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Thread: "1290" Class M Hard Multi Chine Hull

  1. #51
    Join Date
    Apr 2005
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    Toulouse (Fra)
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    Default Re: "1290" Class M Hard Multi Chine Hull

    Hi Clark,
    Yes it is true, chined hull are fast.
    At the begin of the year I was busy with other designs like 10R, IOM and a Class M, when it happen to read a paper from a Canadian/Belgian Architect Alex Quertenmont about the peculiarity of chine hulls.
    Was so interesting that I changed my mind and start drawing a multi chine hull. The major expected parameters were: speed, maneuverability, close hauled and stability performance. True or not, who knows ! but now I'm fully involved with the construction.

    The name is in the title "1290 C" as 1290mm length and C for Chine.

    No time to build the 400liters basin to experiment the Swirling paints, but certainly not to hide the hull forms.

    I learn also how it is difficult to draw chine shadows. 4 panels is rather easy, 5 panels is getting complicate and six panels really difficult in order to combine the focal points that warrant the developed surfaces.

    Other then the hull form I want to experiment also the radial jib similar to the one developed by Hoyt.
    It may that the rudder stock will be linked to an easy accessible pulley to avoid pulling/pushing rod swing requiring wider holes. (see below)

    Pictures are generally substituting words.
    At the moment busy with a lots of details, Fin Box, reinforcement Shadows, deck layout including the transom, this is why I just worked around a mock up to visualize future tasks.
    Here where I am, even my thinking is already somewhere else like a model that can be faster then a IOM a well a Class M and 115cm - 45" long.
    Cheers
    Claudio
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    Last edited by claudio; 04-23-2017 at 12:51 PM.

  2. #52
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    Default Re: "1290" Class M Hard Multi Chine Hull

    Some more progress !
    This time was spent to carry on with the Fin Box. Small piece but time demanding for bonding and lamination.
    Box made with 1.5mm plywood and 105g/m glass/epoxy.
    Possibly adding another layer of glass/epoxy once bonded to the Hull.
    Hull slot to be trimmed.
    I also started presenting and checking the real shadows necessary for the assemblies. Not all shadows are made and in particular the ones required as support of the radial/sliding Jib Box.
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  3. #53
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    Default Re: "1290" Class M Hard Multi Chine Hull

    I'm jumping from one thing to the other ! To many to do yet !!!
    This is the period for small boxes construction.
    Here the beginning for the Sliding Radial Jib Box.
    The Inner Box is done first to be ensure that the External box will be adapted to the dimensions of the inner one
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    Last edited by claudio; 04-25-2017 at 06:51 AM.

  4. #54
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    Default Re: "1290" Class M Hard Multi Chine Hull

    Long rally today !
    New peaked Deck lamination with 1 x 85g/m + 2 x 48g/m glass-epoxy.
    Laminated also second face of jib box elements.
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  5. #55
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    Default Re: "1290" Class M Hard Multi Chine Hull

    Today bad weather and rain

    Peaked Deck de-molded.
    The old one 4g is lighter although larger !
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