Construction of a trailer yacht Lion 550 Adrenaline

Discussion in 'Boat Design' started by Unik, Jul 18, 2017.

  1. rwatson
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    rwatson Senior Member

    Could you just use stitch and glue on a yacht around 8 metres , instead of chine logs ?
     
  2. Unik
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    Unik Senior Member

    I do not see any obstacles to using technology to stitch and glue on yachts up to 10 meters.
     
  3. TANSL
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    TANSL Senior Member

    What is the reason, in your opinion, in this limit to the 10 m of length ?. This is, indeed, a border that could be discussed and defined or confirmed by other experts in this constructive system.
     
  4. Unik
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    Unik Senior Member

    I think that for larger yachts it will be technically difficult to assemble without special equipment.
     
  5. TANSL
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    TANSL Senior Member

  6. Unik
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    Unik Senior Member

    Attached Files:

  7. Unik
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    Unik Senior Member

    Installing the kit on the slipway and assembling the hull Lion 550
    The whole construction is assembled in one working day

    More info
     

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  8. Unik
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    Unik Senior Member

    Assembling of structures yacht building, gluing.
    To date, the assembly of the yacht body is coming to an end, and the gluing of all the structural details, the design has gained stiffness and shape.

    more info
     

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  9. rwatson
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    rwatson Senior Member

    I like the idea of the side stringer CNC cut to the hull curve. That would ensure a smooth hull appearance as well as the added stiffness.
     
  10. Unik
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    Unik Senior Member

    A little more adrenaline, began to sew up the body of the outer skin, installed a bottom plate.
    For all about everything today, 15 sheets of plywood, 0.5 kg of epoxy resin and five days of work have been used.

    more info
     
  11. Unik
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    Unik Senior Member

    Forced simple, in anticipation of delivery of ordered materials, fiberglass, epoxy and the second part of the cutting.
    But the work continues, took several hours to install the straps for fixing the lining of the lockers in the case.

    More info
     

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  12. Unik
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    Unik Senior Member

    Сontinues construction of the Lion 550

    Received the ordered materials, the work continues, on the approach the second part of the cutting is also 15 sheets.
    Almost all hull structures are assembled, straps are installed, in the places of joints and intersections of plywood parts, fillets are made and pasted with fiberglass tape.

    More info
     

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  13. johnnythefish
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    johnnythefish Junior Member

    I am interested in your thoughts on the Birch ply for this construction - I have heard mixed reports on its suitability for boats, but have access to Wisa- Birch and Wisa-Spruce and wanted to hear from someone with real world experience on the subject? Anytime I seem to mention it - the standard response is build with BS1088 Marine Ply - but to be fair, I am really struggling to find any which seems to be of "true" quality and added to that, I would rather build boats out of wood that I know is sustainably harvested - but there definitely seems to be a negative impression of non-tropical woods in plywood boat building circles?
     
  14. rwatson
    Joined: Aug 2007
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    rwatson Senior Member

    Good question, it will be interesting to know more about the ply.

    From my experience, its the quality of the glue that makes the difference. That makes sense, as delamination between layers is what will wreck the build.

    The non tropical wood negativity is most certainly the weight constraints, and possibly the oiliness of non-tropic timber for epoxy adhesion. Certainly, tropic wood itself is not very durable, so Birch and Spruce aren't any worse.
     

  15. johnnythefish
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    johnnythefish Junior Member

    Isn't Spruce a fairly light and strong timber - I thought it was used in aircraft - and as you said rwatson the rot resistance thing is kind of quirky given how much okume is loved in boat building and yet is rated as very low on the rot resistant spectrum...
     
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