A Class build 2014

Discussion in 'Materials' started by CCYC, Feb 2, 2014.

  1. CCYC
    Joined: Feb 2014
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    Location: Midwest

    CCYC New Member

    Greetings all,

    I am planning on building an A class catamaran. I will be using the technique as the Lindahl |Roake builds. http://lindahlcompositedesign.weebly.com/lr5-build.html

    Coming up with some prelim numbers & sources for materials. I am located in southern Indiana. Any help would be appreciated.

    Christopher
     

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  2. gonzo
    Joined: Aug 2002
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    gonzo Senior Member

    Good luck with the project. When you calculate the weight, there should be fairing compound and paint included. They are a considerable percentage.
     
  3. CCYC
    Joined: Feb 2014
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    CCYC New Member

    Percentage estimate

    What would be your percentage estimate for paint & fairing compound? Of course, hoping I don't need too much to fill the weave of the veil.

    Christopher
     
  4. gonzo
    Joined: Aug 2002
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    gonzo Senior Member

    Polyurethane paint weights at about 10-12 lb/gal. The fairing compounds vary a lot. However, the amount you use is very dependent on the finish of the hull. A very fair hull may only need a skim coat, while a poorly built one may have 1/2" of filler in places.
     
  5. DCockey
    Joined: Oct 2009
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    DCockey Senior Member

    Contact John Lindahl in Fennville, Michigan and ask him. I've talked to him several times at the Quiet Water Symposium and he was very open with information about how he builds his boats, their weights, etc. Contact information is available in the link in your first post.
     
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  6. CCYC
    Joined: Feb 2014
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    CCYC New Member

    thoughts on other vendors

    Are there any better vendors to use than what I am thinking of?

    Cost savings? I am willing to drive to pick up foam; if that saves anything.

    Christopher
     
  7. CCYC
    Joined: Feb 2014
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    CCYC New Member

    Corecell M80

    Where have you purchased Corecell M80? Which vendor did you purchase from?

    Also, anyone use an epoxy mixing machine and if so which one is worth the money? Proset uses a 3:1 ratio.

    Christopher
     
  8. Baltic Bandit

    Baltic Bandit Previous Member

    You might want to drop in on the discussion on Sailing Anarchy. Most of the A-Class sailors are there. There have been some major changes at this point coming out of the worlds. in particular the ruling on Landy's Casette within a Cassettte as being legal.

    this allows the Dagger board to be inserted into a "box" (cassette) that is basically the width of the hull minus the two skinned surfaces - and then the box and DB combined to be inserted into the hull.

    What this allows is for the DB to be limited in its curvature only by
    a) the 750mm rule (ie no further inboard than 750mm from the inside edge of the hull)
    b) the curvature that can fit through a box the size of the hull at its widest point.

    effectively this allows "J" boards that can be used for heave controlled foiling.
     
  9. DCockey
    Joined: Oct 2009
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    DCockey Senior Member

    I talked to John Lindahl last week at the Quiet Water Symposium. He said most of the builders are currently frozen until the future direction of the rules is confirmed.
     

  10. jorgepease
    Joined: Feb 2012
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    jorgepease Senior Member

    These guys are pretty good with their rates on Core, it's where I got mine.
    http://www.easternburlap.com/
     
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