This is kind of an old thread but...

I think my tail motor is just short of going out on me. Lately, the tail seems to be lagging and as I increase throttle the nose spins to the left (so that I'm looking at the left size of the Axe) and I have to increase right yaw input to compensate. It's trimmed fine and only does this on occasion, but does seem to be increasing in frequency. I can tell when it's low on batteries when the tail starts to wag; before this point, it just yaws right with no wagging when the tail lags. Other than in-flight observation, is there a way I can perhaps measure current or voltage of the tail motor to see whereabouts it is in its life cycle? I bought the Axe new I think back in late February or mid-March and have been flying it consistently 4 to 5 a week, 15 minutes each session.