ST47

When talking about standard servos, many pilots associate the word “standard” with the word “cheap.” This is not the case with the ST47 and ST47BB, as they have passed tests that other manufacturers wouldn’t even think of putting their equipment through. During the design and testing phase for the ST47, the potentiometers were tested for a total of one million cycles without failure! Talk about durability and reliability that you can count on. Perfect for an aerobatic plane, or any .40- to .90-sized airplanes, the ST47 or ST47BB servos have smooth gear trains and are plenty durable. Plus, when you add in the ball bearing supported output shaft on the ST47BB, it operates even smoother, freer, and truer.