I've got a Eflite G90 HH gyro running through the 3in1 controlling the direct drive tail motor. The tail has a 3x3 prop cut down to 2.5x3 and the tail motor still gets hot. The 3in1 has the middle and bottom screw set to midway. If the G90 has the gain set to about 50%, the tail wags and the tail motor pulses. If the gain is set too low (about 30%) the heli needs lots of right nose trim to get it to hover. Still experimenting with settings.

The glitches are back (thinking it could be my neighbor is using his ham radio) so the fly bar twisted during a glitch. When I staightened it out, the Axe had a bad vibration. However, I was getting closer on the gyro settings on the G90. It pulsed, but could have been from the vibration and not wag/gain and didn't need lots of nose right trim. Its working, but its not any better than stock, so far.

I have a brushless main motor coming with an ESC. Can I use a pixie 20 amp brushed esc to control the tail motor with the G90 and scrap the 3in1?