Servo problems 9153
05-21-2006, 05:19 PM
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Servo problems 9153
Hi, I was flying this weekend tn a competition. After the third flight one of my aileron servos A futaba 9153, started to sound and vibrate in a very peculiar way. It only does that when it is in the neutral position, if you move the aileron stick rapidly from any side to center.
I know that digital servos have a humming sound in their normal state, but this is not a humming sound, it sound like a little drum and it just barely makes the aileron vibrate, but the sound is loud.
I`m using this servo in a yak 54, only needs one servo per aileron.
The batteries for the servos are two 6 volt, 2700 mAh batts.
The gear in the servo is OK, no broken splines on any of them.
Some body told me in the field that sometimes these servos can not take the voltage of a 6 volt batt. when fully charged (6.75 volts) but then again, it is the only servo doing this. It is connected to the No. 1 channel.
When I changed it to the channel 6 on the receiver, it did the same thing. (it does not do it all the time, only when you push the aileron stick to either side and let go fast back to neutral)
There was no binding in the linkage, no slop either, everything is working tight and no unnecesary presure on the servo.
The problem was found on the ground and was unoticed on the 3 previous flights.
The servos are new, only 29 flights with the plane.
Can anyone give me any ideas of what could be wrong? and where to look?
Thanks
John
I know that digital servos have a humming sound in their normal state, but this is not a humming sound, it sound like a little drum and it just barely makes the aileron vibrate, but the sound is loud.
I`m using this servo in a yak 54, only needs one servo per aileron.
The batteries for the servos are two 6 volt, 2700 mAh batts.
The gear in the servo is OK, no broken splines on any of them.
Some body told me in the field that sometimes these servos can not take the voltage of a 6 volt batt. when fully charged (6.75 volts) but then again, it is the only servo doing this. It is connected to the No. 1 channel.
When I changed it to the channel 6 on the receiver, it did the same thing. (it does not do it all the time, only when you push the aileron stick to either side and let go fast back to neutral)
There was no binding in the linkage, no slop either, everything is working tight and no unnecesary presure on the servo.
The problem was found on the ground and was unoticed on the 3 previous flights.
The servos are new, only 29 flights with the plane.
Can anyone give me any ideas of what could be wrong? and where to look?
Thanks
John
05-23-2006, 08:25 AM
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RE: Servo problems 9153
Hi John,
It sounds as though you have checked everything we could think of here in the service center, I would suggest you send this in to our techs to repair or replace.
I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.
Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician
Futaba Service Center USA
It sounds as though you have checked everything we could think of here in the service center, I would suggest you send this in to our techs to repair or replace.
I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.
Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician
Futaba Service Center USA
ORIGINAL: juanes1969
Hi, I was flying this weekend tn a competition. After the third flight one of my aileron servos A futaba 9153, started to sound and vibrate in a very peculiar way. It only does that when it is in the neutral position, if you move the aileron stick rapidly from any side to center.
I know that digital servos have a humming sound in their normal state, but this is not a humming sound, it sound like a little drum and it just barely makes the aileron vibrate, but the sound is loud.
I`m using this servo in a yak 54, only needs one servo per aileron.
The batteries for the servos are two 6 volt, 2700 mAh batts.
The gear in the servo is OK, no broken splines on any of them.
Some body told me in the field that sometimes these servos can not take the voltage of a 6 volt batt. when fully charged (6.75 volts) but then again, it is the only servo doing this. It is connected to the No. 1 channel.
When I changed it to the channel 6 on the receiver, it did the same thing. (it does not do it all the time, only when you push the aileron stick to either side and let go fast back to neutral)
There was no binding in the linkage, no slop either, everything is working tight and no unnecesary presure on the servo.
The problem was found on the ground and was unoticed on the 3 previous flights.
The servos are new, only 29 flights with the plane.
Can anyone give me any ideas of what could be wrong? and where to look?
Thanks
John
Hi, I was flying this weekend tn a competition. After the third flight one of my aileron servos A futaba 9153, started to sound and vibrate in a very peculiar way. It only does that when it is in the neutral position, if you move the aileron stick rapidly from any side to center.
I know that digital servos have a humming sound in their normal state, but this is not a humming sound, it sound like a little drum and it just barely makes the aileron vibrate, but the sound is loud.
I`m using this servo in a yak 54, only needs one servo per aileron.
The batteries for the servos are two 6 volt, 2700 mAh batts.
The gear in the servo is OK, no broken splines on any of them.
Some body told me in the field that sometimes these servos can not take the voltage of a 6 volt batt. when fully charged (6.75 volts) but then again, it is the only servo doing this. It is connected to the No. 1 channel.
When I changed it to the channel 6 on the receiver, it did the same thing. (it does not do it all the time, only when you push the aileron stick to either side and let go fast back to neutral)
There was no binding in the linkage, no slop either, everything is working tight and no unnecesary presure on the servo.
The problem was found on the ground and was unoticed on the 3 previous flights.
The servos are new, only 29 flights with the plane.
Can anyone give me any ideas of what could be wrong? and where to look?
Thanks
John
