Servo Buzz???

Hey guys I have a couple of questions.
What causes a servo to buzz? On my belt v2 I have one (possibly 2) servos that buzz after I move the collective. If I move the collective up to any position and stop, they buzz until I give a small movement in the opposite direction.
I have cleaned and lubed the main shaft and all moving parts and everything feels free. What is happening in the servo to make it buzz?

Also, I crashed my belt yesterday and after the damage report includes an elevator servo. I don't know if the crash caused it to go out or if it went out and caused the crash???

Question is should I replace it with stock e-sky servo or different one? If a different one any recommendations on brand and model would help!


Thanks,

J.

Buzzing is normal thing for digital servos. Mine esky servos also buzzed for awhile, but after few months buzzing stopped

So the servo buzzing doesnt mean that it is in a bind?

Also should I replace it with another stock servo and if I use an aftermarket servo for the elevator does that mean that I also need to change the aileron and pitch servos, so that all 3 are the same????

Thanks,

J.

No, servo buzzing doesn't always mean binding
And you should replace all 3 servos. They should be the same, because different servos can move faster, travel more, which means inputs will not be very correct

When a servo buzz it means that something is not correct. (most of the time) Make sure that your transmitter is giving the wright signal. A digital signal is not correct for a non digital servo. It can also mean that there is too much tension or stress on the servo when it is in neutral position. There is an easy way to check this. Take off the servo horn. When the buzzing stops there is too much stress on the servo. Try to trim the servo one step en correct it with the linkage (make it longer or shorter). When the servo is stille buzzing after you took off the servo horn and the signal is correct, than you probebly have a bad servo. I don't know what kind of servo you are using so I don't know if they are cheap or not. I for myself use Furaba servos on my bigger scale heli. I don't want it to crash for beeing cheap on the servos.

Too much stress on a servo will make it burn out afther a while.

I know. Been there and done that

pevr wrote:

When a servo buzz it means that something is not correct. (most of the time) Make sure that your transmitter is giving the wright signal. A digital signal is not correct for a non digital servo. It can also mean that there is too much tension or stress on the servo when it is in neutral position. There is an easy way to check this. Take off the servo horn. When the buzzing stops there is too much stress on the servo. Try to trim the servo one step en correct it with the linkage (make it longer or shorter). When the servo is stille buzzing after you took off the servo horn and the signal is correct, than you probebly have a bad servo. I don't know what kind of servo you are using so I don't know if they are cheap or not. I for myself use Furaba servos on my bigger scale heli. I don't want it to crash for beeing cheap on the servos.

Too much stress on a servo will make it burn out afther a while.

I know. Been there and done that

no the buzzing on digitall servos are completely normal. it means that there holding everything in place and are not slacking off.

I agree about a little buzz when you are using a digital servo. Had one in my RC car for the steering (Hitec) and that one was buzzing a little bit but not much. It always made me nervous. But when it is buzzing much, that is not normal.

pevr wrote:

I agree about a little buzz when you are using a digital servo. Had one in my RC car for the steering (Hitec) and that one was buzzing a little bit but not much. It always made me nervous. But when it is buzzing much, that is not normal.

much means there pressure on the servo.