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Carb balance.

in 912 / 914 Technical Questions 9 years ago

  • Re: Carb balance.

    by » 9 years ago

    Yes, its out of a cessna 340. as it goes to 75 inHg it can also be used to set the fuel pressure regulator on the 914.
    and MAP gauge from a twin can be used. It beautiful because the needles are on the same axis so its easy to get the carbs perfect.
      
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  • Re: Carb balance.

    by » 9 years ago

    Hi Ken,

    The electronic sync instruments can split a hair during the sync, but that goes away when you take the instrument off and hook the carbs back up.

    With gauges:
    You can tell which carb you want to adjust and by how much, tell which carb has a clogged idle or main jet, tell which carb is flooding, know before you even turn a screw if the cable on the throttle arm needs to be lengthened or shortened due to a larger split in vacuum you can see on the gauges. To me you can sync much quicker because you can see all this at a glance. As I turn an idle stop screw or the Bowden cable I can watch the needles come together.

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

      
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  • Re: Carb balance.

    by » 9 years ago

    Roger,

    Thank you for your input. Can you explain how you use the gauges to:

    (a) Tell which carb you want to adjust and by how much?
    (b) Tell which carb has a clogged idle or main jet?
    (c) Tell which carb (if any) is flooding?
    (d) Know if the cable on the throttle arm needs to be lengthened or shortened?
      
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  • Re: Carb balance.

    by » 9 years ago

    Hi Sanford,

    Here is an old article and a link to the Rotax online video. See if this helps.



    http://www.rotax-owner.com/en/information-reg/elearning-videos-reg/43-exp-si-912-018
    TheAnatomyofaCarbSync.pdf (You do not have access to download this file.)

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

      
    Report

  • Re: Carb balance.

    by » 9 years ago

    Roger,

    I checked the attached links but still could not find how can you tell if you have a clogged main or idle jet just by looking at the gauges.

    Miguel
      
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