Select Fins: Fast fins special sauce - surface area and depth

  • Weiter geht's mit "Theorien" von Select... :)




    [h=2]SPECIAL SAUCE[/h]
    Welcome back to episode 2 of our series on windsuring fins - where we're busting a few myths and giving you the facts on fin technology.

    Last time we got really scientific. This time we're going to use that theory and examine a few more preconceptions.

    YES OR NO - THE MORE SURFACE AREA MY FIN HAS THE MORE LIFT IT WILL GENERATE
    Maybe yes - but only when all other parameters like twist / flex / rake angle and profile are the same.

    These parameters all influence the amount of lift a fin generates. It's easy to construct fins with equal amounts of lift - but that differ 30% in surface area.

    As explained in episode 1, using a thin (e.g., 8%) profile ratio compared to a thick (e.g., 11%) profile ratio, the amount of lift per given area differs by a fair amount.




    FACT OR FICTION? SHORTER FINS ARE ALWAYS FASTER THAN LONGER FINS
    A real misconception! So … for a given board type and sail size AND the type of sailing (e.g., speed or upwind sailing) only one size of fin will give the optimal amount of lift.


    If your fin's too short it won't lift the board enough and therefore you'll have more wetted surface area and be significantly slower than if you used a longer fin

    If your fin's too long it'll deliver too much lift and as a result your board will be difficult to control with errative behaviour such as spontaneous tail walks.

    Next time we'll look at profile, how construction methods influence handling characteristics and price factors such as custom fins versus production models. Hope you score some wind in the meantime!

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    Tipp Weltmeister F1 2011 & 2013, Tipp Team-Weltmeister F1 2009, 2010, 2011, 2017, 2019, 2020, 2021!


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    Verbrauch derzeit:
    810081.png, mit C253.
    595812.png, mit R107.
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