Originally Posted by jull_under
Anyone install TruTrak servos for roll & pitch.
Pictures would be greatly appreciated.
Also, what hardware was used to fabricate pushrods, rod end bearings etc.
I can't find an "install kit" like the other manufacturers.
I installed Garmin but I pulled the TT drawings/models from their website when looking for ideas. IIRC, both pitch servos attach almost identically to the elevator bell crank. That should be the easy one.
Unlike TT, there is no Garmin RV-4 release for roll servo installation. TT attaches a band to the control column for actuator attachment. While it would have been an easy thing to replicate, the mechanical advantage/leverage is fairly limited thus requiring more actuator force. Mr. Hersha's and FinnFlyer's approach made better use of the available kinematics. Since anything I did would have required custom fabrication/application, I decided to stand on their shoulders.
If I were installing TT, I would have followed their kit instructions and not thought twice about it.