Rival 21 from batavento sailmakers brazil

Discussion in 'Multihulls' started by Lucainbarca, Apr 20, 2019.

  1. Lucainbarca
    Joined: Apr 2019
    Posts: 10
    Likes: 2, Points: 3
    Location: Dominican republic

    Lucainbarca Junior Member

  2. Enter Miles
    Joined: Mar 2019
    Posts: 13
    Likes: 15, Points: 3
    Location: Rio de Janeiro

    Enter Miles Junior Member

    Thanks for posting the drawing. Seems like a capable design. Sergio knows his job. His BateVento line is quite successful.
     
  3. Lucainbarca
    Joined: Apr 2019
    Posts: 10
    Likes: 2, Points: 3
    Location: Dominican republic

    Lucainbarca Junior Member

    Finally I can work again on the boat !! As suggested by Gary Baigent, I manage to put down the weight of the first hull and built the second with the new specification. In this process of make it as light as possible a new question arise :
    The boat is designed with 3 aluminium beams, the third in the bow seems to be a small aluminium pipe.
    I saw a picture of this boat with a " second trampoline " on the bow but as my intention is to keep the bow empty (no trampoline or nets ) I start
    To think that the aluminium pipe is unnecessary.....
    Anybody can give me advise ?
    Thank you
     
  4. Zilver
    Joined: Nov 2007
    Posts: 77
    Likes: 7, Points: 8, Legacy Rep: 14
    Location: Amterdam the Netherlands

    Zilver Junior Member

    The bow tube is probably also designed as a compression strut, else the load of the forestay bridle will flex the hulls towards each other. The designer will know if its necessary or can be ommited. H
     
  5. Zilver
    Joined: Nov 2007
    Posts: 77
    Likes: 7, Points: 8, Legacy Rep: 14
    Location: Amterdam the Netherlands

    Zilver Junior Member

    PS Did you ask the designer about using mdf as hull material ? I still can not see how that can be strong enough for a boat hull (having no fibres, only dust and glue ?). from the pictures it seems that your bulkheads are made of plywood. I'm a bit puzzled.
    greetings, Hans
     

  6. Lucainbarca
    Joined: Apr 2019
    Posts: 10
    Likes: 2, Points: 3
    Location: Dominican republic

    Lucainbarca Junior Member

    I understand everybody opinion about mdf and me too I am worried.....we will see...hopefully I do not upset anybody. I have been using wood+plywood glued with epoxy. The mdf too is glued with epoxy but the hull is finished with polyester resin over mdf and some fiber renforcements.
    Mdf was my decision, email sended yesterday to the designer
    Thank you Hans
     
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