RE: Spektrum DS821 Sevos Junk or good
I have used them and will continue to do so, but only on certain applications and with a longer screw to hold the servo arm on (one that goes deeper into the output shaft). I have and will use them on sport style aircraft up to 90-120 size, but not on something with a high control surface loading such as 3D. Also I will not use them on any heli. But other then those restrictions I have used them and have had no problems or issues.