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Old 10-17-2009, 01:50 PM   #1
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Default Hetic Servo HS-7955TG HELP

I am installing two new servoes in a RC8t. Under no load both servos have a humm and a little vibration. The the sterring one more than the throttle. Is there something I need to adjust?


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Old 10-17-2009, 02:00 PM   #2
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Normal.They have very high resolution & are trying to center but the slop in linkage is bouncing back & forth.If you hold a little pressure on the servo arms & the buzz stops then this is your problem. Well not exactly a problem but the cause.
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Old 10-17-2009, 02:12 PM   #3
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I gave that a try and they still are vibrating. It has been a long time since I did this, but just seems that they shouldnt be making noises and vibrating.
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Old 10-17-2009, 02:30 PM   #4
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Usually normal. They buzz because they are constantly trying to center.

Usually you can bounce the car and they might find a spot with no load. The weight of your linkages is pulling on them.


If you remove the servo linkage. No arm, nothing. They should be quite with maybe a few clicks. Some clicks but not much.

If they are really noisey with nothing attached, its your radio.
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Old 10-17-2009, 04:50 PM   #5
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i have that servo .......its normal
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Old 10-18-2009, 10:23 AM   #6
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+1 NORMAL just the slightest tension will cause the humm/buzz noise its just a hight oz. servo trying to center ..
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Old 10-18-2009, 10:39 AM   #7
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they are digital.........that's why they hum/jitter.
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