Control stick and AP Servo Redux

Time: 2.5hrs

Finished installing the new control sticks and also redid the rose joints in the AP servos.

The controls sticks seem much better then my old ones, though they’ve tightened up a bit not that everything is installed. Probably because the sticks are tied together and there’s more stuff the move.

Above photos are the roll servo. After installing the short push rod between the control stick and the servo I noticed that there wasn’t much movement of the servers arm. It turns out that I had mounted the rose joint on to the bottom hole of the servo arm and not the 3rd hole (2nd from the bottom). With that fixed the servo movement is much better.

On to the pitch servo. After connecting the push rod between the servo and the rear elevator control tube I noticed that the servo was hitting the stop limit of the servo and not the main stops. After reviewing the manual I saw noticed that the rose joint should be mounted in the bottom hole and not the 3rd hole of the servo. The movement is better but it still seems to be stopping on the servo limits just a hair before the main stops. It maybe that some adjustment of the control push rods will fix this. I’m not going to worry about this right now.

Also the end of the bolt is very close to one of the bolts holding the servo to the frame. I added one thick washer to the head side of the assembly and that created enough space.

Photo of how close the end of the bolt was to hitting the mounting bolt. I probably should t have used washers on the mounts, but the bolt was long enough so adding the washer to the head side of the rose joint assembly worked fine.

3 thoughts on “Control stick and AP Servo Redux

  1. Jim,
    I just did this install too. Regarding your concern on the bolt head in the last photo – the bolt is supposed to be installed the other away around per the Garmin G3X installation manual, page 18-19. I know you did this install a while ago, just wanted to alert you.


    • Thanks. Yeah that would probably fix the clearance issue with the bolt. I believe I was following the TAF Sling 4 Finishing Construction Manual Rev 1.6 (page 24) which shows the bolt the other way. Also I may have tried putting the bolt in the other way and wasn’t able to get the bolt in without having to take off the arm from the servo, but can’t remember.


  2. Pingback: Autopilot Servos Install and Fuselage Wiring – Jetshine's Sling 4

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