KLIS trimaran: owners wanted

Discussion in 'Multihulls' started by zombat, Dec 5, 2019.

  1. zombat
    Joined: Oct 2018
    Posts: 15
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    Location: Saint-Petersburg

    zombat Junior Member

    I see. Thank you!
    I sanded out old paints and varnish (or epoxy) from the portlight areas. Some rooten plywood only near the screw holes, other plywood is in good condition.
    We have debated with friend on a future plans: to sand out all paints from the cabin (sand to plywood and then cover with penetration epoxy) or fix weak areas only.
    So, your advice is velcome.

     

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  2. vinboot
    Joined: Jun 2020
    Posts: 9
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    Location: Netherlands

    vinboot Junior Member

    I should only treat the affected areas, the boat was made with epoxy covering and 2 components polyurethane paint and varnish. I don't know what happened with the boat in the last 30 + years.... IMG_2021.JPG
     
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  3. redreuben
    Joined: Jan 2009
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    Location: Beaconsfield Western Australia

    redreuben redreuben

    You might want to consider a plan to systematically go around all the fittings for rot around the screw holes.
    Drill each screw hole oversize, fill with good strength epoxy filler and re drill hole correct size. Future proof.
     
  4. vinboot
    Joined: Jun 2020
    Posts: 9
    Likes: 4, Points: 3
    Location: Netherlands

    vinboot Junior Member

    Very good proposition!
    I like to add a tip, in such cases I put some temporary tape behind the hole before filling it and also tape on top of the filler flush with the surface, the filler won't sag and I had much less sanding to do.
     
  5. redreuben
    Joined: Jan 2009
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    Likes: 98, Points: 48, Legacy Rep: 349
    Location: Beaconsfield Western Australia

    redreuben redreuben

    You can do similar with oversized washers, applies a bit of squeeze pressure too.
     
  6. zombat
    Joined: Oct 2018
    Posts: 15
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    Location: Saint-Petersburg

    zombat Junior Member

    Hi, Vinboot
    Equipped boat is about 1150 kilo.
    Do you remember approximate weight of the float?

     
  7. vinboot
    Joined: Jun 2020
    Posts: 9
    Likes: 4, Points: 3
    Location: Netherlands

    vinboot Junior Member

    Hi Zombat,

    The boat was never weighed. Bernard Rhodes indicated a weight of 544kg. I tried to build it light and that's why I estimated the weight of 600 kgs, maybe a bit optimistic. I only weighed the mainhull when it was turned after building and I think it was 150 kg, but I am not sure. I know that it was afloat and empty, there was always a float in the air. I also don't know what has been added in all those years.
     

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  8. zombat
    Joined: Oct 2018
    Posts: 15
    Likes: 0, Points: 1
    Location: Saint-Petersburg

    zombat Junior Member

    :)Vinboot,
    I want to clarify some details for my Klis repairing.
    I float deck has some rotten places. Actually, old plywood is breaken (right after the junction with the float frame) bacause of bad isolation of water and walking loads. I'm not sure how the float's deck plywood was connected with wooden float frame. Strong epoxy connection? I found sealant between them.
     
  9. vinboot
    Joined: Jun 2020
    Posts: 9
    Likes: 4, Points: 3
    Location: Netherlands

    vinboot Junior Member

    Hi Zombat,
    All the gluiing was done with epoxy & filler and nailed with silicone bronze barbed boatnails. These pictures (from old polaroids) give you an idea how it was build.
    The deck glued on first, then the beams (I can't recall if fasteners where used in the beam/gunwhale joint) the deck/beam joint close with epoxy&filler fillet. Hope you have enough info.

    IMG_2011.JPG IMG_2011.JPG IMG_2010.JPG IMG_2011.JPG IMG_2013.JPG

    Cheers,
    Vincent
     
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  10. zombat
    Joined: Oct 2018
    Posts: 15
    Likes: 0, Points: 1
    Location: Saint-Petersburg

    zombat Junior Member

    Thank you, Vincent!
    Now it is clear.


     
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