3GX - Tail Problem.

[chadvandonkey]

Got my 700N converted to FBL and finally got it up at the weekend but I had a problem or 2. Apart from the well documented rearwards drift and the seemingly massive expo on cyclic I found I had a problem with the tail thatr I'd not had with the previous flybar setup. During continuous tail rotation i.e. full right rudder for several full rotations the tail would flick left and right on it's own and randomly although full right stick was held. It seemed fine from initial take-off and got progressively worse through each and several flights. I've reset the "tail" portion of the gyro several times over and checked the setup of the 3GX on the laptop at the field once the problem became apparent but all looked ok. The tail linkage is fine and free and i've tried 2 different tail servos so the problem lies elsewhere.

What I have noticed is the power LED's on the align reg had got down to the orange LED so I'm wondering if the tail jitter is to do with running low on battery power and holding full tail in plus bouncing full + then - pitch - anybody else found this? It seems to come back ok but is scary when it does it's own thing.

My RX pack is a 2700mah overlander and was full charge before flying so I'm not sure if this is simply coincidence or whether I need some more power to run the 3GX. I have read they are power hungry vs a simple gyro.

I'll be ordering a new RX pack this week but will give it another go on full charge and see how it goes.

Thoughts?