangerous.  I would like to be able to drop sail on a dead-run.

    I had always assumed that an advantage of an un-stayed mast was being able to let the sail swing forward of the mast to let it drop, or just to spill wind. 

    What are the risks in doing so with a junk rig?

    many thanks

  • 26 Sep 2014 22:56
    Reply # 3110455 on 3103777

    The consensus seems to be that for reefing downwind it is best to bring the wind onto the beam and feather the sail/s, if possible.  Alan on Zebedee told me once he usually does this.  It would be interesting to hear from David how he reefed Tystie's junk sail when running in big seas, as he has so often.  For times when it is impossible or dangerous to round up and lie beam on to the sea, PJR suggests that reefing on a run with the sail full of wind is "just about possible, although not easy, with good downhauls."  Batten and yard downhauls are recommended for this, though it is noted that for most cruising scenarios, this gear is not really necessary.  I have two downhauls fitted, on the second and fourth battens up from the boom.  They are a bit further aft than shown in PJR (40%) as I also use them as fan-up preventers.  I would also fit a yard downhaul if making long ocean voyages, even tradewind passages.  If you do reef without rounding up, PJR cautions that you must control the sheet carefully to stop the yard and battens getting forward of the mast (because, of course, the sheet goes slack as you lower the sail).

    Reefing a bermudian mainsail off the wind is not easy either, though my tendency was to reef or furl the main early and sail mostly on headsails, which were fitted with roller-furlers.  That makes reefing easy but if it is necessary to pole out headsails much of the advantage is lost.  As I have stated before, all rigs are compromises.  Reefing downwind is not one of junk rig's best features but this is outweighed by numerous other advantages.  I sometimes curse junk rig when running in a rising wind with developed seas, and even more so when the wind drops off and leaves you wallowing in a leftover sea, with the yard and battens crashing around and making the mast twang like a fishing rod with a big fish on it (normally my mast hardly flexes).  People talk about junk rig being a poor choice for windward work but I am happiest when the wind is forward of the beam!  The sail is so docile and easy to reef, it's time to bake cakes and dance in the cockpit.

    Speaking of which, I never leave the cockpit at sea these days except for recreational purposes and that is enough to make me love my rig despite my dislike of reefing it downwind.

  • 22 Sep 2014 01:02
    Reply # 3104103 on 3103777
    I find it rather depends how much wind is in the sail.  As I generally sail off my anchor, I generally raise sail while running down wind.  Certainly for the first 3 or 4 panels it's not an issue.  Give it plenty of sheet and haul away.  In fact I often use my self-tailing winch because that way I can steer with one foot, while if I'm hauling by hand, it's more difficult to steer.

    When sailing, I usually bring the wind on the beam, slack off the sheets and raise sail.  To reef, again it depends how much wind there is in the sail.  If I've left it a bit late, then I bring the wind on to the beam.  Otherwise I find I can usually reef just by letting the halyard go like it says in the book.

    We all like getting the best out of our boats and enjoy them tearing along, and even after all these years and miles, I have to remind myself to reef early to avoid disappointment.  Yes, sometimes I do lose a bit of speed, but the boat is more controlled and everything becomes less stressful.

    I think the only time it can be really scary to bring the wind on to the beam, is when there is a dangerously big sea running, and you know you need to raise sail because the wind has taken off and the boat is struggling to make way.  However, in that situation, you are rarely talking about raising all the sail.  It can take a while, but you should be able to 'force' the sail up using a winch and carefully controlling the sheet.  The feeling of satisfaction when the boat starts to respond again is worth the effort.  By the time you are shaking out the lower half of the sail, the seas should have eased and it should be safe to bring the wind onto the beam.

    PS What do pointy boats do?

    Last modified: 23 Sep 2014 00:25 | Anonymous member
  • 21 Sep 2014 01:05
    Reply # 3103781 on 3103777
    Anonymous

    This thread started in the "JRA Magazine No66" thread I've deleted those entries and reposted them here where the members would expect to find it.

    Graham Cox wrote:

    I'd particularly like to read an article about reefing with the wind aft of the beam, perhaps a compilation article drawing on the experience of numerous contributors.  I'll even volunteer to compile it if people will send me their material!

    Ketil Greve:

    Graham,

    When I reef the sail on Marie G, I always point her to the Wind, let the sheet og, keep the tiller agaist the Wind. Take Down one panel, tighten the yard hauling line. Bring her back to the previous course, go forward to tighten up the luff and tame the exess sailcloth acting like an air brake, and thats it. Reefing running is for me defined as no-og aerea, just like gybing in a blow.

    Arne Kverneland: 

    Reefing and un-reefing with wind in the sail

    It seems that only small differences in the sail planform makes a lot of difference with respect to reefing.

    Both when reefing and un-reefing Johanna’s sail (AR=1.87, 5-part halyard), the rule was to do it with no wind in the sail (slack sheet). Only light forces in the sheet was enough to make the yard and battens droop and it was difficult to correct it.

    On the Oslo-dinghy Broremann (AR=2.15, single part halyard), I regularly hoisted and reefed with wind in the sail, no problem.

    Same with my present boat, the 6.5m Frøken Sørensen(AR=1.95, 3-part halyard). I did this several times this summer.

    My preliminary conclusion is that by moving the slingpoint of the halyard 3 – 5% aft of the midpoint, the yard is more likely to “peak up itself”. My hunch is that the lower the AR, the further aft the slingpoint should sit. Unfortunately, the mast on Johanna is on the short side, so the slingpoint cannot be moved far aft. Just as well with that big sail  -  it would be hard to hoist the sail with the sheets pulling anyway.

    Cheers, Arne

       " ...there is nothing - absolutely nothing - half so much worth doing as simply messing about in junk-rigged boats" 
                                                               - the Chinese Water Rat

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