Formula 40 singlehanded trimaran build log

Discussion in 'Multihulls' started by Corley, Aug 24, 2011.

  1. Corley
    Joined: Oct 2009
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    Corley epoxy coated

    Thanks Doug, It's nice to make some progress on this project and a major sticking point out of the way with a decent rig and sails secured.
     
  2. ThomD
    Joined: Mar 2009
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    ThomD Senior Member

    Just by the way, what is Kurt building now that his F-40 is gone?
     
  3. Oleboynow

    Oleboynow Previous Member

    although I have the utmost respect for all of you who build in sticky stuff and timber-- is is so very slow, I simply could not bear the thought of surfing down the trades in dead black of night, knowing that any time sooner or later I could be in my life raft, after hitting a dead bird or such:)) Well done you people, I will stick to heavy al al plate Good luck indeed
     
  4. Marmoset
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    Marmoset Senior Member

    perfect time to add that window you've been dreaming of though!


    Barry
     
  5. oldsailor7
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    oldsailor7 Senior Member

    Oldboy said:- "although I have the utmost respect for all of you who build in sticky stuff and timber-- it is so very slow." :rolleyes:

    Are you kidding. Wood Epoxy---- Buccaneer 24 complete less rig. 6 Weeks.
    Wood Epoxy-----Tehini 52 complete less rig. 4 Weeks.
    Wood Epoxy-----Kraken 40 complete with rig. 8 Weeks.

    What's all this stuff about 8 or 10 YEARS. :eek:

    Even a man, alone, (with some help lifting things), working part time (say average two hrs a day, 6 days a week,could build a B24 in just over a year.
    and a 40 ft Cat in not much more. :cool:
     
  6. Corley
    Joined: Oct 2009
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    Corley epoxy coated

  7. Oleboynow

    Oleboynow Previous Member

    no not really, I can build a 38 ft alloy boat in 260 hours, hull, decks , chines that is
    I started a ply dory, my God, after a week it was nowhere, I actually could have done the hull in 4 hours in steel, truly
    Smile,
    However google Greens, they build bullet proof round world racers from carbon fibre,
     
  8. Corley
    Joined: Oct 2009
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    Corley epoxy coated

    Personally I think the greatest relatively recent advance in custom boat building is full sized CNC cut foam plugs. To get an accurate hullshape that can be made into a female mold for limited series production is an amazing advance as fairing plug molds is a tedious job and time is money. On smaller multihulls ally's weight is a problem also a lot of internal framing and fairing required. Ply construction isn't so strong on impact but has desirable properties for lightweight construction and really good resistance to fatigue.

    Full carbon construction is nice but outrageously expensive for a privateer who is paying for a build out of his own pocket.
     
  9. Marmoset
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    Marmoset Senior Member

    its kinda like the hot rod conundrum really. Yeah some newer cars are more refined and cheaper to get, but its not a duece coupe, or which ever you prefer. there not always smart or logical, but its what ya want. ya want roomy and comfortable you can choose a Bently, or a all leather mini van.


    Barry
     
  10. Corley
    Joined: Oct 2009
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    Corley epoxy coated

    Exactly, it all boils down to choices in the end. Ply isn't glamorous but it is acceptably light in my application. I'm consistently staggered by how heavy many carbon performance trimarans turn out some weigh more than what you could achieve with a judicious use of foam sandwich or ply. When you look into it generally it's because some heavy cruising amenity has crept onto the boat or a large auxiliary has been fitted or surface area has been increased with fancy flares that look nice and make the boat more roomy.

    Fundamentally there isnt any point in trying to compete with professionals the sponsored teams will always be able to outspend an individual and log more time at sea tuning their boat for maximum performance. The important thing is that your race within a race is satisfying and you have the tools to acquit yourself well in a given Corinthian style event.
     
  11. Marmoset
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    Marmoset Senior Member

    agreed! again back to auto analogy, plenty of sports racing classes where guys have old tube chassis that are light enough to compete, and least be close enough to have fun, against guys with cabon monocoque chassis. yeah carbon is bit more rigid and such but at great expense.


    Barry
     
  12. Corley
    Joined: Oct 2009
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    Corley epoxy coated

    I've managed to purchase some nice dense, dry and old WRC for the beam cores. I'll probably get it machined at my local joinery when they reopen as their machines cut far less to waste than my table saw and I'm going to need some fairly thin strips in places.
     

    Attached Files:

  13. Marmoset
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    Marmoset Senior Member

    nice! not too many cracks, and what there is is nice and straight in your direction!


    Barry
     
  14. Corley
    Joined: Oct 2009
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    Corley epoxy coated

    Some wood butcher whacked nails in the end of the timber and split it but overall they are in good nick. Strip plank is required to be 12mm thick so I should get three thicknesses out of each plank after they are sawn and dressed (42mm depth).
     

  15. cavalier mk2
    Joined: Mar 2010
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    cavalier mk2 Senior Member

    Western red cedar is not good for beams imho. You really want fir or to make them much larger to compensate. As a youth I learned the hard way with masts after taking bad advise.
     
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