We have recently been contacted about various reported servo failures on the high power digital JR servos. This includes the 810G, 8417, 8411 and 8700G, which are all servos capable of huge holding power as well as high power in the case of the 8411 and 8417.

I have 60 odd models most with Digital servos including 28 DS8411 servos in helicopters and aeroplanes. I'm yet to have a failure in more than two years use.

We also use the 8417, 810G and 8700G in various models-again no failures.

There has not and possibly will never be a servo that will stand up to the vibration and abuse some models/modellers will dish out!

The digital servos have a much higher holding power and as a result if stalled the current goes sky high-something has got to give, maybe the motor pinion or the motor its self.

I'm convinced that if you set the control throws carefully so that the servo is not stalled at any point and that you take care on a helicopter to reduce vibration (Even if you can't see it shaking, vibration is there) you will be unlucky to have a failure.

To date we have bought 105 DS8411 servos this year and to my knowledge none have failed.