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Hello everyone, new to this site and the 912. I bought this 2010 RV12 this week and wow what a plane. Me and the previous owner went out and did some get acquainted aircraft flying. We did many T&G and other feel and test flying. On our last landing and still rolling the 912 cut-off. It started back immediately. The RPMs with the throttle pulled fully back was like 1290. I removed the cowling and all looks good. I don't have the small brass throttle stops mentioned on this forum.

My thought is the Throttle cable has stretched over time and the idle screw needs adjusting.......

Picture of my carbs attached.

Thanks

9343_1_20220726_225815881_iOS.jpg (You do not have access to download this file.)
  • Re: 912 ULS cut-off on landing roll

    by » 3 weeks ago


    Your idle rpm is way too low so the engine just dies. Sync the carbs and reset the idle rpm between 1700 - 1800. Vans uses 1650, but still a too low. Plus never sit and idle at any of those lower rpm’s. You’ll beat the gearbox up with the 100 hp compression. The lower idle is okay for shutdown.

    Do not just turn the carb idle stop screws to get a higher rpm. You need sync gauges to do this to make sure both carbs are balanced properly.


    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell


    Thank you said by: RotaxOwner Admin

  • Re: 912 ULS cut-off on landing roll

    by » 3 weeks ago


    The RV12 engine stopped on the landing roll with the throttle closed. Can you not pull the throttle all the way out on landing? I think when I lost the windmill effect, It cut-off. 

    What kind of sync gauges do I need? I think I can do the sync. I'm in Foley, AL near "Gulf Shores".....know anyone in my area.

    Thanks - Roger

     


  • Re: 912 ULS cut-off on landing roll

    by » 3 weeks ago


    Ronnie Smith at South Miss.Light Aircraft. Lucedale Miss. He and his son Morris are first class.


  • Re: 912 ULS cut-off on landing roll

    by » 3 weeks ago


    Jim -  thanks. Nice to have someone close to me. I tried calling but, I assume they are closed until Monday. I hope they make house calls.


  • Re: 912 ULS cut-off on landing roll

    by » 3 weeks ago


    Wallace Young wrote:

    The RV12 engine stopped on the landing roll with the throttle closed. Can you not pull the throttle all the way out on landing? I think when I lost the windmill effect, It cut-off. 

    What kind of sync gauges do I need? I think I can do the sync. I'm in Foley, AL near "Gulf Shores".....know anyone in my area.

    Thanks - Roger

    You can pull it all the way back if the idle rpm is set correctly. Yours is way too low.

    Get with someone to show you vacuum gauges and how to use them.


    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell


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