TP52s

Discussion in 'Sailboats' started by mighetto, Nov 1, 2004.

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  1. Shife
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    Shife Anarchist

    Schock 40s race PHRF all the time, so where are you getting the idea that a canting keel boat can't race PHRF?

    BTW...Stacking gear to alter righting moment during a race will not come close to the effect that a canting keel has, and is illegal under most handicap rules, but don't let that get in the way of the complete B.S. you keep writing.
     
  2. Mark 42
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    Mark 42 Senior Member

    So, how many races have you entered? Crewed in? Actually finished? Receiveved Trophies?
    What other crowning achievements can you offer as evidence of progress?
    :p

    http://www.boatdesign.net/forums/showpost.php?p=61513&postcount=587

    You want movable ballast?
    Reduce keel weight and carry more crew members.
    (Though PHRF may limit crew size... children don't count, so feed your kids!)

    But if you want to get away from traditional lead fixed keels, why
    are you sailing a monohull at all?
     
  3. RHough
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    RHough Retro Dude

    We can only imagine the starting point if where you are now is progress ... :D
     
  4. Mark 42
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    Mark 42 Senior Member

    I think of a linear cyclic motion...
     
  5. SailDesign
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    SailDesign Old Phart! Stay upwind..

    Mark,
    Get your mind out of the gutter
    Steve
     
  6. Mark 42
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    Mark 42 Senior Member

    I was thinking about pulling the starter cord on that
    big 'ol outboard motor when the batteries are dead! :p
     
  7. SailDesign
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    SailDesign Old Phart! Stay upwind..

    Yeah - riiiighttttt......... :)
     
  8. frankofile
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    frankofile Junior Member

  9. Mark 42
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    Mark 42 Senior Member

  10. Shife
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    Shife Anarchist

    Amazing. The similarities become glaringly obvious after a few drinks.
     
  11. Mark 42
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    Mark 42 Senior Member

    I think it's the skippers' silly hats.
    (you know... sorta the opposite of a thinking cap)
     
  12. sailsmall
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    sailsmall Senior Member

  13. mighetto
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    mighetto New Member


    The tide has indead turned. Thats Tide 28 if you want. Lets review:

    I believe from reading Hobart transcripts that boats with a stability index of 110 are grandfathered but that new Hobart boats require 115.

    A boat with 110 stability can not be knocked down by wind alone. However, all vessels can capsize in sufficient sea conditions. In 2004, an attempt to require a mathematically computed 128 limit of stability in ocean racing designs was orchestrated by those with vested interests in TP52s. In a stunning defeat, the grand prix (GP) Rule Working Party (RWP) rejected mathematically derived stability requirements.

    The GP RWP did this to support movable ballast designs. Today stability tests for off shore monohulls are performed, not by mathematics, but in test pools where the sailboat must be righted after a capsize simulation. Overnight the TP52s were made obsolete because they adhere to 128 and higher mathematically derived stability ratios. They do this with keel attached weight. Weight that makes them slow when there isn't enough wind to carry them to hull speed.

    In a mater of months after the GP RWP decision, Mac26x production in Australia began by a company known for its Sydney Hobart work, and a new British powersailer was launched.

    That British powersailer used the engine as a significant portion of her ballast and is called the Tide 28. The manufacturers went through the hastle of trying to get the boat rated category A, not an unreasonable thing given that the boat has positive flotation and hence serves as it own life boat, but eventually settled with category B. Today the youngest sailor to cross an ocean did so in a British powersailer Tide 28. The tide has indeed turned.

    The British powersailer was followed by a Swedish one, the Oden 720, to complement the German Oden 820. I believe TP52 supporters deliberately disparaged movable ballasted vessels of any kind. The Tide 28 uses a centerplank. Water ballast in concert with weighted and unweghted foils will be the new order. The external weighted fixed keel erra is over. The 100 year old experement in fixed weighted foils will soon be. The perceptions of the Mac26x and her cousens in the sailboat ocean racing community are becoming more and more favorable owing to the GP RWP rejection of TP52 design notions. We need to move on and start designing real sailboats for modern times, which not surprisingly are going to look more like the sailboats at the end of the commercial age of sail. Smaller and eventually no dangling testicles.

    Frank L. Mighetto
    South Sound Sailing Society
     
  14. member 10795
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    member 10795 Sensei

    Why do I get a feeling that his wife must be out of town so he didn't take his meds?
     

  15. mholguin
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    mholguin Junior Member

    I was loosing my faith on this thread... Thanks FM for keeping it a live...


    RUN! RUN Frank RUN!!
     
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