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  1. #15
    Senior Member
    Join Date
    Apr 2004
    Posts
    1,247
    If you click on picture it should open up and be readbale. As you suggested I used vectors. I tarted by using speed in a flattish water gybe then assumed if there is a 5 knot wave it will add 5 knots to board speed in one direction (relative to sea floor or ny other stationary point). Maybe if you can read results look at final row and see if that looks about right, and any suggestions to modify any addumptions
    Boards: F2 Gorilla 76, Tabou Quadster 86, Fanatic Triwave 95, Starboard Kombatwave 96, F2 Stoke 115, JPFreeRace 125, Sails: Gaastra Poison 4.2, North Hero 4.2, North Ice 4.7, Simmer Icon 5.3, Gaastra Cross 6, Ezzy Elite 6.1, Tushingham Storm 6.5, Severne Turbo 7.5

  2. #16
    Quote Originally Posted by boards_Tomas View Post
    Being able to stay sheeted on a downwind run is not the issue. (If you go fast enough downwind you'll actually be unable to open the sail without backwinding.) The issue is how to deal with the sail as you keep turning through downwind and power up clew first.

    Did you rewatch the video above? We've got proof you've actually seen it before. But you've apparently got a blind spot the size of the wave sail.


    Not sure what you are going on about.

    In onshore wave riding, of course you have to open up the clew at some point, and the more onshore the wind, generally the sooner this will be.
    But the point explained by apparent wind, is that it's not as simple as you might think.
    The point at which you need to open up the sail is more down to the wave you are on and the speed it allows the sailor to generate DESPITE the true wind direction.

    Think: Wind direction, wave power, wave slope, sailor ability, the board sailor is on in terms of float, rails and rocker line. When all those factors come together you can stay sheeted in longer because of the apparent wind sailed to. At the other end of this idea, the learner wave sailor on a small and slow wave crawls along the wave face having to go clew first from the beginning.


    Thing is, it's great to have an intellectual understanding of apparent wind, but it's far more important to get out there and learn to surf the wave well, sheeting the sail to what wind you feel in your hands.
    Now back in the UK.

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