tail moves sitting still ?

[wizzel1]

Hello, I have a AR7200BX with a TORQ 9188 tail servo on a goblin 700. I'm having problems with the tail holding, I have tried playing with the tail gain in the radio and on the AR7200 with no luck. The heli will fly. After many attempts I have seen that the tail will be moving when the heli is just sitting on the ground ?. I can get the tail to hunt and wag but it will not hold still. Can any one help I'm open for any and all segg. Thanks

[onemorecrash]

I had the same problem
Tail hunting like that. It was on my trex 550.
I moved the unit from the top where it was
To the bottom under where the tail servo goes.
Problem went away. It could be picking up vibes

[HEXAHYDRATE]

If the tail is moving with the heli sitting on the ground and not spooled up, I would suspect the servo or the wiring. Test the servo if you have the ability or try another if you have one.

[crashcopterman]

Check the monitor on your radio for output, maybe a gimbal pot is getting tired. You could also increase the deadband a touch and see if that helps.

Steve

[HEXAHYDRATE]

+1 on the radio check. I was just assuming the same radio is being used for all the helis listed in his signature, and they are not showing this symptom.

[Caeguy]

I had my tail drifting and it was due to tight tail servo wires entering the AR7200BX. Just a another item to check.

[wizzel1]

Originally Posted by HEXAHYDRATE

If the tail is moving with the heli sitting on the ground and not spooled up, I would suspect the servo or the wiring. Test the servo if you have the ability or try another if you have one.

Hello, It was a bad tail servo., I changed the tail servo with another TORQ 9188 and moved the servo arm ball out to 16mm from 13mm. Now the tail is as smooth as a babies but. Thanks for all your segg.