The Matching Dilemma
Digital servos have brought a whole new level of precision and power to the world of R/C flight. Even with all this precision, they are still subject to the inefficiencies that differences in linkage geometry can create when more than one servo is used on a single control surface. Often, geometric differences are more pronounced with digital servos because of their superior resolution and the fact that they produce 100% torque with just 1° of offset. Add to this the minute variations in power output and centering that identical servos of every brand have, and it's easy to see why matching servos to a task is a little tricky.