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An Elevator Trim Question

Scheduled Pinned Locked Moved Bonanza Professional
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  • G Offline
    G Offline
    gregD
    wrote last edited by gregD
    #1

    I have a problem with my trim seeming to be way out. On takeoff, with trim set to 0, once i rotate i have to push hard on the yoke to stop the plane's ever increasing rate of climb.

    In climb (25/25), I need to set my elevator trim to between D 3 and D 6 to maintain 120kts/1200fpm (approx)

    When in cruise (25/25) the A/P winds the Elevator Trim down to between D 6 and D9 just to hold altitude.

    It doesn't happen at all on the Carenado F33 so maybe I have some setting/config issue?

    It is the same in msfs 2020

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    • F Offline
      F Offline
      Fishtorch
      wrote last edited by
      #2

      Came here to also post an observation but this seems related so I'll post here too.

      I use a Streamdeck to monitor trim values, which saves mousing down to look all the time.
      I use (A:ELEVATOR TRIM POSITION,DEGREES)

      I have noticed the following on the Bonanza TC

      The plane loads in with my Streamdeck showing 0 degrees elevator trim
      If I enable Settings > Flight Interface > Instrument Tooltips - that also confirms 0.0 degrees
      On the aircrafts trim markers, its showing around -1.5 degrees (the first D below 0)
      Moving the trim to 0 on the aircraft trim marker is showing me +2.1 degrees from the sim

      I can see the plane marker ranges from -15 to +15 ish and the sim is -20 to +20 degrees, so I would not expect the numbers to be perfectly align.
      However the fact that 0 is not 0 did throw me off.

      If I bind a button to "0 (>A:ELEVATOR TRIM POSITION, NUMBER)" it will reset as above - sim showing 0, trim marker at -1.5.

      So this would explain why when the OP sets their trim to 0 is getting a +2 degree climb

      Maybe this is how the aircraft really is??

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