Hi Allen. I am also planning to add servo to my manual RV7 aileron trim. I ditched the springs and links in favor of bungee cord with electrical eye end crimped at each end and connected at same places. It is much smoother, quieter and if it ever broke, is unlikely to jam controls. Now I just need to find the best place to mount the servo so I am also interested in original plans.
Can someone scan the aileron servo plans doc for us?
My bungee system prompted me to consider the same for the rudder, I have put a small yachting pulley on the firewall at the forward corners of copilot side rudder pedal, and put a bungee connecting both rudder pedals through the pulleys in the corners. This keeps the rudder cables reasonably tight at all times. If I fit a servo at the mid point of the bungee between the rudder pedals, I will be able to bias the rudder and provide adjustable rudder trim.
Anyone tried this?
Regards Morris.