Rudder lift on Boardless Catamarans?

Discussion in 'Multihulls' started by Paul Scott, Apr 12, 2023.

  1. Paul Scott
    Joined: Sep 2004
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    Paul Scott Senior Member

    80F79F82-33DF-41CF-98D5-6B1D0C6728C4.png 77E495C1-FE89-49C6-A2B4-159D3F3353D4.jpeg

    How much?

    For example, Dart 16, Dart 18, Hobie 16
     

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  2. MalSmith
    Joined: May 2004
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    Location: Australia

    MalSmith Ignorant boat designer

    How much depends on how far aft the rig is. Over the years, Hobie 16's have raked their rigs further aft to increase the loading on the more efficient high aspect ratio rudder, as opposed to the relatively shallow hull. However, I'm sure you could reach a point where the rig was so far aft, that you would get stuck in irons every time you tacked. ;)
     
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  3. patzefran
    Joined: Feb 2011
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    Location: france

    patzefran patzefran

    Not much on the Dart 18, as you can't adjust rudder's rake to balance the helm
     
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