Boat project 14ft catamaran flats

Discussion in 'Boat Design' started by EirikNorway, Jun 2, 2012.

  1. EirikNorway
    Joined: May 2012
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    Location: Norway, Oslo

    EirikNorway Junior Member

    surwiviwing one self

    Hi i going to post a video of the useability. I guess it need some tweeking. Lets hope im not going to die trying. Annyway you called it. Eirik
     
  2. EirikNorway
    Joined: May 2012
    Posts: 25
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    Location: Norway, Oslo

    EirikNorway Junior Member

  3. oldsailor7
    Joined: May 2008
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    Location: Sydney Australia

    oldsailor7 Senior Member

    Thats some "Selfie" Eirik. Shows you are not averse to danger.
    Please don't overpower your boat. :eek:
     
  4. EirikNorway
    Joined: May 2012
    Posts: 25
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    Location: Norway, Oslo

    EirikNorway Junior Member

  5. EirikNorway
    Joined: May 2012
    Posts: 25
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    Location: Norway, Oslo

    EirikNorway Junior Member

    First test in water

    First test with 20hp yamaha 1986
    The boat ran better with two persons than just one. There was less porpoising with to persons. It pretty low, but that is as cool as impractical. Leaning towards keeping it low. I know im going to get it, so just give it to me. : )

    Video: https://www.youtube.com/watch?v=hfqb4p9uSmY&feature=youtu.be

    Eirik
     
  6. messabout
    Joined: Jan 2006
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    Location: Lakeland Fl USA

    messabout Senior Member

    The trim angle on the outboard is key to reducing the porpoising. Let the lower unit/propeller move forward a notch or two. If you already have it at the lowest position, then you may have to make a wedge shaped addition to the transom so that you can trim the nose down.

    Normal transom angle is about 14 degrees which works out to about a one to four ratio. In this case, a little bit more angle may be appropriate. Experiment with the boat and you will be able to make it ride reasonably level.
     

  7. EirikNorway
    Joined: May 2012
    Posts: 25
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    Location: Norway, Oslo

    EirikNorway Junior Member

    Nearing completion

    We are nearing completion.
    Need to ad keel protector, buildt in gastank, and hinges fittings.
    It has room for 3 persons, rather more suited for two.
    Going to use it this summer, try to go on some fishing trips, rivers lakes etc.

    Pictures of final part of build:
    https://www.flickr.com/photos/7682263@N02/albums/72157663907697395

    Eirik
     
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