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  1. #1
    BlaZinMJ's Avatar
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    porpoise definition

    what does it exactly mean to porpoise?


  2. #2
    Hydrotoys's Avatar
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    Different things to different folks... this is why you can't always understand exactly the symptom.

    Basically some of the more common symptoms:
    -Front to back ocillation. Think of a rocking horse.
    -Bouncing bow of boat, sometimes uncontrollable for no reason.
    -Rough water pump unhooking, over and over.
    -chine hopping in turn.
    -Put your hand flat on a table. Touch only with your fingertips. Now touch only with your heel of your hand. Some skis have an unmistakable motion like this. Not necesarily porpoising.

  3. #3
    Moderator boataddict's Avatar
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    Get on a two seater Polaris with 2 people and you will know.
    Up Down up down up down up down up down up down.....

  4. #4

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    In certain RPM's or speed and water conditions the nose will just bounce up and down...

  5. #5
    Moderator RX951's Avatar
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    A boat is porpoising when it is pitching up and down as it moves forward and when there is no surface disturbance causing the motion.

    angle of attack
    weight distribution
    power to weight transfer ratio

    can all have an effect to induce porpoising

  6. #6
    HOSS's Avatar
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    Rolled up on some feeding near the Chandeleurs once. Don`t wanna mess with them. Teeth looked pretty badass.

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  8. #7
    Gotta love this sport! 05Limited's Avatar
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    Quote Originally Posted by BlaZinMJ View Post
    what does it exactly mean... porpoise?
    To do something deliberately or intentionally... as in, "I made my ski bounce repeatedly on porpoise!"

  9. #8
    Moderator The Bandit's Avatar
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    Yeah mine was pretty bad until I installed the RE's. Now it is gone

  10. #9
    SHIFT's Avatar
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    when it bounces and eventually jumps out of the water at 112km/h
    thats about the time when i trim it down a notch

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