Question on Tornado hull side plan

Discussion in 'Multihulls' started by mystrwizard, Oct 5, 2016.

  1. patzefran
    Joined: Feb 2011
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    Location: france

    patzefran patzefran

    Hi Tom
    I plan to change my Strike 20 outriggers only to decrease the weight of the boat.
    Nacra 5.8 are perfect shape but too heavy !
    I plan to build ply , self designed hard chine outriggers. The reason is they are easier to design, and you can design more volume than tortured ply.
    Cheers

    Patrick
     
  2. upchurchmr
    Joined: Feb 2011
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    Location: Ft. Worth, Tx, USA

    upchurchmr Senior Member

    You can get better volume and smoother lines with a strip planked construction.
    Could be lighter weight also.
    :D

    Actually I once calculated a 2000# displacement for one hull for the Tornado. That ought to be enough for most any open trimaran.
     
  3. mystrwizard
    Joined: Oct 2009
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    Location: SoCal

    mystrwizard Junior Member

    Patrick, with all these outriggers using donor or building your own for the Strike 20, where is the dagger-board or centerboard you are using? do you use any in the outriggers or just one in the center hull?

    Reese
     
  4. patzefran
    Joined: Feb 2011
    Posts: 328
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    Location: france

    patzefran patzefran

    I closed the daggerboard trunks in Nacra outrigger, but I have found it is better to have the rudders on outriggers. Indeed with central rudder we ventilate/ lose control when lifting the mainhull.
    About strip planking, I agree, but it is too much work for my taste !

    Patrick
     

  5. teamvmg
    Joined: May 2008
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    Location: christchurch,uk

    teamvmg Senior Member

    Tornados were but within tolerances. Through the years they went from small hulls...... to fat at the front...... and fat in the middle......

    Not sure where the Mastrom ones ended up
     
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