Page 1 of 2 12 LastLast
Results 1 to 35 of 59

Thread: Building a Seaclipper 20 trimaran

  1. #1
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Building a Seaclipper 20 trimaran

    Hiya everybody. Last fall, together with a friend, I started building a Seaclipper 20, a plywood trimaran designed by John Marples and Jim Brown. We are documenting the building process in a blog: http://seaclipper20.blogspot.it. It's not exactly wooden boatbuilding, but for sure there's a lot of wood in that boat!

    If you want, come by, have a look and leave us a message.

  2. #2
    Join Date
    May 2009
    Location
    Fort Worth, Texas, USA
    Posts
    2,406

    Default Re: Building a Seaclipper 20 trimaran

    Looks like a great project.
    Did you use un-thickned epoxy to coat the gluing surfaces before you put on the thick putty?

  3. #3
    Join Date
    Sep 2004
    Location
    Cape Fear, NC, USA
    Posts
    2,778

    Default Re: Building a Seaclipper 20 trimaran

    Nice job, and thanks for documenting the work. It will be a help and inspiration to many.
    This is the first lesson ye should learn: There is so much good in the worst of us, and so much bad in the best of us, it doesn't behoove any of us to speak evil of the rest of us.
    E. Cayce

  4. #4
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    No, I just spread the putty on the bare wood. I was surprised to read this recommendation in different places.

    Quote Originally Posted by upchurchmr View Post
    Looks like a great project.
    Did you use un-thickned epoxy to coat the gluing surfaces before you put on the thick putty?

  5. #5
    Join Date
    Apr 2009
    Location
    Mountain lakes of Vermont
    Posts
    16,159

    Default Re: Building a Seaclipper 20 trimaran

    Looks great !
    I was born on a wooden boat that I built myself.

  6. #6
    Join Date
    Feb 2006
    Location
    Pennsylvania
    Posts
    9,230

    Default

    Nice.
    -Dave

  7. #7
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    Here's a photo showing the current status. We're about to put the 12 mm decks on the floats (amas).



    For more details go to the blog: http://seaclipper20.blogspot.it

  8. #8
    Join Date
    Aug 2005
    Location
    SF Bay Area- Richmond
    Posts
    16,422

    Default Re: Building a Seaclipper 20 trimaran

    Nice!
    "The enemies of reason have a certain blind look."
    Doctor Jacquin to Lieutenant D'Hubert, in Ridley Scott's first major film _The Duellists_.

  9. #9
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    Putting the deck on the first ama



    For more details go to the blog: http://seaclipper20.blogspot.it
    Last edited by pippo; 10-03-2014 at 06:06 AM. Reason: typo

  10. #10
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    Gluing the steel studs to the ama bukheads



    For more details go to the blog: http://seaclipper20.blogspot.it

  11. #11
    Join Date
    Feb 2001
    Location
    On,Canada
    Posts
    131

    Default Re: Building a Seaclipper 20 trimaran

    Very nice,We are considering building a Kurt Hughes D32

  12. #12
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    The D32 is a fantastic boat. I love those rapid construction multihulls by Hughes. I dig the 30 footers!

  13. #13
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    Here's the first ama with the deck on, ready for the glue. The two steel studs are clearly visible.



    For more details go to the blog: http://seaclipper20.blogspot.it

  14. #14
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    Here's the first ama competed, ready for finish and paint job



    For more details go to the blog: http://seaclipper20.blogspot.it

  15. #15
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    Both floats ("amas") completed and set apart. This image gives a better idea of sizes and lines



    And here are the two amas stacked aside to make room for the main hull



    Time to start the main hull (vaka) now. For more details go to the blog: http://seaclipper20.blogspot.it

  16. #16
    Join Date
    Nov 2005
    Location
    Montreal
    Posts
    7,507

    Default Re: Building a Seaclipper 20 trimaran

    Ciao Pippo

    E 'bello vedere voi costruire una bella barca del genere. Sembra fantastico e quasi pronto a dipingere!

    Devi essere eccitato!

    Cheers!



    Pietro
    Do it,do it,do it,do it,do it,do it,do it,now!
    J.Lennon

    This boat was built with ten thumbs.No fingers were harmed in anyway.

  17. #17
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    Ciao Peter, great to hear from you! Your Italian has improved a lot lately ;-) This boat is a bit more work than expected, but it's built like a supertank! Now we've got the hang of it so I expect to be able to complete the main hull in a couple of months' worth of weekends...

  18. #18
    Join Date
    Jul 2005
    Location
    Australia
    Posts
    2,106

    Default Re: Building a Seaclipper 20 trimaran

    Great pictures Pippo !

    Coming along really well. Those cradles look really handy.

    Are you leaving the epoxy off the exterior to save weight ?

  19. #19
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    Thanks boat fan. No, we're just postponing the epoxy coating/finishing phase at the end. We still have to decide whether to cover the whole boat with fiberglass, or just cover the chines with glass tape ...

  20. #20
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    Here's a pic of the main hull (vaka) with bulkheads, transom and stem glued and filleted. The hull shape turned out quite fair and straight.



    For more details go to the blog: http://seaclipper20.blogspot.it

  21. #21
    Join Date
    Nov 2005
    Location
    Montreal
    Posts
    7,507

    Default Re: Building a Seaclipper 20 trimaran

    Hi Pippo!

    Looks very solid.I would be tempted to glass the entire outside just to protect against normal wear and tear.....and abrasions. It must be fun working in such a cozy shop


    Continued progress!!


    Ciao,


    Peter
    Do it,do it,do it,do it,do it,do it,do it,now!
    J.Lennon

    This boat was built with ten thumbs.No fingers were harmed in anyway.

  22. #22
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    Ciao Peter. You're right, the shop is a bit too cozy but we can roll the boat forward thanks to the wheeled cradles!

  23. #23
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    Here's a view (taken from the second floor) of the vaka (main hull) with all soles glued in.



    For more details go to the blog: http://seaclipper20.blogspot.it

  24. #24
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    We glued the bottom on the main hull.



    For more details go to the blog: http://seaclipper20.blogspot.it

  25. #25
    Join Date
    Jul 2005
    Location
    Australia
    Posts
    2,106

    Default Re: Building a Seaclipper 20 trimaran

    Good to see you back Pippo !

  26. #26
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    Vaka bottom glassed with two layers of 160 g/m^2 cloth and epoxy resin.



    For more details go to the blog: http://seaclipper20.blogspot.it

  27. #27
    Join Date
    Dec 2012
    Location
    Providence, RI USA
    Posts
    1,525

    Default Re: Building a Seaclipper 20 trimaran

    Ciao Pippo.

    Che una bella barca!

    Buon lavoro!

    Mike

  28. #28
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    The vaka is now complete. We're officially in the finish phase now!



    For more details visit the construction blog: http://seaclipper20.blogspot.it
    Last edited by pippo; 05-29-2016 at 03:56 AM.

  29. #29
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    We have completely fiberglassed the three hulls. For more details visit the construction blog: http://seaclipper20.blogspot.it

  30. #30
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    Let me ask a question: which sequence would you follow to finish the hulls? They're completely fiberglassed now but they're not smooth since the weave has not been filled (one can feel the roughness of the weave with the fingers).
    I was thinking something like this:

    1) clean everything to take care of the amine blush
    2) fill the weave with microsphere thickened epoxy
    3) sand and clean
    4) paint with primebr /> 5) sand and clean
    6) coat with paint/enamel

    Would this work? Any suggestions?
    Last edited by pippo; 09-16-2016 at 09:14 AM. Reason: typos

  31. #31
    Join Date
    May 2009
    Location
    Fort Worth, Texas, USA
    Posts
    2,406

    Default Re: Building a Seaclipper 20 trimaran

    It will work, I assume you are going to be painting the hull.

    The Gougeons protection scheme from moisture vapor penetrating the hull depends upon multiple coats of epoxy.
    If you put microballoons in a coat there is less solid epoxy to to prevent (slow down) the moisture penetration.

    My Guess is that this will reduce the protection.

    It is difficult to get blush out of the glass weave - all those tiny pockets. While washing the surface, you might want to use a short, stiff brush to get down into the pits. I didn't one time and got a perfect pattern of nasty yellowish dots where the blush was left. It was bad first because I wanted a "wood" look finish (bright).
    You won't see it in the final product if the boat is painted, but you still will have less strength in the coating - nothing sticks to blush.

    This whole issue is why people suggest coating to fill the weave before the first layer fully cures.

  32. #32
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    The problem was that the hull panels are not flat and I'm sure that we would have had migration of clear epoxy towards lower parts. I mean, it should be still possible to fill the weave now, after cleaning everything. In any case, we'll paint the boat for sure.
    Here's yours truly in the cockpit

    Last edited by pippo; 09-18-2016 at 03:09 PM. Reason: added photo

  33. #33
    Join Date
    May 2009
    Location
    Fort Worth, Texas, USA
    Posts
    2,406

    Default Re: Building a Seaclipper 20 trimaran

    If you don't put the fill coat on too heavy, it will stay on the glass weave on a vertical surface without migrating down (or sagging).
    Too much and it will.

    You certainly can clean of any blush at this point, relatively easy.

  34. #34
    Join Date
    Dec 1999
    Location
    Matera, Italy
    Posts
    281

    Default Re: Building a Seaclipper 20 trimaran

    We've completed the blades and started working on the akas:



    For more details visit the construction blog: http://seaclipper20.blogspot.it

  35. #35
    Join Date
    Jul 2005
    Location
    Australia
    Posts
    2,106

    Default Re: Building a Seaclipper 20 trimaran

    The problem was that the hull panels are not flat and I'm sure that we would have had migration of clear epoxy towards lower parts. I mean, it should be still possible to fill the weave now, after cleaning everything. In any case, we'll paint the boat for sure.

    Hi Pippo

    I did not want the weave pattern telegraphing through the finish either , so I filled with a thin screed of filler coat before the first coat of glass and resin had set.

    I turned each surface horizontally to do it. Its slower doing it this way ,but you get a chemical bond between layers that way and no blush issues.



    I sanded and put on another seal coat after that.



    You should still be o k if you scrub off the blush thoroughly with a scotch pad and / or bristle brush.

    The boat looks good.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •