Servo calibration "failed"

[CJW]

Hi everyone, first post here!

I recently bought a second hand Jabiru. I struggled to have the roll servo engage in flight and someone suggested I recalibrate/setup the servos.

After the calibration step where one is supposed to move the stick through the range of motion, the Skyview displays a message that "calibration failed" as the range of motion through the roll axis is "less than 20 degrees".

What would be the reason for this message? All I can think of is perhaps that the shear pin gave way and now the motion through the stick is not transferred to the servo?

Regards
CJW

 

[William_Ince]

BINGO!

 

[dynonsupport]

It's possible the shear screw is broken, but it's also possible that the previous owner / builder never quite got the mechanics of the servo installation quite correct.

You can check that the shear screw is, or isn't broken:
1. Get access to the servo.
2. Put your thumb and forefinger on the disc underneath the arm or capstan.
3. Shake the controls with your other hand and arm.
4. If you don't feel a 1:1 movement when you shake the controls, the shear screw is broken.
5. If the shear screw is broken, please fill out the form at: http://dynonavionics.com/shearscrew

If shear screw isn't broken, you can download the SkyView System Installation Guide and check the installation of the servos for proper functionality.

Hi everyone, first post here!

I recently bought a second hand Jabiru. I struggled to have the roll servo engage in flight and someone suggested I recalibrate/setup the servos.

After the calibration step where one is supposed to move the stick through the range of motion, the Skyview displays a message that "calibration failed" as the range of motion through the roll axis is "less than 20 degrees".

What would be the reason for this message? All I can think of is perhaps that the shear pin gave way and now the motion through the stick is not transferred to the servo?

Regards
CJW