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Hello, I have been flying my aircraft for now 20 hours, I notice in the last couple of flight that  my fuel flow transducer FT-60 thru the G3X reads about 1psi lower then my analog gauge in the console, in a climb it when down in the red to 2.4psi but the analog read 3.4psi, switching on my electric pump added .5psi on both. On Static run with 4000rpm fuel flow is always above 4.5psi on both. 

Question:

Is there calibration to do the FT-60?

In a climb is it normal for the fuel pressure come down in the 3.4psi range? 

Aircraft is a TL3000 with 700h

 

Thanks.

  • Re: Fuel pressure reading 912 uls

    by » 4 months ago


    A lot of people seem to complain about this especially on low wings. Vans RV12 and Sting owners always seem to complain.I know yours is a high wing. I haven't heard any of them complain about engine issues in flight though. I've tried a few things, but never really seemed to totally fix the issue. I have installed higher pressure and volume electric pumps which did help on the low wings. I know it's a little unnerving, but with your 2.4 psi pressure you should be okay. I have run engines with a lot lower pressure and no stumbles.

    Maybe some one here will have a good fix.


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


  • Re: Fuel pressure reading 912 uls

    by » 4 months ago


    thank you for the information, should I turn on my backup electric fuel pump (facet 40288 cub pump) when on take off and climb? 

     

    Thanks.


  • Re: Fuel pressure reading 912 uls

    by » 4 months ago


    EI's FT-60 is not to be calibrated (68K per Gal), unless installation configuration calls for it. I wonder how you use it to measure fuel pressure. It causes fuel pressure drop while in line, but very low in 912ULS fuel consumption.


  • Re: Fuel pressure reading 912 uls

    by » 4 months ago


    Alain Levesque wrote:

    thank you for the information, should I turn on my backup electric fuel pump (facet 40288 cub pump) when on take off and climb? 

    Thanks.

    YES! - Use your boost/"back up" pump for all take off's & landings. These two periods are the most critical for every flight. An engine failure/loss of power at these times may kill you.

    Turning on your boost pump before every take off & landing, should be a permanent part of every Rotax drivers actions. 

    On take off, leave your boost pump on until safe (turn back) altitude has been achieved.

    On landing, pump on as part of down wind pre landing checks, do not turn off until you have left the runway.


  • Re: Fuel pressure reading 912 uls

    by » 4 months ago


    I am confused; the FT-60 red cube is a fuel FLOW transducer, not a fuel pressure instrument. Where are you reading fuel pressure?


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