12Z Radio System FAQ

Can you tell me why I cannot get my throttle stick on my 9Z/12Z to go full throw up and down? It stops short of going fully up and down by one white mark.

These are set with limiters installed. They can be removed if this bothers you, but the throttle stick needs to be re-calibrated afterward. The upper radios from the 9Z up have them installed. The 9C and lower do not have them. But there is no need to worry; your throttle servo will travel all the way from end to end of the limits you set in EPA.