Tutorials : How to set up Cross Trims
Cross Trims
This article shows how to change the normal action of a trim lever, so it affects a different control. In the example, the Rudder trim lever (LH stick) will be used to trim the Aileron control (RH stick).
Solution
Assign Aileron to C, and Aux 6 to trim lever TA.
Stick | Control | Remarks |
C | AILERON | Aileron = rt stick |
TA | AUX6 | Aux 6 = left trim lever |
We'll use a servomix to add the Aileron signal + the trim signal.
Mixer Schematic
Servomix "my_xtrim" |
--------------- | | Aileron --> | Servomix | AUX6 --> | "my_xtrim" |--> Aileron Servo | | --------------- |
my_xtrim set up
my_xtrim | ||||
Input# | Control/Mixer | Switch | Curve | Remarks |
1 | AILERON | ON | -100/0/100 | Aileron |
2 | AUX6 | ON | -range/0/+range | Trim |
Notes
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Enhancements
Add Trim Offset
A trim offset facility allows the trim lever to be brought back to the centre following flight tests. Add a third Aileron input as follows:
my_xtrim with 3rd input for "trim offset" | ||||
Input# | Control/Mixer | Switch | Curve | Remarks |
1 | AILERON | ON | -100/0/100 | Aileron |
2 | AUX6 | ON | -range/0/+range | Trim |
3 | FIXED VAL | ON | offset | Trim Offset |
Notes
|
Encapsulate in Multimix
By using a multimix instead of a servomix, you can plug this behaviour into any servomix requiring Aileron + Trim.
Notes
The effect of the trims is NOT reduced at the end points, thus they work like standard (not centre) trims.