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  1. #1

    ultra 250/rpm's-top speed??

    I was riding with my friend and he just picked up an ultra 250 and it has about 10 hours on it. He let me try it and at top speed I am only seeing about 6950 rpm's and 62mph!! Is this right? Is there some kind of computer break-in restriction at some certain hour?? Is this normal as far as rpm's and top speed?? I expected much more from that ski..


  2. #2
    Beagleman62's Avatar
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    Quote Originally Posted by monsoonmadness View Post
    I was riding with my friend and he just picked up an ultra 250 and it has about 10 hours on it. He let me try it and at top speed I am only seeing about 6950 rpm's and 62mph!! Is this right? Is there some kind of computer break-in restriction at some certain hour?? Is this normal as far as rpm's and top speed?? I expected much more from that ski..
    That RPM does seem very low. Depending on the air temp & humidity, you should be turning at least 7600 or so. That speed number is also low. Some 250's run faster than others stock but even on the low end your buddy should be running 64-65.
    Are the speed numbers from GPS or the speedometer?

  3. #3
    they are from the speedo. I am sure that its not right. I have a stage1 RXP and I raced a few ultra250's and beat them by about 3mph. This ski I am blowing right by!! Is there a computer break-in sensor that restricts the motor until 15 or 20 hours?? Could there be an exhaust leak somewhere??

  4. #4
    Mitchlguzin's Avatar
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    Unhappy

    Could be a hand full of different things BUT its not a ECU thats restricting the performance...

    It pisses me off that everyones is registering 60+ mph while mine only reads 55mph... I have the wheel lubed and spinning freely...

    I NEED TO GET A GPS AND SEE WHAT ITS REALLY DOING...

  5. #5
    Check the oil it is probably overfilled also check your plugs for fouling.

  6. #6
    mitch did you move you wheel down a little bit

  7. #7

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    GPS'd at 1:00.Today...

    I got 64.6 and 64.8 mph. That was with 1/2 tank of fuel....99 degree heat and 112 Heat Index...Way too hot today..I UNFORTUNATLY COULD ONLY COULD GET 7570 RPMS out of her. Jeff

  8. #8
    Kiwi Racer's Avatar
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    Im doing 7850 rpm @ 69.0 mph GPS
    Very cold here thou.

  9. #9
    Beagleman62's Avatar
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    Quote Originally Posted by Kiwi Racer View Post
    Im doing 7850 rpm @ 69.0 mph GPS
    Very cold here thou.
    That's about the rpm's I turned back in the spring.

  10. #10
    thanks everyone. I knew there was something going on with that ski.

    Now the fun starts...

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