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Thread: J-Class versus 12Metre Class

  1. #1
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    Default J-Class versus 12Metre Class

    Back to 12Metres and J-Class discussion after a year or so !

    This time is to propose some plans for the J-Class as well for the 12Metre.

    The list is limited to some of the boats made so far.

    The 12Metre Class list is split into sections, the projects made BEFORE the Intrepid and the ones made AFTER the Intrepid.

    The difference consist on the variations introduced to the Hull.
    Rudder was displaced toward the transom with the use of a skeg support, the keel become shorter and equipped with a Trimmer Tab.

    It should be very interesting to introduce the Trimmer maneuverability with a dedicated servo.

    Actually the intent is to propose plans in both classes below the 115/120cm length.

    The source of plans is the F.Chevalier America Cup Encyclopedia

    I would therefore ask to select 2 plans for each series. The plans that will receive the higher number of votes will be transformed in constructional plans composed of 2 views and shadows to scale 1:1.

    2 boats in the J-Class
    2 boats in the 12Metre before Intrepid (long keel)
    2 boats in the 12Metre after Intrepid (short keel & trimmer)

    This is the List that includes the model proposed size to scale 1/32 for the J-Class and the scale 1/17 for the 12Metre Class:



    Small scale outlines will be inserted in the next connection !

    ClaudioD
    Last edited by claudio; 02-17-2013 at 11:52 AM.

  2. #2
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    Default Re: J-Class versus 12Metre Class

    Here the first 12Metre side views - (before Intrepid - long keel ) :

    See page 6

    ClaudioD
    Last edited by claudio; 03-07-2013 at 03:35 PM.

  3. #3
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    Default Re: J-Class versus 12Metre Class

    The other 12Metre Class side views - (short keel - Skeg & Rudder and Trim-Tab) :

    See Page 6

    ClaudioD
    Last edited by claudio; 03-07-2013 at 03:35 PM.

  4. #4
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    Default Re: J-Class versus 12Metre Class

    Personally I would choose from the 'modern' 12Metre :

    - Courageous
    - Azzurra

    ClaudioD

  5. #5
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    Default Re: J-Class versus 12Metre Class

    For those who like to know how may 12Metres are around the World :

    http://www.trivia.de/Twelves.shtml

    ClaudioD

  6. #6
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    Default Re: J-Class versus 12Metre Class

    Quote Originally Posted by claudio View Post
    Personally I would choose from the 'modern' 12Metre :

    - Courageous
    - Azzurra

    ClaudioD
    Unfortuately none of my 12 metres are on your list .. maybe too modern

    My first choice would be Australia II as this was the boat that changed the game and took the Cup from the Yanks I will never forget that day, I was living in Melbourne at the time and the whole country just went wild !

    Click image for larger version

Name:	KA-6.jpg
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ID:	13046

    Second choice is Kiwi Magic KZ-7 because it is a ...well no prizes for guessing that one

    Click image for larger version

Name:	KZ-7.jpg
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ID:	13044

    Wild card choice is French Kiss FRA-7 only because she was lost LVC semi-final against Kiwi Magic and I called my sailing team KiwiKiss which was joke at the time in NZ sailing circles

    Click image for larger version

Name:	FRA-7.jpg
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ID:	13045

    Cheers Alan
    You can only create, what you can imagine

  7. #7
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    Default Re: J-Class versus 12Metre Class

    Quote Originally Posted by K1W120 View Post
    Unfortuately none of my 12 metres[/URL] are on your list .. maybe too modern

    My first choice would be Australia II as this was the boat that changed the game and took the Cup from the Yanks I will never forget that day, I was living in Melbourne at the time and the whole country just went wild !

    Second choice is Kiwi Magic KZ-7 because it is a ...well no prizes for guessing that one

    Wild card choice is French Kiss FRA-7 only because she was lost LVC semi-final against Kiwi Magic and I called my sailing team KiwiKiss which was joke at the time in NZ sailing circles

    Attachment 13045

    Cheers Alan

    Hi Alan,
    Of the boats you mention, I do have only the Australia II and Kookaburra II :

    See page 6

    The F. Chevalier America Cup Encyclopedia was issued in 86, therefore the boats developed in 87 are not included.
    Do you have the plans?
    I like the idea of wiglets but the keel form is well done to catch up weeds ! hem, further is complicating the construction and probable exposed to damages after construction.

    Cheers
    ClaudioD
    Last edited by claudio; 03-07-2013 at 03:36 PM.

  8. #8
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    Default Re: J-Class versus 12Metre Class

    Hi Alberto and Alan,
    My intention is to keep the list open for 2 months, max 3 months.

    The list updating is

    - Courageous : 1
    - Azzurra : 2
    - Australia II : 1
    - Kiwi Magic : 1 (plans ?)

    ClaudioD


    PS: Alberto I would appreciate if you could avoid to report the drawing outlines to avoid confusion - only text please !
    Thanks
    CD
    Last edited by claudio; 02-18-2013 at 05:15 AM.

  9. #9
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    Default Re: J-Class versus 12Metre Class

    Here below the side views of the 6 chosen J Class :

    See page 6

    ClaudioD

    PS : to note that the plans to the 1/28 scale of the Enterprise are already developed in the dedicated tread : http://www.rcsailing.net/forum1/show...NTERPRISE-1930
    Last edited by claudio; 03-07-2013 at 03:37 PM.

  10. #10

    Default Re: J-Class versus 12Metre Class

    -Hi, From 6 sailboats shown, I like the profile of the "Azzurra" It seems more elegant way of cutting the stern.
    -The previous post which included drawings has been removed.

    Greetings.
    -A ship in a harbour is safe, but this is not what a ship is built for._____________________________

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