6.5 to 7.5 metre performance/cruise multihulls

Discussion in 'Multihulls' started by Gary Baigent, Feb 27, 2015.

  1. Gary Baigent
    Joined: Jul 2005
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    Location: auckland nz

    Gary Baigent Senior Member

    We had a 3.7m tide today; that's the highest we get on the Waitemata but over the hill a few miles to the South, for Aucklanders living on the Manukau Harbour, their tides, and being on the West Coast, are nearly a metre higher again.
    At Cox's, because it is deeper than the surrounding bays, we can average 2 hours sailing and get back to mooring before tide drops; today it was more like 4.
    Here is the breathed on Buccaneer 27 with tide out - maybe 3 hours after full tide at Cox's.
    Otherwise if you are late getting in, you anchor further out and walk back through what sems miles of eel weed and mud, then later come back and shift in at next tide - or keep sailing for the rest of the day.
     

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  2. Gary Baigent
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    Location: auckland nz

    Gary Baigent Senior Member

    Got the leading and trailing fairings onto the beam of Frog, early days, more sanding required, just checking the fit.
    And here's an arty farty Auckland late autumn shot for you home builder connoisseurs.
     

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  3. Gary Baigent
    Joined: Jul 2005
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    Gary Baigent Senior Member

    Weighed Frog's parts:
    Main hull, beam. foils, rudder, boom
    total 100.5 kgs
    main hull with dagger weighs 56 kgs
    6.5 metre main beam is 28.5 kgs
    - plus to-be-built wing mast and minimal floats I estimate (based on building and weighing Sid's mast/floats) another 45 kgs
    so all up weight for Frog 6.5 metre is around 145-150 kgs
    Very light Frog should leap away?
     

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  4. santacruz58
    Joined: Oct 2014
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    Location: lower hutt,NZ

    santacruz58 Senior Member

    Very light indeed Gary. Frog will leap all right. Will you be using the same rig as Sid?
    On another note you might have noticed that my address has changed to lower hutt in NZ. I would never have guessed that a year ago when I first started following your posts I would be moving to NZ. Be there middle of June.
    nelson
     
  5. Gary Baigent
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    Gary Baigent Senior Member

    You're almost a Kiwi Kaiwai now, Nelson?
    Sid has 11.5m x 500mm wing mast, which would be way overpowering for Frog; I'm thinking of 9m x 350-400mm. Because I'm a conservative?
     
  6. HASYB
    Joined: Jun 2011
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    Location: The Netherlands

    HASYB Senior Member

    Conservatively conserving conservatism would make you a conservationist for conservatives conservatively sailing conservatively rigged conservative conserves dwellings like foilers? Hmm, interesting?
    However, still think Frog is a bit of a downhill trend, battle and awkward even outlandish intellectual demeanor after Fallen Angel, Groucho, Judge Dred, Flash Harry, Sid or whatever, whoever the original inspiration was for the names for all your wonderfull flying apparatus.

    Who am I?
    Just seriously trying to make as much sense as possible?
    Lost in translation?
    Quacking?

    Cheers,
     
  7. Gary Baigent
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    Gary Baigent Senior Member

    Lay off those dangerous weeds, Hasyb.
    Yes, Frog is downhill trend, like owner, but ... what I have in mind for the minimal floats (actually just a downward extension of the beam ends) and two foils each side - may not be very conservative. There are a couple of shed wall sketches a couple of pages back here.
    In fact may be very dangerous ... but I'll give it a go.
    This has been done by a few crazed individuals before like Doug Halsey, and he (and a couple of other purist foiler designs, Blue Arrow and NF2) have been successful; actually in Blue Arrow's case, semi-successful; er, actually maybe a failure.
    But a glorious one?
    Hail the pioneers, no floats, just foils. In Frog's case there will be more flotation.
    Because of conservatism?
     
  8. HASYB
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    HASYB Senior Member

    Conservationalism is more appropriate than conservatism?
     

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  9. HASYB
    Joined: Jun 2011
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    HASYB Senior Member

    To be honest, I haven't smoked in more than 10 years and never felt as high natural than down to Earth ever.
    To be serious, I was more or less running not so funny jokes referring more and less to the names of your flying pierremachochels, I mean, from the hight and flight of a Fallen Angel, the razor-sharp intellect of Graucho to the leaping and croaking Frog.

    I fully understand, at least I think or hope I do, and like, even respect, the way you build your boats.
     
  10. santacruz58
    Joined: Oct 2014
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    Location: lower hutt,NZ

    santacruz58 Senior Member

    You guys are too intellectual for me. Is it still a trimaran if only foils are at the ends of the beams? Maybe it really is a mono with foils.
    Just poking a little fun at you.
    nelson
     
  11. Gary Baigent
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    Gary Baigent Senior Member

    Yes, that was Peter de Savary's argument when the Blue Arrow team fronted with their "monohull" as a rogue Americas Cup challenger. However they had a swelling area above the foils (which obviosly wasn't large enough in volume) - so that was their (weird?) excuse.
    Frog, on the other hand, er, webbed foot, has a substantial (proposed) bent down beam with, by comparison to Blue Arrow, an enormous flotation area .... PLUS, two foils, what could go wtong; the comparison is such that there is no comparison.
    However, returning to seriousness and hard earned empirical education, on Flash Harry the floats were really small and were of V cross section so there was minimal buoyancy there - and yet there was only one time over a period of many years, when carrying full sail in strong gusting winds and, for Harry, large against tide waves, that the foiler tripped and buried the float waaay down. The bury in this early 1980s photograph is nothing compared to what I'm describing. And I, with lightning reactions eased main and it slowly rose to surface again. Will that happen to Chook, I mean, Frog? (See my facebook page for Chook explanation).
    Not with the said two foils working hard to keep the craft in equilibrium?
     

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  12. HASYB
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    HASYB Senior Member

    Well, that idiot savant of a Savery was only a bit out his debts apparently, wasn't he; Froggy should swim lightning fast with those webs.
    I'm afraid the Facebook Clan doesn't allow me to look for your Chook or Frog explanation and we all know what Groucho said about clubs that want you as a member.

    To keep the momentum of seriousness and hard earned empirical education going; everybody knows, but isn't hardly aware, that if an egg is broken with outside force life dies, but if broken with inside force life begins.

    I guess its about developing equilibrium.

    "Le vent, ce n'est pas un copain mais c'est avec lui qui je joue", Loic Peyron.
     
  13. Gary Baigent
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    Gary Baigent Senior Member

    Frog with wing beam in transporting position. Next job, floats. Have almost finished the carbon beam clamps.
     

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    Last edited: May 31, 2016
  14. Gary Baigent
    Joined: Jul 2005
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    Location: auckland nz

    Gary Baigent Senior Member

    Altered double foils in approximate trailering (and sailing with beam swung round to position) - will they work?
    The upper foil will be set just below the bent down float/beam (really a continuation of beam) and I'm hoping will provide power and lift to lift clear for the larger main foil to take over.
    Will there be strange vortexes fighting each foil tip? Will there be enough lift once boat is moving to stop float bury? Will find out soon enough.
     

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  15. sigurd
    Joined: Jun 2004
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    Location: norway

    sigurd Pompuous Pangolin

    The never heretofore seen F Froigl! With hysterically confusing tip vortices!

    Are you hiking out very much at all on Sid, will you on Frog?

    Be careful though, that's not foil attachment tape, but ordinary duct tape!
     
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