Did some more sampling and investigation. In addition to the Jenny, the pitch trim is reversed when using the peripheral trim wheel axis on the following planes in my hangar:
Junkers Ju-52 (Microsoft / Oliver Moser)
Savoia-Marchetti S.55 (Microsoft / Mike Johnson)
Progressive Aerodyne SeaRey (FlightSim Studios Ag)
I also purchased the Dornier Wal and Junkers F13 by Oliver Moser but haven’t installed those yet to check if they are also affected. However, I did reach out to Mike Johnson since he has been so responsive in supporting the S.55, and he confirmed this behavior with a great technical explanation through DM, reproduced with permission below:
Yes, this is a known issue with trim wheels and unfortunately I don’t think this is something I can fix. I spent days and days trying though.
The full explanation is a long one, but basically it comes down to a bug deep in the sim’s screen space and drag direction code. If a control is roughly in front of you in the cockpit everything works fine, but when something is placed quite low down, on the floor etc, and almost directly under the camera (like the S.55’s trim handle) the sim can get confused about what is “up” and “down” when dragging. It sees such motions as both forward and back as well as up and down.
Basically it came down to either having trim wheels increment in reverse, or having VR controller and Xbox controller drag not work at all (they would jitter like crazy or just not function). Unfortunately the trim wheel controllers had to lose this one. There was just no way to reconcile them all.
The list of control schemes that have to work on a single lever and share the same code like that are kind of insane. In this case it had to work for: mouse drag, mouse wheel, xbox hold and increment, xbox hold and drag, VR controller hold and drag, and VR controller hold and increment.
I have reported this bug long ago, but I think it’s pretty far down the list for Asobo. I haven’t checked out the other aircraft you mentioned, but I’m guessing they ran into the same issue. If you have FSUIPC or a similar control injector perhaps you could reverse your trim wheel output. I know FSUIPC can do this on a per aircraft basis.
I’m on Xbox so can’t reverse the pitch trim axis on a per plane basis using FSUIPC. If this bug is as deep and unaddressable as the “horizon line visible through mountains” issue, then perhaps Asobo can at least allow us to set and save the reversed-or-not-reversed axes states for individual aircraft (hopefully camera settings as well) in FS2024?