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  1. #1
    DanSVHO's Avatar
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    Porpoising on flat water. 19í Fx

    Iím trying to figure out what the cause of my porpoising. As soon as I hit pass 80 itís bouncing up and down like crazy. I have deans plate and a pump wedge. Thinking the new hulls donít like the wedge? Iím sure this is killing my speed also. I hit 81 at 8720. I havenít sealed my pump yet if that may cause it. Any suggestions?

  2. #2
    Click avatar for tech links/info K447's Avatar
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    If you remove the pump wedge does the porpoising reduce?

  3. #3
    DanSVHO's Avatar
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    Haven’t tried yet. It’s easy but I have to re-align trim, steering again I will just take it off and see if it helps.

  4. #4
    DanSVHO's Avatar
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    Didn’t help still there ;( my old ski didn’t do this! Ugh.

  5. #5

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    I would try some adjustable sponsons. Give it time and people will figure out the new hull.

    Robert

  6. #6
    DanSVHO's Avatar
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    I agree. I think there are some quarks to work out. How would sponsons add speed though? I think it’s still the plate. I was told that an old model plate is better on this hull.

    Quote Originally Posted by rcrisafulli View Post
    I would try some adjustable sponsons. Give it time and people will figure out the new hull.

    Robert

  7. #7
    im glad I went with a 16 fx instead of buying a 19 fx...at least for now


  8. #8
    Quote Originally Posted by DanSVHO View Post
    Didn’t help still there ;( my old ski didn’t do this! Ugh.
    try putting some shims on the back 2 bolts on the ride plate...a finder washer to start with see if that helps then adjust the think ness from there

  9. #9
    Rook87's Avatar
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    He's suggesting sponsons for the porpoising issue

  10. #10
    Quote Originally Posted by Rook87 View Post
    He's suggesting sponsons for the porpoising issue
    shimming the ride plate will work I had a 04 rxp with a jims cut plat once it hit 80 it would porpoise...shimmed the ride plate and it would run 82.6 with no problem and its a lot cheaper.

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