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  1. #1
    MPower's Avatar
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    Lightbulb Ideal trim postion for speed runs.

    I've heard one click from full up is the sweet spot. I also know it may vary between boats. On my boat running one click from full up the ski is pretty solid, but at around 74 MPH she starts getting a slight up and down motion. It isn't very bad and you can control it to keep from coming unhooked.

    Is there a concensus on the best trim position?

    Full up or one click from full up?

    Discuss....


  2. #2
    mrbtd's Avatar
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    I would bet it depends on where the trim is adjusted to on any given ski.

    In theory the angle should be identical to the venturi for best speed (no restriction in flow). This tells me neutral when set correctly is the fastest.

  3. #3
    My son (mohawk man) jeffsntx's Avatar
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    On my highlighter ski, it will pick up just a little bit of speed at one click up. At speed there is too much thrust coming through the nozzle and I can not click it all the way up no matter how hard I try.

  4. #4
    My son (mohawk man) jeffsntx's Avatar
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    Quote Originally Posted by mrbtd View Post
    In theory the angle should be identical to the venturi for best speed (no restriction in flow). This tells me neutral when set correctly is the fastest.
    The further you trim it up the more the bow lifts out of the water making the boat speed up due to less wetted surface. (To a certain extent)

  5. #5
    Quote Originally Posted by jeffsntx View Post
    On my highlighter ski, it will pick up just a little bit of speed at one click up. At speed there is too much thrust coming through the nozzle and I can not click it all the way up no matter how hard I try.
    Mine is the same on both counts. One click up is best and I have to let off the throttle to trim all the way up.

  6. #6
    DAGO RACING CREW 97GPSLEEPER's Avatar
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    I believe some people get the fastest speeds with the trim in the neutral position, but this is due to the trim tab set up and ride plate angle. If you can get enough lift with the tabs and ride plate, the thrust is more efficient coming out at the same angle as the pump nozzle. This is why many people make sure the steering nozzle lines up with the pump nozzle in the neutral position.

  7. #7
    mrbtd's Avatar
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    Quote Originally Posted by jeffsntx View Post
    The further you trim it up the more the bow lifts out of the water making the boat speed up due to less wetted surface. (To a certain extent)
    Maybe our angled plates are doing that way more than the nozzle ?

  8. #8
    My son (mohawk man) jeffsntx's Avatar
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    Quote Originally Posted by mrbtd View Post
    Maybe our angled plates are doing that way more than the nozzle ?
    I guess it could. If your plate angle is set up right on the verge, you might not need to trim up. My boat is set up for a good comfortable ride, even in the rough stuff, then I trim up to get a little more speed.

  9. #9
    flyboy's Avatar
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    if you can ride it at full up, you will go faster

  10. #10
    Moderator RX951's Avatar
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    I keep mine at neutral.

    * You want the rideplate to lift the hull, not the trim.

    In neutral it also allows it to minimize any bends in the thrust going out. You want the flow as smooth as possible.

    * also check your neutral position and make sure neutral is neutral. Measure from the end of the top of the steering nozzle to the inside end of the reduction nozzle both at 12:00 and 6:00. This ensures your neutral is set properly. I've seen ski set at neutral and the nozzle is actually just under it. And vice versa.

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