Theoretical Maximum Boat Speed?

Discussion in 'Laser Talk' started by drjoefo, Jul 4, 2007.

  1. KdaP

    KdaP New Member

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    what happens if you move the mast forward ? (other than the sail moving forward to :p)
     
  2. 49208

    49208 Tentmaker

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    Anytime you change the center of effort for the sailplan, you affect how the boat tracks thru the water due to the relationship with the center of lateral resistance. Moving the sailplan forward will cause the boat to eventually head away from the wind as the CE moves forward of the CLR
     
  3. KdaP

    KdaP New Member

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    right, but then couldnt you make the boom longer to balance it out,:) meaning the aspect ratio is lowered:mad: which then means you have to increase the height of the sail:), which then means youd have to trapeze,:D which isnt really possible on a laser.:mad:
    im begining to think they actually did think about the design :eek::p:eek:...
     
  4. madyottie

    madyottie Apprentice

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    which could be something to do with the fact that the bethwaite hulls are not even class legal in the 18's anymore.... the actual underwater hullshape is now an Iain Murray one-design!! Unless I've been very mis-informed!

    if you want to talk about pure boatspeed in a single-hander, I think the two fastest at the mo are the RS700, and the IC with asymmetric kite. Or you could just buy an A-class cat.

    The hull shape on a laser, although excellent for its purpose, isn't really suitable for high speed, as it suffers from too much curvature in both directions near the stern, and an inherent lack of dynamic stability caused by the same. Take the example of a twelve foot skiff www.rclass.org or www.skiff.org.nz and you'll notice that for the last eight feet, there is no rocker, and virtually no taper, just a big flat planing area, slightly curved from side to side. lots of sail area, not much boat!
     
  5. KdaP

    KdaP New Member

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    :D that sounds exiting:D but then lasers are also exiting cept in a different way, cos there are so many lasers around it makes it more interesting. for example i know here in Hong Kong that theres only really one (maybe) 2 super high performance boats like a laser 5000 - which now has a whole in it :(
     
  6. LAKEERIELASER

    LAKEERIELASER New Member

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    I took a GPS out with me the other day in about 22 knots of wind and 2 foot chop and hit 17.2 knots. I have gone way faster than that day but i didint have a GPS on board.
     
  7. KdaP

    KdaP New Member

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    thats quite fast...
     

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