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Thread: RXP Speed

  1. #1
    steved's Avatar
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    RXP Speed

    Looking for any ideas ?

    Just Back from a run out in the sea must be below 10degC great day .
    I have a 2005 RXP full stage 1 riva kit with reverse bucket mod and rear exhaust .
    No VTS extension or filled in ride plate or skegs fitted.

    First time with a GPS up the Creek around the Island and only 68 Mph in both directions pulling 8100 one way and 8150 the other . Ski running fine but where is the speed any ideas would be helpfull , will fit Skegs fill in ride plate holes and fit the vts extension in the next couple of weeks .

    Also have a set of Jerry's SC washers to fit next week but if the Ceramics were slipping it would not be pulling 8150 ??
    Last edited by steved; 12-09-2006 at 12:28 PM.


  2. #2

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    Quote Originally Posted by steved View Post

    Also have a set of Jerry's SC washers to fit next week but if the Ceramics were slipping it would not be pulling 8150 ??

    You will still be pulling max RPM if the clutch is slipping.

  3. #3
    HOSS's Avatar
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    I never did. I would be from 7800 down to 6800 with both clutches gone.

  4. #4
    Moderator Franko's Avatar
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    Your clutch is fine if you are seeing 8100 RPM. There are many variables that affect speed other than water temps. What is your altitude? Rider weight? humidity? Air temp? Where is your trim set? what rider position - on the seat, crouched back or superman?

  5. #5
    Hydrotherapy's Avatar
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    Quote Originally Posted by Franko View Post
    Your clutch is fine if you are seeing 8100 RPM. There are many variables that affect speed other than water temps. What is your altitude? Rider weight? humidity? Air temp? Where is your trim set? what rider position - on the seat, crouched back or superman?
    will answer for steve as he may be flying back out to the states and will read when he is there..
    altitude.... sea leval
    rider weight.... more than me 13 stone +
    humidity... 71%
    wind... 8 mph max dropping to 3 mph
    preasure... 1020 mb
    water temp.. 8 celsius
    air temp....4 celsius felt more like -4 while ot on ski
    trim... netural
    no superman sitting but head down and butt up

    guys please help him but not too much as its took me $$$$$$$$$$$$$$$$$$$$$$$$ to get in front of this rxp on my gpr..

    keep well bud see you for beer when you about next...damm buy a dry suit you still make me feel cold today
    Last edited by Hydrotherapy; 12-10-2006 at 11:55 AM.

  6. #6
    steved's Avatar
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    More help from you RXP owners

    Thanks Bud
    Will keep in touch 13+ Stone sounds good thanks .
    More speed required not a dry suit , extra drag !!

    Need more help from you RXP owners got to keep in front of these Yams

  7. #7
    Hydrotherapy's Avatar
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    Quote Originally Posted by steved View Post
    Thanks Bud
    Will keep in touch 13+ Stone sounds good thanks .
    More speed required not a dry suit , extra drag !!

    Need more help from you RXP owners got to keep in front of these Yams
    more evidence that seadoo and yamaha can get on

    please guys not to much help dont want to be seeing the back of the seadoo unless its on its trailer..

    any one know how to make him slower i will sort you out $$

  8. #8
    how much fuel in ur tank most check at 2 bars most of these top speed runs r done on glass water if ur running on the sea ur probley dealing with choppy conditions if u r there's ur speed i'll lose 5-10 mph in choppy waters glass water 1 bar of fuel hanging off the back cool air & water 72.2 mph at 8150 rpm stage I & riva vortec s/c with stock s/c best 71.7 mph at 8100

  9. #9
    steved's Avatar
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    The run was done with 3/4 Fuel in the tank the water was glass like but the tide was coming in and I am a large chap not your usual jet ski build but the speed to me was still low but not sure . Does the VTS rod make a big difference to lifting the front out of the water . where is the best trim for speed with the VTS rod ?

  10. #10
    i don't run a wedge trim up 1 or 2 bars from the top if u got the wedge i would get the vts rod it will help u on hole shots other than that i don't think the vts rod will help ur top speed try ur ski at 2 bars of fuel and see what u get on gps
    Last edited by yellow jacket; 12-13-2006 at 04:19 PM.

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