The secret of Tornado

Discussion in 'Sailboats' started by Ivan Adamis, Sep 2, 2011.

  1. Doug Lord
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    Doug Lord Flight Ready

    How will you increase righting moment?
     
  2. marcantoine22
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    marcantoine22 New Member

    With 3 trapezes and maybe somes medium wings.
     
  3. BobBill
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    Location: Minnesotan wakes up daily, in SE MN, a good start,

    BobBill Senior Member

    A more basic question is if you are planning a conventional sort of rig or a foiled rig? Then there is the sail plan itself...fractional, cat, etc. Stayed, unstayed rig...

    I do not know much about Tornado hull, like if they can take the stresses etc. Too, some Tornado hulls are wood, some are glass.

    I must defer the many more knowledgeable follows who attend these threads.

    I also note a below reference to Tornado construction...

    I might be prejudiced a bit toward outriggers (or "tacking proas") even with limited knowledge and current active experience!
     
  4. marcantoine22
    Joined: Mar 2018
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    Location: Canada

    marcantoine22 New Member

    I was thinking of a non-foiling rig and the stayed mast would be 10,34m long. To know if the tornado's hull can take the stress, I thinks that there's alwayls a way to make them stronger, like make new ones with specific reinforcement if it's necessary. But the main question I'm wondering is if the Tornado's hulls can go significantly faster with a bigger rig on it. I mean, there is probably a maximum speed a hull can go but I can't find some infos about cata hulls or even planning hulls. The best would be to know to point where adding sails make a very little difference in boat speed to maximise the sail area/speed. Thanks you a lot
     
  5. BobBill
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    Location: Minnesotan wakes up daily, in SE MN, a good start,

    BobBill Senior Member

    I am not qualified to respond, but you are in the right place. This place is inhabited by some very qualified swabs who are willing to help. I built an outrigger using doomed hulls and Malibu Outrigger plans and these fellows saved me from disaster. I only came here when I ran into a brick wall, but there are lots of factors that can be taken for granted and wrong. For example, a hull that would fail under pressures of a non-stayed rig.

    I could list the names, but there are many. You will quickly figure out the pros.

    When I began the project I stuck to it, unless I had to change or had to redo a messed up something. I am a "traditional" sailor. I eschew hard-hat hot shot sailing. Simple is best to me, so I stick with it...it is also less expensive in so many ways.

    Bon Chance! I hope to watch and learn also. Warm weather brings anticipation here.
     
  6. Doug Lord
    Joined: May 2009
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    Location: Cocoa, Florida

    Doug Lord Flight Ready

    ========================
    When you could get as much as a 20% speed increase in some conditions with well designed lifting foils and the existing rig, why mess with very expensive solutions to make the boat faster seahugging?
     
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  7. BobBill
    Joined: Oct 2009
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    Location: Minnesotan wakes up daily, in SE MN, a good start,

    BobBill Senior Member

    Two reasons: Preference; simplicity!
     
  8. Doug Lord
    Joined: May 2009
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    Doug Lord Flight Ready

    Preference is fine. But adding lots of sail area , a new mast, "medium wings" and maybe new hulls is not "simple" compared to adding hydrofoils........
    PS- the weight of the third crew would seem like a big detriment to a platform designed for two crew?
     
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  9. rwatson
    Joined: Aug 2007
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    rwatson Senior Member

    Dougs comments hit on the whole basis of this program.

    If you are looking just to innovate, to develop new approaches, re-developing an old hull design is a dead end approach.

    With foils, and modern materials, the whole "fast yacht" thing has moved forward 20 years, and trying to do something with an old design wont do anything useful.

    You wont be able to compete in one class races
    You wont get anywhere near competitive to modern designs.

    A modern design A class CAT makes tornadoes look like old women.

    I really can't see what useful thing you are going to achieve mucking around with such an old design.

    wingfox.jpg
     
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