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Roger Taylor and 'Mingming II'

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  • 20 Oct 2013 18:19
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    Reply # 1417301 on 1172714
    Anonymous member
    My only misgiving is that leakage from the high pressure side to the low pressure side of the sail is not a good thing, but the proof of the pudding is in the eating, and apparently Mingming II is sailing fast and well.

    The camber shape achieved will be similar to that obtained by other methods. The gain would appear to be the ability to make the sail in separate sections and the ability to take a panel out for repair or alteration. Roger has made the sail so strongly that I doubt whether repair will be necessary, and I would guess that an alteration would take just as long as if the sail were made using either of the "amateur" methods of joining panels, with the seam standing proud on one side or the other of the sail, and with no need to pass the rolled panel beneath the machine. These methods also make it possible to make a sail in a smaller space than is needed if the whole sail is to be laid out on the floor.
  • 20 Oct 2013 17:34
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    Reply # 1417249 on 1172714
    Deleted user
    Thanks for that link, Oscar. I can't answer about airflow but am glad to see someone experimenting with separate panels.

    Chris Scanes built Paradox's sail with separate panels with bolt ropes top and bottom which slide into tracks on the spars. Works well, but members have pointed out the potential difficulty of removing a panel: easy enough in port, but would be tricky at sea, though we still have the option of reefing damaged panels out.

    Looks as if Roger could easily remove a panel or a batten at sea and we both have the option of joining the panels together.
  • 20 Oct 2013 17:02
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    Reply # 1417231 on 1404584
    Anonymous member
    Karlis Kalnins wrote:
    I'm loving his "3H" (horizontal hinge) cambered panel technique, very inventive. What does Slieve think of the separate panels for aerodynamic efficiency? Does having a complete panel batten wall channel air better, or does it matter? 

    Does anyone have any input on this? My non-educated guess would be that the airflow is disturbed by the wide gaps between the panels.

    Link to video
  • 04 Oct 2013 05:52
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    Reply # 1404584 on 1172714
    Anonymous member
    I just watched the videos on MingMing2 under construction. It sounded to me like his mast had a thicker wall diameter at the top (5mm) than the rest of the tube (3mm). That would partly explain why he chose to shorten the tube by chopping the bottom only, so he has a thicker tube wall to attach his masthead fitting.

    I'm loving his "3H" (horizontal hinge) cambered panel technique, very inventive. What does Slieve think of the separate panels for aerodynamic efficiency? Does having a complete panel batten wall channel air better, or does it matter? 
  • 02 Oct 2013 12:49
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    Reply # 1403012 on 1172714
    Deleted user
    [Webmaster edit: Colin Jarman posted the following in another thread. Thanks, Colin. I've retained that thread as it discusses his new rig and has links to his videos.]

    I didn't know which forum to choose for this, but I promised in another thread to let you know more about the progress of Roger Taylor and Mingming II. We have now published Part 2 of his article about her creation on the East Coast Sailing website here: http://www.eastcoastsailing.co.uk

    I was privileged to spend a day last week sailing MMII  with Roger on her early sea trials and can report that she sails like a dream - fast, handy and very manageable. He's clearly got his sums right and it looks as though the boat should be all that he hoped.

    [And Oscar Froeberg wrote this. Thanks Oscar. The pdf is also downloadable from our New Articles box on the member's home page.]

    Direct link to article (PDF): http://www.eastcoastsailing.co.uk/MakingMingmingPt2-web.pdf
    Last modified: 02 Oct 2013 21:11 | Deleted user
  • 22 Sep 2013 19:10
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    Reply # 1395593 on 1172714
    Anonymous member
    Thanks, Chris, will take a look.
  • 22 Sep 2013 15:01
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    Reply # 1395498 on 1172714
    Deleted user
    Roy
    On youtube, here.

    http://www.youtube.com/watch?v=BqoxLTJUfMM
  • 22 Sep 2013 11:11
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    Reply # 1395394 on 1172714
    Anonymous member

    I have not been able to find the trial sail video - is it on his website, at the link in my post of August 4th above?
  • 18 Sep 2013 16:40
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    Reply # 1392395 on 1172714
    Anonymous member
    Some videos of sea trials are now up too, showing the sail shape and some promising results.

    "The tacking angle that she's getting on the compass -- I don't believe it -- it's saying something like 60-65 degrees, but I think that's just the wind shifting around a little bit." ... "My god that is 60 degrees again.  I don't really believe that, but we shall see."

    She does look very nice in the water.
  • 05 Aug 2013 09:36
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    Reply # 1358512 on 1172714
    Anonymous member
    Part 6 of his video updates shows some interesting developments he has made in his sail design, with a novel means of introducing camber and the use of separate lower panels.  I would be interested to read comments from the more experienced members on this.
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