9C servo will not return to nuetral
05-12-2003 | 05:53 PM
#1
Thread Starter
Senior Member
9C servo will not return to nuetral
Tx 9CAF
Elevator servo (S3004) when given down stick, and release the stick will go back to almost neutral or neutral but will not stop humming. Only way to stop hum is to give up stick and release or just lightly touch the stick.
This condition occurred 28 out of 30 times. Have not switched out servos yet.
Thoughts?
Elevator servo (S3004) when given down stick, and release the stick will go back to almost neutral or neutral but will not stop humming. Only way to stop hum is to give up stick and release or just lightly touch the stick.
This condition occurred 28 out of 30 times. Have not switched out servos yet.
Thoughts?
05-12-2003 | 06:33 PM
#2
Joined: Jan 2003
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From: Champaign, IL
9C servo will not return to nuetral
Hi mikenlpaz,
It sounds as though there may be binding on the servo arm. Have you tried recentering the servo then reattaching the control arm, to make sure there is no binding?
I hope you find this information helpful. Should you have any further questions or concerns, please do not hesitate to contact us at 217-398-8970 for Support, 217-398-0007 for Service or via fax at 217-398-7721 or by email at [email protected].
Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician
Also you may want to check our Website at (http://www.futaba-rc.com)
It sounds as though there may be binding on the servo arm. Have you tried recentering the servo then reattaching the control arm, to make sure there is no binding?
I hope you find this information helpful. Should you have any further questions or concerns, please do not hesitate to contact us at 217-398-8970 for Support, 217-398-0007 for Service or via fax at 217-398-7721 or by email at [email protected].
Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician
Also you may want to check our Website at (http://www.futaba-rc.com)
05-12-2003 | 07:49 PM
#3
Thread Starter
Senior Member
9C servo will not return to nuetral
Hi Krysta
Removed servo arm. No humming.
There does not seem to be any binding or out of alignment in the linkage.
Adjusted (lengthened) linkage till there was no hum.
Now have droupping E with linkage connect point .21" aft of hinge line right angle measured from the hor stab.
I previously gave the CA hinges over 100 full deflexion flexs to loosen them up.
Q1) Is the Sub trim function possibly applicable as a solution?
Q2) Would I accomplish anything by moving the E to a VR Sw to test if it hums in different set positions other than trying to hold a set position with the stick?
Q3) Would reversing the servo temporarily to see it hums aid in solving problem? .Tested makes no difference.
Recentering the servo? Elaborate please I do not understand. Is that a physical or electrial recentering? It's mounted exterior aft +/- 12" from hinge line, not touching the fuse all sides, with a ply block behind aft mount holes.
Removed servo arm. No humming.
There does not seem to be any binding or out of alignment in the linkage.
Adjusted (lengthened) linkage till there was no hum.
Now have droupping E with linkage connect point .21" aft of hinge line right angle measured from the hor stab.
I previously gave the CA hinges over 100 full deflexion flexs to loosen them up.
Q1) Is the Sub trim function possibly applicable as a solution?
Q2) Would I accomplish anything by moving the E to a VR Sw to test if it hums in different set positions other than trying to hold a set position with the stick?
Q3) Would reversing the servo temporarily to see it hums aid in solving problem? .Tested makes no difference.
Recentering the servo? Elaborate please I do not understand. Is that a physical or electrial recentering? It's mounted exterior aft +/- 12" from hinge line, not touching the fuse all sides, with a ply block behind aft mount holes.
