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Thread: sponsons

  1. #1
    Ramps's Avatar
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    Exclamation sponsons

    ok,
    ground down my stock ride plate and put my sponsons back to factory. GPS best speed this weekend but porposing like crazy..What did i do, when I got home I re-stepped my sponsons should that ? Was that the culprit???


  2. #2

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    Cool

    ya think,you change angle of ski ,jack up sponsons and have that angled pump cone,that poor ski is trying to dance on it's tail!
    start by changing one thing ( I'd go for the cone first)

    later cd

    PS notice my avatar-he's what'd by Nevada police( sheep slut)

    cd

  3. #3
    Ramps's Avatar
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    I will try cone next thanks for all your input...

    later, Ramps....

  4. #4
    OLD # 7 IEGPR's Avatar
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    Quote Originally Posted by Ramps View Post
    ok,
    ground down my stock ride plate and put my sponsons back to factory. GPS best speed this weekend but porposing like crazy..What did i do, when I got home I re-stepped my sponsons should that ? Was that the culprit???

    Step the sponsons.

  5. #5
    Quote Originally Posted by IEGPR View Post
    Step the sponsons.
    +1, step the sponsons. You need sponsons stepped to run an angled plate. Don't waste your time with the pump cone. If it still porpoises, shim the trim tabs down a bit and or reduce the angle of the plate.

  6. #6
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    Do yourself a favor and look up Danny's sponsons. The backing plates are stepped. You improve turning and stop bounce...

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  8. #8
    Ramps's Avatar
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    Exclamation Sponsons

    Thanks mrbtd
    I ended up shimming my ride plate a hair and stepping sponsons lost a little top end but got rid of the porpoising...GPS at 69.6. Not bad for an 01' w/my mods..

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