Formula catamaran hull shape

Discussion in 'Multihulls' started by steve.b, Aug 13, 2008.

  1. steve.b
    Joined: May 2008
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    Location: Cape Town, SA

    steve.b Junior Member

    Hi

    In the process of designing a Formula 16 type catamaran.
    What sort of Cp values should i be aiming for and where should the LCB be?

    thanks
     
  2. waynemarlow
    Joined: Nov 2006
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    Location: UK

    waynemarlow Senior Member

    Steve tried to send a P message to you Ref the F16 design but are unable, check your profile.

    Thanks
     
  3. steve.b
    Joined: May 2008
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    Location: Cape Town, SA

    steve.b Junior Member

    hi

    thanks for trying, i cant receive PM's yet as i haven't posted enough on the forums.

    It should be working now though

    thanks
     
  4. steve.b
    Joined: May 2008
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    steve.b Junior Member

    hmmm, still not working..

    (i need to make a couple more posts)

    i am designing the boat in maxsurf, but only designing one hull as i want them to be symmetrical. is there an easier way to get 2 hulls in maxsurf (but keep them symmetrical)?
     
  5. steve.b
    Joined: May 2008
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    Location: Cape Town, SA

    steve.b Junior Member

    if PM still isnt working, you can drop me an email on:

    steve(at)l26racing.com

    (obviously replace (at) with @, done for spam reasons....)

    thanks again
     
  6. CTMD
    Joined: Dec 2007
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    Location: Melbourne, Aus

    CTMD Naval Architect

    to make a symmetrical cat in maxsurf.

    1. Model half the hull.
    2. Flip-Copy the hull around the centre line
    3. Move the two surfaces out to the new hull CL

    For the LCB do a quick weight estimate. There is quite a bit of data over at catsailor on mast weights etc. and then put the LCB in the right place.

    Prismatic is a secret and will vary based upon design principles. The DS16 is approx .55 when flying a hull.
     
  7. steve.b
    Joined: May 2008
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    Location: Cape Town, SA

    steve.b Junior Member

    Great, that has got me in the right direction.

    thanks
     

  8. CTMD
    Joined: Dec 2007
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    Location: Melbourne, Aus

    CTMD Naval Architect

    Steve,

    I should point out the DS16 is optimised for sailing one up. So your numbers will probably vary.
     
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