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  1. #1
    Moderator Insanediego Joe's Avatar
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    Rotax racing super charger wheel #s

    What are you guys getting boost wise. The spitfire is showing 9 to 9.5 pounds. Good bad comments?


  2. #2
    JFizzleJR's Avatar
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    That's good. The best I saw was 9.1 but that's with the XS IC so the difference in boost could be the IC alone..Keep in mind I do have the riva rear intake though..

  3. #3
    Moderator Insanediego Joe's Avatar
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    Im also running a 4" intake. This damn ski is pulling so hard my arms are on fire after 10 laps around the bouys.

  4. #4
    friebe1's Avatar
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    9.7 @ 8300 here

    Steve

  5. #5

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    Guys, I don't know what Mark Underwood has done to mine but on cool days my digital boost reads 11.3 and on days over 80 it reads 10.9. I've duplicated it over and over again (I think I posted 11.3 as a main thread about two or three weeks ago.) I've even asked Mark if the boost gauge could be wrong due to the said performance that the wheel is suppose to put out. My boat has pretty much everything you would want on a Rec. boat without the worry of reliability. If we can figure this out maybe we can duplicate on other boats. Any ideas why? Sorry- 8550 rpm.

  6. #6

    WOW

    What Rpm's Are U Turning?

  7. #7
    whats the difference between the RR light wheel and the normal RR wheel, any HP differences?

  8. #8
    JFizzleJR's Avatar
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    smc, I thought you have the "New" rotax wheel with the spacer?

  9. #9
    Quote Originally Posted by smc View Post
    Guys, I don't know what Mark Underwood has done to mine but on cool days my digital boost reads 11.3 and on days over 80 it reads 10.9. I've duplicated it over and over again (I think I posted 11.3 as a main thread about two or three weeks ago.) I've even asked Mark if the boost gauge could be wrong due to the said performance that the wheel is suppose to put out. My boat has pretty much everything you would want on a Rec. boat without the worry of reliability. If we can figure this out maybe we can duplicate on other boats. Any ideas why? Sorry- 8550 rpm.
    Quote Originally Posted by JFizzleJR View Post
    smc, I thought you have the "New" rotax wheel with the spacer?
    I bet that's what he has.

  10. #10

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    All I know is that I have the latest wheel. Is this not what we are talking about?

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