What airplanes do you fly,
What value is the Elevator Trim Effectiveness in flight model.cfg ??
Cessna 152.
elevator_trim_effectiveness 0.275
elevator_trim_effectiveness is not in an .xml file, but in flight_model.cfg
The default value is 1.51 for the C152
Yes, apolgies.
I know itās vanilla flavour is 1.51 and that is way too coarse.
What have YOU changed it to? That is the reason for this thread.
Iām after C152 flyers in TRW to say what value most represents reality.
Why?? is the question the Dev who wrote the values for this aeroplane put something rediculous as default.
This completely made that aeroplane a heap of junk. Buyers of this āGameā were immediately suspicious of all the other Flight Model values.
Ehm, that fully depends on the peripherals used, I think? Works fine with here?
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Iām not quite sure thatās a good way to go about solving fine/coarseness when adjusting elevator trimā¦ from the MSFS SDK:
- Elevator Trim Effectiveness: Scales the elevator trim deflection angle and maximum trim deflection angle as defined in [Elevator Trim Limit].
So youāre actually changing the max deflection angleā¦ do you run out of trim with default? I think the idea is to solve that problem, not sensitivity of the trim wheel.
If you want your trim adjustment to be more fine or coarse, the way I do it is by incrementing the elevator_trim simvar by say 1 rather than 8. The default keybind for trim up/down is indeed used a fixed value to increment/decrement, unless you hold it down which of course then this is accelerated.
If youāre not happy with the increment/decrement value used, you can define one yourself with Axis&Ohs for example, rather than increasing/decreasing the overall trim range & messing with the flight modelā¦
I see how changing this would in turn affect the sensitivity of the trim, however. Planes define their min/max deflection range, and MSFS increments them all the same regardless of this. So by increasing the overall range, you would increase the precision of the adjustment, and vice versa.
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Moved to User Support Hub Aircraft & Systems that is more appropriate.
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Trim adjustment in the Cessnas 152 and 172 is a wheel, grabbed by the mouse pointer and moved up or down. This is in VR.
Changing elevator_trim_effectiveness in flight_model.cfg makes the trim wheel movement and analogue pointer more like the real aeroplane.
0.262 gives a quite realistic trim adjustment. One āstepā of the trim wheel with the mouse wheel gives a movement of the analogue pointer a proportional movement to the real aeroplane.
There is no running out of range. About the same as the real aeroplane.
But thanks for your info on alternative methods 
I understand why this changes the sensitivity of the trim to produce the desired affect as you describe. Unfortunately this wonāt work for planes that are encrypted and is not really a solution rather a workaround for a problem the SIM has not addressed.
Maybe we should make this as a wishlist item? There has been prior discussion around this
If your peripheral for this is the mouse, yes there really is no way to solve this immediately without tweaking the flight_cfg. People on Xbox, and people with payware encrypted planes will not be able to do this. Modifying the flight model just to achieve a bit more sensitivity is a bit hacky and probably not what Microsoft intended. I donāt care about that however, and I agree that this tweak will address trim sensitivity.
It would be real nice to get a trim sensitivity adjustment added to MSFS natively.
Going back to your original post, Iām not sure youāll get a good baseline of values to try for this as a lot of us will be using different peripherals. How many lines do you have your mouse settings set to scroll? Things like that will change the effect of this value per-person. Unless someone is flying the same exact plane and adjusting trim using the same exact peripheral with the same lines per scroll setting, the value they use will not translate to your experience as well.
This value is already set to a value that allows the elevator trim to adjust the elevator to a max/min angle as it is in real life. This adds to a true and proper flight model. We shouldnāt have to trick the plane into thinking it has more elevator trim authority than it does in real life, just to produce a side-effect of more/less sensitivity for our peripherals.
the max elevator trim value is 16384. you can divide this by the max value displayed in the cockpit to determine a value to increment/decrement the trim by, with as much precision as youād like. In that way, you can ensure that one movement of the mouse wheel corresponds to the same trim increment/decrement for every plane. Sorry I canāt help but speculate on this as Iām sure its an issue that a lot of people want solved.
Your solution certainly works, but wouldnāt it be nice if MSFS had a simple ātrim sensitivityā adjuster?
If this method doesnāt work with other aeroplanes, there will surely be another methods to acheive the ends.
Experiment.
Note down the changes.
Record the outcome every change.
D M A I C.
I guess time will tell, if anyone else here posts a valueā¦