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  1. #1

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    gp1200r rolls back and forth (left and right) not the porpose...any fix?

    hey everyone!
    somewhere around the 15-20mph area, the ski will start this rolling. Its only a problem for pulling a skiier.but I've noticed that it happens at this speed no matter the situation...pulling,not pulling,or even being towed{f-ing powervalves}. I just put on some oldscool metal riva extended trim tabs; but i'm now porposing like no tomorrow, so they're probably coming off. ANY INPUT IS APPRECIATED; I ONLY WISH I KNEW EVERYTHING


  2. #2
    Banned User
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    What ride plate

  3. #3

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    Old riva, un modded

  4. #4
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by gixxedraider View Post
    Old riva, un modded
    probably a chine walk

    step the sponsons and see

  5. #5

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    already stepped.

  6. #6
    OLD # 7 IEGPR's Avatar
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    stop using a gpr as a tow boat

  7. #7
    "just sayin".. jetdave56's Avatar
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    Like wfo says ...chine walking ..left/right right/left...rocking off the keel...porpoising that's different..is trim up to one or two on the nozzle, that will make you porpoise..try neutral

  8. #8

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    Man I don't go that slow But I think they all will rock a little at low speeds. I mean 15-20mph is barely enough to stay on plane.

    Like WFO said...step your sponsons that will help. shimming your trim tabs might also.

  9. #9
    Banned User
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    from the bottom of the plate to the first angle going up where the big gap is on the right and left side, its catching water at low speed bevel that spot its about 1 inch wide on each side will minamize this. not swave enough to show a pic on the net.

  10. #10

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    Dec 2010
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    rocketman: more detail please.............
    this is the speed my friend and i use for ATTEMPTING tricks on my wakeboard. I'm using my raider now; but it has a flat hull(at the rear anyway) I want the v hull and extra weight of my gpr

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