Hi all,
Has anyone been able to locate a rudder trim axis in the controls setup? All I can see is rudder trim left and right button/key bindings. I have a rotary on my throttle that I use for rudder trim in other sims and I’d like to do the same here.
Cheers in advance for any pointers
Mark
That seems to have worked but I’ll need to wait to try it out this evening. Thanks for your help!
Did you ever get this working? I recently decided to upgrade my trim setup from a single wheel to a triple trim wheel box, but can’t get anything working properly. Elevator trim has an axis in the options, which works great, but rudder and aileron I can’t get any of the binding options to work correctly
Unless you have programming software that that allows you to transform axes to… whatever it is that accepts those numerous “set x” functions present in the keybindings, the best you can probably do is tie the axes to buttons which you can do natively in MSFS without any programming.
It´s surprising how little support this game still has for binding various functions to axes. Beyond aileron and rudder trim, the cowl flaps lack one as do all the ever present heating controls (carburetor, cabin heat, cabin heat direction).
Yup. I’ve just spent ages trying various software to try and get these trim wheels to function for rudder trim and aileron trim. No success. I don’t really understand why there’s an axis for elevator trim, but not the other two? There’s option for “set” trim, but either native or with a 3rd party software, this option does absolutely nothing in the sim.
Sadly, I think I’ll have to give up and say tha buying the triple trim box was a waste of money.
Even tried to then use it for something else, like controlling camera translation, but those controls are also borked in the sim in terms of analogue axis inputs… you turn the wheel and it just flies off hard in one direction and never stops.
So im back to using just my single trim wheel as only the elevator trim can be properly set in the sim.
Something that is possible is that on some programming software you can set buttons as trimmers for axes. For example on base of my joystick there are these two rotary controllers that spin in infinite loop without stops. They are kind of akin to axes in use (just without end stops) but by default they generate button presses as you roll them. VKB´s programming suite (only works with VKB devices AFAIK, and in any case works by saving settings on the device so I don´t think it work across multiple devices) allows you to set them as trimmers for axes, either the two virtual axes the joystick has set up by default or the physical axes such as pitch and roll. The latter is software independent, since the software would simply think you are giving constant slight input on the primary axis depending on the trim settings.
So I think it´s theoretically possible for a middleware type programming software (the kind of thing you must turn on and then it works as filter between your hardware and the game software) that allows configuring software independent trimmers across multiple devices to exist, but I rather doubt it actually does.
Ok, just to update you… I’ve got this working now.
In case anyone else was trying to get an analogue control, like a physical trim wheel, to operate the trims in msfs.
It is possible, but I’ve only got it working using a paid software. Technically, there is a free demo version which you can use for 20 minutes to test things, and I guess you could just reopen it every 20 minutes… but for 13 quid odd, it’s probably worth buying.
Anyway, the key to getting it working seems to be the fact that axis and ohs lets you assign the trim wheel to the “set rudder trim” event and “set aileron trim” event… like you can in the sim… except in the sim, it limits the axis to 0-1…in axis and ohs, you can set the minimum and maximum value for the axis.
For rudder and aileron trim, I have set the min and max to -100 and 100 respectively. For elevator I set them to -16383 and 16383.
I don’t know why msfs operates this way, and I’m assuming that if they let you edit these values in the sim, you wouldn’t need a 3rd party software… but at least those pdf us with physical analogue trim wheel controls can now use them 
So, big thanks to lorbys axis and ohs. I now have a fully working trim box
Thanks Gleneagle, that does indeed sound like a very useful tool. Now when I tried to assign an analogue axis to rudder trim (I confess I skipped the RTFM routine 
) I got stuck and finally ended in a net framework error, that probably was the 20min timeout for the demo version. May I ask you for a screenshot and some dummy fit sentences what I need to do to get that one missing rudder trim axis?
load up the flight sim and ger onto a runway with your chosen plane.
start axis and ohs.
if it’s connected to the sim correctly, it should show the name of your plane at the top in yellow.
on the left side of the program, under assigned axis, click the little green plus symbol
-in simulator event, choose aircraft flight control events, then RUDDER_TRIM_SET
in device, choose your physical controller, e.g. i choose GF TripleTrimLite
in move joystick axis, choose the appropriate control, e.g. i choose slider 0… if you’re not sure which, you should be able to move the physical control here and it will select it for you.
in update value chose on change
in filter strength choose 1 and set axis min to -100 and axis max to 100
Click save
You will now see it in the assigned axis box on the main program window.
You may need to click reversed, try it in sim and see how it behaves. If the centre of your physical wheel position is not centre in this section, you can click and drag the red arrow head to move the centre position to match your physical controller… so line up your trim wheel with its dead centre position, then drag the red arrow head to meet he black line showing the position of the trim value.
If you’re likely to use the trim wheels for the same thing in other planes, you can goto templates and save the setup. Then when you fly a new plane you can apply that template to the new aircraft and not have to set it up manually again.
You can do the same thing for AILERON_TRIM_SET, and for ELEVATOR_TRIM_SET, although elevator needs an axis range of -16383 to 16383 instead of -100 to 100.
:: edit::
Missed a section-
