Redwing

  • 13 Sep 2015 21:00
    Reply # 3524771 on 644008

    Any indication Gary of a possible cause? It looked to be a fairly gentle day weather-wise so I guess it came as quite a shock when the break occurred. Annie's comments about loads on these camber panel sails are very true. I need to use a winch on the luff hauling parrel on Footprints to get the creases out of the sail. I have already bend the alloy yard I had and am now back to my old timber yard, but I wonder if it is a bit of a time bomb, just waiting to break. I really do need to investigate a carbon yard for Footprints.

  • 13 Sep 2015 20:46
    Reply # 3524761 on 644008
    Sorry to hear about that, Gary.  It does rather spoil your day :-(.


    Zebedee sailed happily round the world with Douglas Fir yards, but snapped one and (I think) cracked the other since fitting the cambered sails.  I think, personally, the loadings on the running luff hauling parrels or yard downhaul, required to pull the creases out of the sail are counter to the generally light loads that are part of junk rig.  I bent my yard on Fantail (but there was probably an inherent weakness in its construction), replaced it with a douglas fir one and have been very happy with it since. 


    I also spent quite a lot of time fiddling with my luff hauling parrel(s) until I ended up with just one, passing once around the mast.  I also have one crease that's nearly impossible to remove half way up the sail and one in the lower panel, which I could get rid of by letting the boom go further forward; as I don't want to do that I live with it.  I have chosen lighter loads and an imperfectly set sail. 


    On SibLim, I am going for a fairly high aspect sail, not dissimilar to what Paul put on La Chica, to reduce the loads (and the lines) required to make the sail set properly.
  • 13 Sep 2015 13:10
    Reply # 3524199 on 644008
    Anonymous member (Administrator)

    Woops, sounds exciting!

    I guess we have to make the yards of our cambered panel sails a bit stronger in the vertical plane than when using flat sails. This is because most of the vertical loads have moved out to the luff and leech.

    Here is my “yard experience”:
    Soon after I had rigged my Johanna with the braced aluminium yard (the first yard, of fir, was way too heavy), we took her out in a strong breeze. We deliberately pressed her downwind with too much sail up. Then an inferior weld, holding the brace to the yard, snapped. What then happened was that the yard bent about 20°  at the slingpoint. This flattened the top panel which then took over the role as yard. Thanks to the strong fabric, this top panel prevented any problems further down the sail. We were in other words still operational and could limp home (well reefed). The yard was straightened (more or less) and rewelded, and is still in use, 12 years later.

    The aluminium’s ability to bend before breaking makes me think that it is particularly well suited for yards.

    Cheers, Arne


    Here Johanna's - almost straight  -  braced yard can be seen. Click on it to zoom in...
    (Photo: Peter Manning)

     

     

    Last modified: 13 Sep 2015 15:08 | Anonymous member (Administrator)
  • 13 Sep 2015 11:50
    Reply # 3524170 on 644008

    Little bit of drama today...the yard snapped in two. It was a bit of surprise as we were just romping along having a top sail.

  • 31 Aug 2015 03:44
    Reply # 3502639 on 644008

    It's a bit raw and shaky but I like it.

    http://youtu.be/8r_7eLouUPI


    Last modified: 13 Sep 2015 08:40 | Anonymous member
  • 30 Aug 2015 22:18
    Reply # 3502467 on 644008
    I have to say it's great sailing with someone who has good experience with JR sailing. David and I finally sailed around Cook Island yesterday. Something I've been wanting to do since I launched the boat. A perfect day.
  • 17 Aug 2015 22:30
    Reply # 3484987 on 644008
    Thanks Graham, I look forward to January. I need to do something about getting the main sheet out of the cockpit I nearly lost David over the side when he got clipped by it.
  • 16 Aug 2015 22:59
    Reply # 3482456 on 644008

    Congratulations of dipping Redwing's stem into the broad Pacific Ocean. It is only 4500 miles to Tahiti!  I am planning to sail out from Broken Bay to Lord Howe Island in December, then on to Moreton Bay next January, so I hope we get to meet up and have a little junket together.

  • 16 Aug 2015 21:54
    Reply # 3482408 on 644008
    Redwing goes sailing on the briny. https://youtu.be/9QqPV1nA6uA
  • 07 Jul 2015 00:23
    Reply # 3423806 on 3419593
    Deleted user
    Gary Pick wrote:

    By rights we should be on board right now and ready to set sail tomorrow but sadly yesterday the car broke down. Really really not impressed.

    Car is jealous of boat. :o
       " ...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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