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Stec 30 aileron oscillation


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It may have developed a dead spot in the center of either the controls (e.g., a bearing wearing somewhere in the aileron system) or the sensor in the TC.   If there is more mechanical slop (deadspot) in the yoke movement center when on the ground than usual this may be contributing.

There are other things that might cause that, but that's a fairly easy one to check.

 

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It’s probably an issue with your servo. Short of an overhaul, you can exercise it on the ground by having it travel back and forth through its entire range several times. This worked for me for quite a while until an overhaul was necessary.  

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50 minutes ago, Rwsavory said:

It’s probably an issue with your servo. Short of an overhaul, you can exercise it on the ground by having it travel back and forth through its entire range several times. This worked for me for quite a while until an overhaul was necessary.  

Any instructions on how to "exercise" the servo?

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59 minutes ago, EricJ said:

It may have developed a dead spot in the center of either the controls (e.g., a bearing wearing somewhere in the aileron system) or the sensor in the TC.   If there is more mechanical slop (deadspot) in the yoke movement center when on the ground than usual this may be contributing.

There are other things that might cause that, but that's a fairly easy one to check.

 

There is a bit of slop in the alierons on the ground.  Once in the air there is no slop at all. 

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4 minutes ago, flyingchump said:

I took a look at mine.  It's outboard on the pilots wing.  It's connected via a push pull tube, not cables.

S-Tec and Century used pushrod controls.   The same idea holds, though, that there should be little to no play in the pushrod to the aileron belcrank.

 

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Also I’ve read on here to exercise the “breakout” by commanding a left turn and then manually forcing a right turn (and vice versa). On the ground, and iaw the before takeoff checks in the checklist addition included in the documentation.

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