elevator trim

[rwarre]

Have read a bunch of posts concerning this, and I gather that I cannot use Ray Allen system connected directly the AP servo(GSA28) unless I have a Gad 27. Or am I not clearly understanding how this works.

 

[rocketman1988]

My RAC servo is connected directly to the GSA28. I do NOT have a GAD27 but I do have a VPX Pro.