Lion 800 new plywood yacht

Discussion in 'Boat Design' started by Unik, Jul 22, 2016.

  1. Unik
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    Unik Senior Member

    Some more photos from the construction of the Lion 870
     

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  2. Unik
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    Unik Senior Member

    The assembly of the Lion 870 yacht is completed, the further work is grinding and gluing the hull with fiberglass

    viber image11.jpg
     
  3. Unik
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    Unik Senior Member

    Several new photos from the build of the yacht Lion 870

    For reliable protection of the edges of the plywood from moisture penetration, the joints and grooves of the outer skin are sealed with epoxy resin with filler.


    12.jpg
     
  4. rwatson
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    rwatson Senior Member

    Well, that's HALF the work/time and expense done with. The final fairing and painting, then the fittings await. It would be interesting to see if the time logging has been kept up, and the costs to date would be fascinating.
     
  5. Unik
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    Unik Senior Member

    Usually work on the construction of a yacht is conducted one day a week, today it is about 60 working days.
     
  6. Unik
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    Unik Senior Member

    To protect the edges of the plywood from moisture penetration, cracks are poured with epoxy resin with the addition of aerosil, for greater viscosity.
    For edge sealing, it is recommended to use epoxy resin, because the resin has a greater adhesion, in addition to filling the joint, the resin well impregnates the edge of the plywood.
    In order to prevent spreading of the resin, the seam is closed with a paint tape.

    More info
     

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  7. Unik
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    Unik Senior Member

    Grinding of the outer skin of the hull, preparation for gluing with fiberglass.
    To eliminate all unevennesses on the yacht's hull, to ensure a good fit of the fiberglass, the body is sanded with sandpaper, using a hand grinder.

    The hull of the yacht is sufficiently treated with sandpaper number 80, this paper well level the surface and leave it rough enough, this is necessary for good adhesion of fiberglass.

    All the work on grinding and preparing the hull of the yacht for gluing with fiberglass took about 10 hours with 1 person working.

    Read more

    1.jpg
     
  8. RHP
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    RHP Senior Member

    Last edited: Jun 25, 2017
  9. rwatson
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    rwatson Senior Member

    Cant figure out why they bothered with twin boards, and a single rudder as well. They are too close together to give advantage while heeled,
     
  10. Unik
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    Unik Senior Member

    I'm very cautious about these designs, because the design with twin boards located in parallel is a complex design, it takes up a lot of useful space inside the yacht, and does not bring tangible benefits while driving with sails.

    Apparently, therefore, this design is not widely used.
     
  11. rwatson
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    rwatson Senior Member

    Actually, the biggest benefit of twin boards, (when they are placed much closer to each side than the Atalanta), is that the centre of the boat is much more spacious.

    It may not help with sailing, but the increased room inside is improved.

    The Atalanta boards seem to be very close to the centreline, so their board cases take up a lot of interior space.
     
  12. Unik
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    Unik Senior Member


    I completely agree with your opinion.
     
  13. Unik
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    Unik Senior Member

  14. TANSL
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    TANSL Senior Member

    Forgive me the question, is it right for the hull to do that in the areas I have pointed out?
    123.jpg
     

  15. Unik
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    Unik Senior Member

    I did not understand the question, if you can specify what exactly your wrong
     
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