Home Forums TaG Rotax Max Rotax Evo Update Micro Max

This topic contains 8 replies, has 5 voices, and was last updated by  James McMahon 2 years, 10 months ago.

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  • #40383

    Vincent Ciolino
    Participant

    I was curious if anyone has made the update if so, do you see an improvement in performance?

    #40388

    Christian Fox
    Participant

    I don’t know of anyone with the new parts yet, but the HP is up for every motor in Evo form. Biggest difference will be in Micro (lowest HP, biggest % gain). Micro is going from 6.8 nominal HP to 8.0 HP, an 18% increase. Micro is the only engine class that Rotax claims will have a performance gain (which is strange given Hp is up in all the evo motors). Hope that helps.

    #40410

    Mark Parker
    Participant

    does the few hundred dollar update make them identical or does the new motor have new internals?

    #40418

    Christian Fox
    Participant

    Mark, that’s the big question. According to Rotax, the upgrade will make them equal. Internally, the piston is slightly lighter, the con rod has a new coating, and the crank bearing is slightly different. A couple of engine builders I’ve spoken too think a good, upgraded Micro will still be good relative to an Evo. I suspect a high $$, part-matched Micro franken-motor that kicks ass now will still kick ass when upgraded. The big question is the coil; you don’t get the new one in the Micro upgrade. The timing hasn’t changed, so it’s not a required upgrade, but Rotax claims the throttle response will be better.

    #40701

    Clark Hadden
    Participant

    Hello, from friends in the Europe I heard it’s not any quicker… It’s slower…

     

    fyi!!!!

     

     

    #40731

    Christian Fox
    Participant

    Clark, that is interesting. Do you know if your friends were doing a before upgrade/after upgrade comparison with a specific Micro, or were they comparing 2 completely different motors (a new Evo Micro vs. an older Max). Because slight motor variation is so magnified in Micro, you really need to do a before/after with one motor.

    #40800

    Mark Parker
    Participant

    I’d like to get a day with a micro pro at either track in the Carolinas.

    #40837

    James McMahon
    Participant

    It depends on the packages you are comparing. Reports are that senior can be nip and tuck, but Micro like Christian said is another story.

    Austrailia and the UK have postponed introduction it until 2016 and I believe at least one US karting organization will follow suit.
    France are running Evo as a separate class it seems.

    #40838

    James McMahon
    Participant

    healthy thread going over at karting1: http://www.karting1.co.uk/forum/viewtopic.php?t=17247&postdays=0&postorder=asc&start=0

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