Originally Posted by Joystick TX

I tested the HD 1501MG servos today. I like to check the centering or *"zero" by adding a 12" pointer to the servo output. The way they center is a little odd. If the sticks are moved quickly they seem to work normally. They center within about 1/4 degree. If the sticks are moved slowly, they center to around 2 degrees, then after a second or two, they jump and center to within 1 degree. I'm not sure what that will translate to during flight, it may not be noticeable to me as a sport flyer, but I would not use them for serious pattern flying.