On today’s giant-scale airplanes, it is a common sight to see multiple servos grouped together to command a single control surface. When you use multiple servos per surface, it is important to do it correctly.
Mechanically, control horns should be positioned close to the centerline of the servo and with the linkage’s pivot point directly over the hinge line.
Moreover, each control horn should be positioned so that the distance from the hinge line to the pivot point is the same. It’s quite easy to overlook this on an aileron where the thickness of the wing changes from the root to the tip.
Most high-quality kits and ARF models are designed to address each of these points and provide the proper starting point to assemble a capable model. Let’s focus on the programming fundamentals for such setups.
PROGRAMMING BASICS
A 120cc-size aerobatic aircraft, like the Hangar 9 Composite QQ Yak 54, has two aileron servos per aileron…
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