Rapido 40, 50 Folding system

Discussion in 'Multihulls' started by patrik111, Nov 8, 2019.

  1. patrik111
    Joined: Sep 2003
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    Location: Sweden

    patrik111 Junior Member

    Hello,

    Very intrigued by the folding systems shown for the new M&M Rapido 40 & 50



    How does that work?
    Locking in place for sailing and for folded, joint low down in ama and... But how does is look?


    Let the speculations begin!
    Please bring pictures
     
  2. upchurchmr
    Joined: Feb 2011
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    upchurchmr Senior Member

    This is just Ferrier's patented system from 30 years ago.
    Nothing wrong with it, but nothing new either, from the very minimal information provided.

    The patent has expired, btw. So this is legal.
     
  3. patrik111
    Joined: Sep 2003
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    patrik111 Junior Member

    Most of it does absolutely consist of Farrier geometry, but the amas are articulated vs the beams, meaning in folded position, they are still in an relatively upright position. How that is achieved is what is keeping me awake.
     
  4. John Perry
    Joined: Nov 2003
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    John Perry Senior Member

    I recall that some years back Ian Farrier in one of his writings on the internet said that he had considered a mechanism like this that includes extra pivots and links to keep the floats upright during folding and I think, but cannot be sure, that he said that he had taken out a patent for it. He then went on to say that he did not think the extra complication would be worth the benefit for most owners so he had not taken the idea further.

    I would think that this arrangement would be more worthwhile on a larger boat than most of those designed by Ian. Ian's boats are mostly designed to be road trailerable, so the folding mechanism is mainly intended to facilitate that. Unlike the Dragonfly system, the Farrier system is not ideal for frequent folding for marina berths. For boats much over 10m road trailing becomes irrelevant and the greater width perhaps leads to a greater need to fold in marinas.
    John
     
  5. bruceb
    Joined: Nov 2008
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    bruceb Senior Member

    It looks as if the tips of the beams go all the way to the bottom of the floats, below their center of flotation so most of the load is just vertical. Probably a simple pin on the float deck or a fitted insert in the slot would keep them in place. I drew something similar a few years ago for my Buc 33 but I did not think I was capable of building it. I hope M& M can make it work correctly, tri's need some fresh folding ideas and since Farrier's patents have mostly expired it is a wide open field again.
    B
     
  6. Tony.Ellen
    Joined: Nov 2019
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    Tony.Ellen New Member

    The Patent as mentioned above
     

    Attached Files:


  7. bruceb
    Joined: Nov 2008
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    Location: atlanta,ga

    bruceb Senior Member

    That is interesting, the patent shows somewhat different geometry than the video. I have to wonder how defensible the patent would be. Watch where the beams intersect the deck.
    M&M are very experienced designers but most multi folding systems are based on very generic mechanical principals, (Like front end loaders and many other machines) so defending them in a patent dispute might not go so well. Whom ever brings the best legal fire power would probably prevail. In the past, the market was not worth the investment but that might be changing. As a former boat dealer, I have long felt that Ferrier's patents stifled multihull development for 20 years, and I hope new ideas are not restricted to one company.
    B
     
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