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04-22-2020 12:33 AM  43 days ago
flyawayed

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orlando , fl .USA

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Try checking the trust bearing in the blade grips they mit be dry and with no grease while ROTATION it will put a load on the bearing whitch make it hard to turn especially on a multi rotor assembly like the tail. I would take apart and grease the trust bearing thoroughly install and check while flight you should see proper movement both waysedward lopez sanchez
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04-22-2020 01:31 AM  42 days ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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/
/

You need to replace the servo.

That behavior is tipical when a servo begin to destroy by itself internally.

Murphy's law strike again.
A servo fail and you don't have a replacement...

/
Saludos cordiales,
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04-22-2020 01:50 AM  42 days ago
chopper37

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I agree with above replace the servo
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04-22-2020 02:12 AM  42 days ago
Tim W

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Rancho Cucamonga California

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Rojoalfa You need to replace the servo.

That behavior is tipical when a servo begin to destroy by itself internally.

Murphy's law strike again.
A servo fail and you don't have a replacement...
Yeah, but what’s weird is it works 99 percent of the time. And I’ve tried to duplicate the malfunction without much success. So I was leaning towards that solution. I was hoping that it wasn’t in the flight controller/gyro.
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04-26-2020 08:27 PM  38 days ago
Tim W

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Okay for those who are still following my post. I removed all the mechanics completely from the fuselage. I plug-in the receiver battery, and test the tail servo in both left and right direction using the transmitter. I’ve even simulated resistance by attempting to hold the tail rotor to create drag. And no malfunction none whatsoever???
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04-26-2020 08:38 PM  38 days ago
chopper37

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Wow ok, since mechs are out take all the blades off and run it up to see if there’s any electrical interference or binding? And giggle the tail servo wire if you can. Might be a pinched wire ? While running
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04-26-2020 09:04 PM  38 days ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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Tim W I’ve even simulated resistance by attempting to hold the tail rotor to create drag. And no malfunction none whatsoever???
/
/

Remember, the servo is about to fail.
That kind of test means nothing.

With that kind of test, you only see that the servo is doing its job... Yet.

That servo is going to fail while flying... So, be careful.

Get rid of the servo and reinstall everything.

/
Saludos cordiales,
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04-26-2020 09:20 PM  38 days ago
chopper37

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There you go I second that ^
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04-26-2020 09:42 PM  38 days ago
Tim W

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Rancho Cucamonga California

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Rojoalfa Remember, the servo is about to fail.
That kind of test means nothing.

With that kind of test, you only see that the servo is doing its job... Yet.

That servo is going to fail while flying... So, be careful.

Get rid of the servo and reinstall everything.
Yeah I get what you guys are saying. It just boggles my mind how it works every single time without fail when testing on the bench so to speak. But I gotta start somewhere.
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05-10-2020 10:56 PM  24 days ago
Tim W

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Well here’s the post report. I’m happy to say that after installing another tail rotor servo the problem is cured. Thanks to all for your help!
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05-10-2020 11:19 PM  24 days ago
chopper37

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Wow glad it worked out hate to say spend more $$$ but. It was sounding more and more like it. Enjoy happy flying
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