View Full Version : GRT SX driving a Trutrack Vizion 385

10-12-2020, 07:11 PM
With the GRT SX controlling a Vizion 385 in heading mode I constantly get a wing rock and the stick is constantly moving. Looking for suggestions on how to adjust or make changes to the settings.

D Weisgerber
10-12-2020, 07:55 PM
Is the plane trimmed correctly, I have a TruTrak ADI Pilot II. If it's out of trim it will constantly rock the wings.

10-12-2020, 08:11 PM
I did try to change the trim but it did not make much difference in the rocking.

10-12-2020, 08:17 PM
I have same and no rocking.

Grab the 385 manual and in good VMC take out some Lateral Activity (0-24, higher, more active).

10-13-2020, 08:15 PM
While flying, autopilot engaged, press and hold the mode button. The will put you in the config mode. The first selection is roll gain/lateral activity, turn the knob to the left until roll gain is zero and then exit. My rv6 does the same thing in perfectly still air. I adjusted the roll gain to zero and when it is slightly moving the stick, i roll in a little roll trim. This takes out the dead zone in the servo. Flys like it is on rails.

10-14-2020, 07:25 PM
Thank you for your help. I will give it a try.