1998 SXI Pro porpoising
pxctoday

» Log in

User Name:

Password:

Not a member yet?
Register Now!

» Find OEM Parts

» Jobs

» wallpapers

Page 1 of 2 12 LastLast
Results 1 to 10 of 14
  1. #1
    PWCToday Newbie
    Join Date
    Aug 2020
    Location
    Edmonton
    Posts
    21

    1998 SXI Pro porpoising

    Hey all. I just finished breaking in my rebuilt motor. Everything is great until you reach past half throttle. The ski instantly starts bouncing. Ive tried riding as far forward as possible while standing, leaning over the pole kneeling. Im 61 and 230 lbs and the ski just seems really unhappy with my weight anywhere. It appears to have Slightly cut down hull extensions And a long ride plate that was cut and then re-welded to full length. It appears the front also has flat sheets bonded to the sides ( maybe it had sponsons and they were removed). Any suggestions on how to tame the porpoising?

    thx,
    -Trent

    C7E76484-655C-4E84-B436-F9B09AAB54E5.jpeg

  2. #2
    Attention ***** PWCToday.com Is My Home Away From Home JonnyX2's Avatar
    Join Date
    Jun 2006
    Location
    Sin City USA
    Age
    57
    Posts
    30,354

    Re: 1998 SXI Pro porpoising

    Does the pump have the 2 wedge installed? Should be fat side up.
    Quote Originally Posted by Firebird A/C&Heating View Post
    OMG.....Rules for 550 vintage ski class...550 ski riders do not conform to any kind of rules. That is why you are riding a 550 ski in the first place. Rules suck....
    PS...the rule book will be in my 550 pump
    Quote Originally Posted by WB1994
    Listen , stop your cryin' , its only an X2.

  3. #3
    PWCToday Newbie
    Join Date
    Aug 2020
    Location
    Edmonton
    Posts
    21

    Re: 1998 SXI Pro porpoising

    Yes, it has the wedge installed with the fat side up. I double checked it when assembling.

    -Trent

  4. #4
    Attention ***** PWCToday.com Is My Home Away From Home JonnyX2's Avatar
    Join Date
    Jun 2006
    Location
    Sin City USA
    Age
    57
    Posts
    30,354

    Re: 1998 SXI Pro porpoising

    Well you have all the anti-porpoising items on your ski, wedge, extended plate, hull extensions. Only other thing I can think of to help you would be 0 bars to put you further up in the tray. The rest will be tray time to get your riding position in best form. A full tank of gas helps a bit too.
    Quote Originally Posted by Firebird A/C&Heating View Post
    OMG.....Rules for 550 vintage ski class...550 ski riders do not conform to any kind of rules. That is why you are riding a 550 ski in the first place. Rules suck....
    PS...the rule book will be in my 550 pump
    Quote Originally Posted by WB1994
    Listen , stop your cryin' , its only an X2.

  5. #5
    PWCToday Newbie
    Join Date
    Aug 2020
    Location
    Edmonton
    Posts
    21

    Re: 1998 SXI Pro porpoising

    In retrospect, I’m now questioning the wedge installation. I’ll have to check it tomorrow to verify. Thanks for the help.

  6. #6
    PWCToday Guru ImpactSportsTV's Avatar
    Join Date
    Jul 2003
    Location
    San Clemente, CA
    Posts
    317

    Re: 1998 SXI Pro porpoising

    Also, you would be surprised what a difference a -2" length handlepole makes on those skis

  7. #7
    PWCToday Newbie
    Join Date
    Aug 2020
    Location
    Edmonton
    Posts
    21

    Re: 1998 SXI Pro porpoising

    I’ve been thinking about fabricating a shorter pole from aluminum.

  8. #8
    PWCToday.com Is My Home Away From Home SxiPro's Avatar
    Join Date
    May 2005
    Location
    Right here
    Posts
    12,852

    Re: 1998 SXI Pro porpoising

    Ride with the the bars ****ed just the tiniest bit as opposed to dead nuts centered. For some reason that always worked on mine and all I had was a Worx scoop grate and a Dominator extended ride plate.
    Changes aren't permanent, but change is.

  9. #9
    PWCToday Newbie
    Join Date
    Aug 2020
    Location
    Edmonton
    Posts
    21

    Re: 1998 SXI Pro porpoising

    Damn. The wedge is correct. CCA51412-B483-445A-A16D-96BEEB0B3058.jpeg
    Last edited by TrentO; 09-08-2020 at 08:19 PM.

  10. #10
    Attention ***** PWCToday.com Is My Home Away From Home JonnyX2's Avatar
    Join Date
    Jun 2006
    Location
    Sin City USA
    Age
    57
    Posts
    30,354

    Re: 1998 SXI Pro porpoising

    You can also double up on the wedge, or try shimming the pump with a washer under the tabs on each of the rear bolts.
    Quote Originally Posted by Firebird A/C&Heating View Post
    OMG.....Rules for 550 vintage ski class...550 ski riders do not conform to any kind of rules. That is why you are riding a 550 ski in the first place. Rules suck....
    PS...the rule book will be in my 550 pump
    Quote Originally Posted by WB1994
    Listen , stop your cryin' , its only an X2.

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBadvanced CMPS v4.2.0