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  1. #1

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    Stage Three Results (Riva)

    We just finished installing a stage three on my RXP.
    Maximum speed was 77mph at 8500rpm.

    Keep in mind that this was done with the stock venturi and GPS closed in the the middle drawer.

    Do you guys think that if I put the 82mm ring will kill my speed? Riva claims 80+ with the 82venturi and 8400rpm. I also have 4" intake.
    Thank for the help
    Hec

    What is wrong here?


  2. #2
    Site Admin Green Hulk's Avatar
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    Run the 81mm ring and pitch the prop to allow for 8500 RPM's

    What is the air/water temp? Elevation?
    Do you have all the components of the kit installed? Which prop are you using?

  3. #3
    BOOSTED's Avatar
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    I think the Stage III should be good for 80+

  4. #4

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    I forgot to tell that we repitched 1mm to get 8500 with the stock venturi.
    what is the maximum i need to pull with the 81mm to get that rpm. Vibrartions?
    Thanks Jerry

    water 76 degrees
    82 out side temp
    sea level

  5. #5

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    15/19 r skat three blade

  6. #6
    Site Admin Green Hulk's Avatar
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    you will probably need to take out 2 mm.

  7. #7
    Jarrett's Avatar
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    What's going on? This is two 76-77 MPH Riva Stage3 RXPs now?

    What were the:

    Air temp?
    Water temp?
    Fuel level?
    Altitude?
    Rider weight?

  8. #8
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by Hecyan View Post
    water 76 degrees
    82 out side temp
    sea level
    Hecyan, how much do you weigh?
    What was rider position when doing your speed runs? Superman?
    What were water conditions?

  9. #9

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    weight is 175, did sit up run and superman run, water has flat. also 2 rxp's were tested same result.. speed was 77.6 doing superman and 77.0 sitting up on the ski. both ski's about the same 77.6 - 77.4. water was flat with wind behind me. going take one of the skis out tomorrow to re test with the 82mm ring .... also 3-4 bars of gas 8500rpm's and blink 8550
    Last edited by Hecyan; 10-25-2006 at 09:08 PM.

  10. #10
    mxl16's Avatar
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    do u have rideplate holes filled. intake grate flush with rideplate and holes filled?

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