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Thread: altitude

  1. #1
    West Texas RXP skoepp's Avatar
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    altitude

    Can some one tell me if there is a conversion to figure difference in altitude will relate. I ride at 3,000 and 2,200 ft. Today rode at 3,000ft. with 48 water, 44 air with 95% humidity. I yield the mph in sigs. I am sure the fog was not helping my speeds.

    You think on good day and free mods could be 2 m,ph faster?


  2. #2
    Site Admin Green Hulk's Avatar
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    I don't know of a conversion table, but i do know that the guys that ride at 3000' elevation usually loose 300 rpm's.
    What you need to do is depitch your impeller to get the RPM's up.

  3. #3
    West Texas RXP skoepp's Avatar
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    I was running at 8,000 rpm,s today at 73.1. I just brought the skis home from Dallas. There the prop was set and was 8150 with a little less speed.
    Will free mods make 1 to 2 mph or is not possilble? Also how much top end will get with IC? What about less humidity, will it give more speed.

    I appreciate anyones comments

  4. #4
    Site Admin Green Hulk's Avatar
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    Just filling in the ride plate holes is good for 1 mph.

    High humidty kills power.

    Adding an external intercooler delivers cooler denser air to your engine which will increase power/top speed.

  5. #5
    West Texas RXP skoepp's Avatar
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    Thanks for the reply. I am going to fill ride plate holes and on a better day without humidity I will retest. Its possible the adding the IC will get my rpms back to 8150 without changing the prop any at this time.

  6. #6
    vidbuster's Avatar
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    Here is a thread I started about High Altitude Performance

    http://www.greenhulk.net/forums/showthread.php?t=21295

    I talk about results more on page 2

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