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Converting my Nordship808 to JR

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  • 21 Apr 2025 16:00
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    Reply # 13490056 on 13481250
    Anonymous member

    Today first try to fit in the sleeve

    2 files
    Last modified: 21 Apr 2025 19:14 | Anonymous member
  • 19 Apr 2025 15:22
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    Reply # 13489462 on 13481250
    Anonymous member

    Proceeding. 


    2 files
  • 16 Apr 2025 17:35
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    Reply # 13488175 on 13481250
    Anonymous member

    Today the first step (the mast step) was laminated. 3 layers of plywood 16mm (A100) glewed in the front section and laminated with 2 layers of 300gr roving + 1 layer of 450gr roving. Will be reinforced when laminating the partner for the sleeve in the correct angle.

    I wonder if I should put a metal plate to the bottom, or if epoxy laminate will be strong enough to withstand the hammering of the mast. 

    I decided to work with a 200/5mm aluminum tube as sleeve for the mast.

    Is there any experience how to pull the mast out once it should be filled with moulding PU in the sleeve, any separator advice? Or rather use wedges?

    More questions to arise...

    1 file
    Last modified: 16 Apr 2025 17:41 | Anonymous member
  • 14 Apr 2025 15:30
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    Reply # 13487079 on 13481250
    Anonymous member

    As my second given name is precision, how to get the round supports for the partners?

    1 file
    Last modified: 14 Apr 2025 16:26 | Anonymous member
  • 07 Apr 2025 09:53
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    Reply # 13484272 on 13484056
    Anonymous member (Administrator)
    Anonymous wrote:
    Anonymous wrote:

    That pain will soon be all forgotten :-D

    soon, I laugh my head off!
    the first step of a great one way adventure !
  • 06 Apr 2025 15:50
    Quote
    Reply # 13484056 on 13484012
    Anonymous member
    Anonymous wrote:

    That pain will soon be all forgotten :-D

    soon, I laugh my head off!
  • 06 Apr 2025 07:10
    Quote
    Reply # 13484012 on 13481250
    Anonymous member

    That pain will soon be all forgotten :-D
  • 05 Apr 2025 14:31
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    Reply # 13483750 on 13481250
    Anonymous member

    First cut is the deepest...

    3 files
  • 02 Apr 2025 11:37
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    Reply # 13482099 on 13481250
    Anonymous member

    I could make an inner sleeve from a second mast section to slide in, but I intend to make an external sleeve with a 180 - 200mm cylindric tube and fill the gap with moulding PU.
  • 01 Apr 2025 20:35
    Quote
    Reply # 13481857 on 13481250
    Anonymous member

    You can make an internal sleeve from the same size tube with a sliver cut out from it - I had one inside Tystie's mast - but it's hard to do, and I'm not convinced it adds much strength. I think it's better practice to use a sleeve of uncut tube, and if it's too big, fill the gap with casting polyurethane.

    Yes, the maximum bending stress is at deck level.
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