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  1. #1
    alex29573's Avatar
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    How do i know if i have an upgraded charger?

    I was told i had a upgraded charger when purchasing the ski...

    i believed it because the ski boosts 12 psi at 8060rpms (gauges can llie though)

    im questioning if i really have a mini rude/et 137/rotax racing because i dont see the 3mm spacer and the wheel looks like a normal/cast wheel (not billet/gold)

    how cAn i find out 100% what i have??


  2. #2
    Avi8tor's Avatar
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    Post pics of it and these guys are good at identification. 12 psi @ 8060 if gauge is accurate = higher than stock charger.


  3. #3
    monaroman76's Avatar
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    What sort of boost gauge are you using? Digital? analog? Brand?

    Have you measured to see if it is a 137mm wheel? The Rude 1 produces very close to 12psi @ 8100 and the wheel just looks plain cast.

  4. #4
    alex29573's Avatar
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    How/what exactly do i measure?

  5. #5
    alex29573's Avatar
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    Does a rude 1 come with a spacer? What measurements does it have?

    I had a cheapo digital boost gauge that came with the ski that read 12.4 psi with the stock ecu at 8060 and now at 8560rpms i see 14.5psi. Ive switched to an analog autometer. I still get the same readings (harder to tell exactly-with the analog) but i know not to live by what the gauge says

  6. #6
    monaroman76's Avatar
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    A Rude 1 will not have a spacer but the wheel diameter will be 140mm. You need to pull the front cover off the s/c and measure it.
    The only 137mm wheel I can think of the doesn't run a spacer is the Les Cooke a-kit x impeller, but that is anodised from memory...

  7. #7
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    What ski?
    What visual mods?

    Take a few pics and post, especially of the charger inlet...

  8. #8
    alex29573's Avatar
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    its a 2008 rxpx, just took off the charger

    washers say RIVA 06 07

    so this means i dont even have an 08 up x charger?

  9. #9

  10. #10
    imp0ster's Avatar
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    Looks like a standard X with a chunk missing from one of the washers and a beat up backside. Someone has had a wrench on that nut.

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