justcrazy ideea

Discussion in 'Boat Design' started by justcrazy, Nov 24, 2003.

  1. justcrazy
    Joined: Oct 2003
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    Location: romania

    justcrazy Junior Member

    :) hi i am a student at the arts and design scool in romania and i have these problem with a project. The theme is a speed, fluvial, civil, catamaran design; my ideea is that i want to make the design with the propulsion engine in the midle side of the boat, between the two floats while the directioning is in the back side of the boat. The boat has five meeters long. I believe that this sistem is more reliable and easier to handle especialee in the turning procedure. On the other side i am obtainig with these design the horizontal position of deplasation.:confused: :confused: 10
     
    justcrazy, Nov 24, 2003
    #1
  2. Stephen Ditmore
    Joined: Jun 2001
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    Location: South Deerfield, MA, USA

    Stephen Ditmore Senior Member

    I follow most of what you've written, but I'm not clear what your question is.
     
    Stephen Ditmore, Nov 30, 2003
    #2
  3. justcrazy
    Joined: Oct 2003
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    Location: romania

    justcrazy Junior Member

    Well the ideea is that i want to open a discution about the sistem written before. I want to know what are the weak points of these ideea and what are the strong ones, if there are any more, but i am more interested to be criticised.
     
    justcrazy, Dec 3, 2003
    #3
  4. Raven Dorr
    Joined: Dec 2003
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    Location: Corvallis, Oregon

    Raven Dorr New Member

    system
     
    Raven Dorr, Dec 17, 2003
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  5. Bill the Cat
    Joined: Oct 2002
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    Location: West Florida

    Bill the Cat Junior Member

    I have designed and built a 5m (16ft.) catamaran with the engine in the position you describe (I think).

    Propulsion problems:

    1. The water between the hulls is not as "clean" as you would expect - if you are using a standard outboard with an unmodified cavitation plate you get ventilation even when your plate is below water level by 2.5cm (1inch). The fix is attaching a hydrofoil.

    2. Turning is flat, that is very little pitch - that is not a real problem because it is very easy on the passangers . But you cannot turn as sharply as a standard hull with a tiller outboard.

    Other than those two problems - I haven't had any others. You can visit my website: www.davesflatcat.com

    [​IMG]

    [​IMG]
     
    Bill the Cat, Dec 19, 2003
    #5

  7. justcrazy
    Joined: Oct 2003
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    Location: romania

    justcrazy Junior Member

    Firsth I want to thank you for the answer your help is very important to me. I was thinking also in these project to have the deck separated from the floats and between them a suspension sistem. I believe that in these way a fluvial catamaran will have a more smoothlee way of working when speeding with a less impact from the riples.Also in these scheme I want to present you the exact positioning of the propulsion and the directioning of the project.
     

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    justcrazy, Jan 14, 2004
    #6
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