Hitec Hs-65MG Servos stopped working TWICE!! - HeliFreak
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Old 02-19-2012, 04:28 PM   #1 (permalink)
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Default Hitec Hs-65MG Servos stopped working TWICE!!

Guys,

I installed 3x Hitec HS65MG servos on my Trex 450 Cyclic, after 6 flight one of them (ailerons) stop working...than replaced it with another....after 5 batteries again the same servo that was replace stopped working too.

Any one of you had the same issue?

or

Any one can tell me why this is happening please?

Thanks
Ramon
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Old 02-19-2012, 05:27 PM   #2 (permalink)
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The HS65's don't like to be squeezed or twisted in the frame.
If this happens the metal gears could bind up and the servo will fail.

So, if the servo fits tightly in the frame mount file/sand it out to make a looser fit.
Also make sure the mounting screw holes and servo tab holes line up so the servo doesn't get twisted.
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Old 02-20-2012, 04:34 AM   #3 (permalink)
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The servo sits perfectly in its hole, the hole is a bit bigger than the servo and it fits brilliant. I do not know why this is happening i am starting to believe that the servos are not original Hitec, could be?

Thanks
Ramon
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Old 02-20-2012, 04:41 AM   #4 (permalink)
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Hi, I believe that the hole where the servo fits is not tight to the servo. I am starting to believe that these servos are not original or something....anyone had these problems?

Thanks
Ramon
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Old 02-24-2012, 06:46 AM   #5 (permalink)
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Check voltage output from receiver at the aileron pins. Compare voltage to the other outputs on receiver. It's almost impossible to have varying voltage from the receiver, but stranger things have happened. Perhaps an increased/spiked voltage to the aileron is causing these failures.
See following link on 65mg clones...https://www.helifreak.com/blogs/iced/1336-fake-clone-hitec-hs-65mg-servos.html
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Old 02-25-2012, 11:52 AM   #6 (permalink)
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Quote:
Originally Posted by ramall79 View Post
Guys, I installed 3x Hitec HS65MG servos on my Trex 450 Cyclic, after 6 flight one of them (ailerons) stop working...than replaced it with another....after 5 batteries again the same servo that was replace stopped working too.
Any one of you had the same issue? orAny one can tell me why this is happening please? Thanks Ramon
The HS-65 is a very popular servo in those models, further to previous answers, perhaps the following may assist pinpoint what is happening::
. Digital Servo - Why They Burnout (also applies to non digital)
and
. Q. "Keep Frying HS-5245MG Tail Servo and don't know why"
A. answer
Good pictures (whole thread good read):
. Servo - Hitec HS-65MG How To Rebuild, Replace Bearing - Pictorial & Video
- if a new bearing is required use MR85,

will explain what is happening to any brand/type of servo in that situation..

more information under
"Radio Systems, Accessories, Alterations and FAQ." - Digital Servos, at:
Alan's Hobby, Model & RC FAQ Web Links

Alan T
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