92 Ultra porpoising issue
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92 Ultra porpoising issue

  1. #1
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    Default 92 Ultra porpoising issue

    I have an open bow jet boat. When you put the diverted up to throw a rooster tail the boat porpoises really bad. Any ideas? Thanks in advance, Dick

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    cj812 ralph brunt's Avatar
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    put diverter down

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    Senior Member ontheNOS's Avatar
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    X2

    Although it even gets a higher roost when you have everyone sit in the open bow while its up :-)

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    gn7
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    Gee guys, I put my diverter in the full up position and the boat rides like shit. Any ideas how I can fix this??

    Try ontheNOS's idea. Throw everybody up front. If its a closed bow, stop by Home Depot and pick up 10 bags of sand and throw them under the bow. That's will help.



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    I was thinking maybe a droop may help? Or maybe adjust the ride plate, what is a good baseline setup for one of these boats. With people in the front it just about bucks them out.

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    You could always flip the boat and bondo about a 3" hook into the bottom.

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    I have 90 21' ultra open bow with a 502, droop, diverter, ride plate and is smooth as silk at 70, and with diverter full up it is still smooth
    Last edited by limited; 09-02-2013 at 07:29 PM.
    1990 ultra 21' open bow. 509, American turbine Jet

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    gn7
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    Quote Originally Posted by RACRX2002 View Post
    I was thinking maybe a droop may help? Or maybe adjust the ride plate, what is a good baseline setup for one of these boats. With people in the front it just about bucks them out.
    Have you tried more people AND sand bags? I know lowering the diverter was mentioned. I assume that's out of the question.

    Quote Originally Posted by 67weiman View Post
    You could always flip the boat and bondo about a 3" hook into the bottom.
    OK, now your are just getting creative



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    Quote Originally Posted by limited View Post
    I have 90 21' ultra open bow with a 502, droop, diverter, ride plate and is smooth as silk at 70, and with diverter full up it is still smooth
    what do you recommend as a good starting point on the rideplate? Mine is stock motor just some bolt on stuff.

    Quote Originally Posted by gn7 View Post
    Have you tried more people AND sand bags? I know lowering the diverter was mentioned. I assume that's out of the question.



    OK, now your are just getting creative
    it is driven with it down but I like the look at times and would like it to settle down a touch. Sandbags are definitely out.

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    try a pump wedge

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    Senior Member andyc's Avatar
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    Default "down in front"

    How about a pix of the ass end of your boat.

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    Lets see, form over function or function over form. If one wants to LOOK good while being passed by a "Stupid fishing boat", I guess one has their priorities. I always pick on the Ricky Roosters first.

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    gn7
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    You know what they say, if it won't go, shoot the biggest rooster tail you can and make it LOOK fast.



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    Quote Originally Posted by gn7 View Post
    You know what they say, if it won't go, shoot the biggest rooster tail you can and make it LOOK fast.
    gn, those roosts serve a specific top secret purpose. I could explain it to ya, but i'd have to kill ya....

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