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Dec 02, 2012, 10:51 AM
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john_53_70's Avatar
Help!

Unstoppable tail wag


I have a clone 450, spectrum tx and receiver. I'm using a spectrum h3020 digital tail servo, my gyro is a Gy48v. The odd part is it flew great I tried to put this frame in a fiberglass body and it was to heavy so I went back to the regular frame, now it has a bad tail wag in avcs mode, so replaced the gyro thinking it went bad. Well even with the new gyro ( which is different kind from what I had) it still does the tail wag all setting are correct and have not changed since it flew good. Any idea what will make his happen this?
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Dec 02, 2012, 05:42 PM
hovering-stage
Try decrease the gyro sensitivity (gain)
Dec 02, 2012, 05:54 PM
Registered User

Yeah


Might need to be re-tuned , so play with the gain ..
Also check the controls for any binding ..
Rotor speed ? has it gone up ? sometimes if you increase rotor speed it increases the sensitivity of the gyro as the tail rotor has more authority . And there probably is a few other things , but if you haven't changed anything
Dec 02, 2012, 06:08 PM
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john_53_70's Avatar
Well with the digital servo being used it say's to set it at zero, although I did try that and it made no deffrance. And the head speed is the same. Could I have a bad tail servo
Dec 02, 2012, 06:42 PM
Closed Account
Look for a missing or worn down tooth on a gear.
Dec 02, 2012, 08:02 PM
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john_53_70's Avatar
Found it, two parts the shaft that holds the tail rotor was dry and not allowing the steering Mechanism to slide freely. So I lubed it up. And the other part was the nut that holds down the metal pice that holds the tail rotor blade was loose. So I was about to sling a blade off! Guess the old girl was trying to tell me something was wrong


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