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Servo not centering issue

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Old 10-10-2014, 04:19 PM
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c130FE
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Default Servo not centering issue

I have an issue with the rudder servo on a plane I just purchased that has me scratching my head, need some help.

If I take the rudder stick and deflect it right or left a little, then let go of stick, the rudder returns to center as expected. If I take the stick and fully deflect the stick to left, and then let go of stick, the rudder returns to a point that is about 20 degrees to the right center. Then, if deflect the stick ful right and let go, the stick returns to dead center. Power is coming from a fully charged LiFe battery.

All other servos act normally.
Tried 3 different rudder servos this afternoon, same result
Replaced servo cable between receiver and tail of plane where servo connects to it, same result.

Old 10-10-2014, 04:59 PM
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speedracerntrixie
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You have a binding pushrod, hinges or something else in the system. Disconnect the linkage from the servo and move by hand to feel the bind.
Old 10-10-2014, 05:33 PM
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j.duncker
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Make sure the servo mount is not loose and moving a little.
Old 10-10-2014, 06:50 PM
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BarracudaHockey
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Disconnect the pushrod at the servo and see if it does it. Though not likely, you could have a bad stick pot in the radio.
Old 10-10-2014, 09:02 PM
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Bozarth
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And one of the most obvious...a cheap servo. Don't chase your tail too long on the issue.

Kurt

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