34th America's Cup: multihulls!

Discussion in 'Multihulls' started by Doug Lord, Sep 13, 2010.

  1. Silver Raven
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    Silver Raven Senior Member

    Gooday 'P-F' What a great post - thanks for adding so much of value to this discussion. I'm sure all of us appreciate it - I know I sure do.

    Just 'love' your last paragraph. Couldn't agree more. I also try to keep the 'PMA' idea going at all times - 'Positive Mental Attitude' - sure has worked for me. Thanks again - ciao, james
     
  2. Doug Lord
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    Doug Lord Flight Ready

    AC 45 on foils

    =========================
    Checked the final version of the rule posted on SA(and below).There is nothing in that version of the rule that prohibits pivoting of the daggerboard as long as it does not translate fore and aft at the lower bearing more than .02m(.78"). There is no reference to the lower bearing being fixed-just that it does not translate relative to the hull(it could pivot w/o translating). There have been foilers that used this exact method to avoid the complication of a flap. I'm more convinced than ever that this is the explanation of how they control the main foil angle of incidence. The board would not have to pivot much and could be designed to move easily even under load. But it would ,apparently, have to be done manually.

    Note:
    9.4 The lowest load transfering bearing shall not translate relative to the hull,
    9.5 A daggerboard shall not translate more than .02m(.78")in the bearing referred to in 9.4 above.
    There is a prohibition(9.9) against generating force for the pupose of increasing righting moment but the lee foil doesn't do that and the windward foil is retracted.
     

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  3. Doug Lord
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    Doug Lord Flight Ready

    34th AC

    From Scuttlebutt Europe today:

    ORACLE Team USA Spithill Strong on Day One in Newport


    Newport, Rhode Island, USA: It was a frenetic opening day of racing at the AC World Series in Newport, the sixth and final stop on the global international circuit. In glorious conditions on Thursday afternoon, the overall series leader, ORACLE TEAM USA's Jimmy Spithill, extended his lead, while his nearest rival, Dean Barker, saw his season championship hopes sink with a dramatic and unexpected capsize.

    Spithill had roaring start in the opening fleet race, powering off the starting line in light breezes to lead from start to finish, giving the American team top seeding in the match racing quarterfinals, which started immediately afterward. Pushed to the limit in the match racing, the team responded to advance to the semi finals.

    Conditions were tricky to start the day, with the forecast sea breeze not having filled in by race time at noon. But that didn't trouble Spithill, who extended a narrow lead at the first mark all the way around the race course. A big wind shift late in the race gave the chasing pack some hope, but Spithill held on for what was doubtlessly a satisfying birthday present for the 33 year-old skipper.

    Paired against Luna Rossa Piranha, Emirates Team New Zealand unexpectedly capsized in the building conditions. More dramatically, the Kiwis couldn't get their boat upright for nearly an hour, the wing filling with water. At one point, the boat was no longer on its side, but instead had its bows pointing straight up at the clear blue sky, as the boat drifted along in the current. Early indications are that the wing suffered damage in the incident, but the team expects to be racing on Friday.

    Friday's program has the one race Match Racing semi finals, followed by a single fleet race.
    Racing starts at 11:55 EDT Thursday and is live on: http://www.americascup.com/en/Events/2011-2012-world-series/Newport-USA/Schedule/Racing-Schedule/

    www.americascup.com
     
  4. Doug Lord
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    Doug Lord Flight Ready

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  5. tspeer
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    tspeer Senior Member

    No. A water ballast system was installed during testing, but it was removed before the regatta.
     
  6. Doug Lord
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    Doug Lord Flight Ready

    Last edited: Jul 17, 2012
  7. Stephen Ditmore
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    Stephen Ditmore Senior Member

    In light of this it's interesting that Oracle now employs former Alinghi engineer Dirk Kramers, while Paul Bieker seems to have been bumped.
     
  8. tspeer
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    tspeer Senior Member

    Just for the record, Paul has done work for America's Cup Event Authority, which should not be confused with Oracle Team USA. He's not been bumped. I think he has been there and done that, and now prefers not to get totally embroiled in the AC rat race.

    Likewise, Morelli and Melvin worked for ACEA to develop the class rule for the AC72 before they got involved with the ETNZ campaign.
     
  9. Stephen Ditmore
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    Stephen Ditmore Senior Member

    Ah, glad to hear it. I do still wonder whether Dirk Kramers was picked up specifically to fill Paul's shoes. Anyway, I'm excited to see what you and all the teams come up with.
     
  10. Doug Lord
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    Doug Lord Flight Ready

    34th AC-- heads up!

    From Scuttlebutt tonight:

    * The second season of the America's Cup World Series kicks off next month
    in San Francisco when 11 AC45s compete for the first time at the venue for
    the 34th America's Cup. This event will mark the first time Artemis Racing
    fields two teams, and it will be the debut for Ben Ainslie Racing.
    Competition is planned for August 22-26. See schedule here:
    http://tinyurl.com/ACUP-071712
     
  11. Gary Baigent
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    Gary Baigent Senior Member

    Just seen the monster AC72 and its monstrous wing ... but as it happened, only took my old Canon rangefinder film camera along ... so you'll have to wait half an hour before I post the digital images.
    Anyway, as a taste, looks magnificent.
     
  12. Doug Lord
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    Doug Lord Flight Ready

    =======================
    Geez, you really know how to hurt an AC freak! Pictures Now! Does it use foils for vert. lift? "L" foils on the rudders? (please!)
     
  13. Gary Baigent
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    Gary Baigent Senior Member

    Won't be long Doug. Actually I'd had a meeting again with the harbourmaster about our moorings in Motions Creek (and the power of wealth over us poor sailing boys - the give and take is 95% take on their side, we shift) ... and anyway I just dropped the old Canon in my bag just in case something was happening at Viaduct on my way back ... and there the monster was. I climbed up the corner of the wall and covered gate to get the best shots (I hope). But there are some blurry shots already on Sailing Anarchy ... but mine will be sharper.
    Didn't see any lifting foils, Doug, because I had to be quick, but will check closely when the disc comes back.
     
  14. Doug Lord
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    Doug Lord Flight Ready

    34th AC

    ==================
    Thanks, Gary. I wouldn't want you to think I was impatient or anything. Nah, not me-I'm so patient I can hardly stand it.....
     

  15. Corley
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    Corley epoxy coated

    Beautifully finished boat, here are some photos from the Emirates/Team New Zealand website.
     

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