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  1. #1

    Join Date
    Dec 2008
    San Jose, CA

    12x rudder centering issue

    I discovered a very strange issue with my 12x. Setting up a new pattern plane, I discovered the servo centering on the rudder servo changed slightly as Ichanged flight modes. Imade sure Ihade no mixing active and the flight mode enable had trim common between modes. I changes switch assignments and even turned off the flight modes and used only the rudderrate switch. The problem persistedin everycase. I then checkedanother plane I had been flying alllast season, and sure enough, it experienced the same issue.

    If both rates are set the same, there is no shift in center, only when there is a difference in throw and the larger the difference, then more the center shift.

    If this is some programming issue, I don't know where it is?


  2. #2

    Join Date
    Jul 2012
    Baldwin, MI
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    RE: 12x rudder centering issue

    At this point, I would open a new model and do a reset, then start programming manually in what I wanted. I had the elevators miss-porgrammed once and the trim only affected one side. After some head scratching, ... A reset and restart from scratch helped me stumble on the fix.

    Is there a sub-trim programmed in on the rudder?
    Sprint, P-90rxi, DX18, PBox Evolution
    AW 35% Extra, DLE 111, DX9, PBox Evolution
    AW Checkmate, DLE 55, DX8, SF Power Expander
    H9 60cc P-51, DA 60
    5 Helis & 2 PA Electrics

  3. #3

    Join Date
    Dec 2008
    San Jose, CA

    RE: 12x rudder centering issue

    Itried everything, the problem persists. I contacted Tony Stillman at Radio South, who tells me this is a calibration issue. It has probab;y been present all along, as Iwould never have noticed it in flight, only switching to different rates for snaps and spins.



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