Flywing H2 tail problem

[Zentiger]

Hello
Have been flying Trex450 for long time
So I saw Flying FW450 V3 and I give a try and I love it !!
So I decided to convert my reliable Trex450 to new Flywing H2 controller
My spec:
Trex450 DFC
Castle creation edge 50 Phoenix
Bavarian Demon fly controller
TYG 3066 HV servos
TYG 616 HV tail servo

I change the controller e setup everything as demo videos and it come without a problem
I calibrated the compass/GPS in a empty baseball field without a problem
I went to a maiden fly, the problem starts
The helicopter got a strong satellite signal
GPS 1 = 25 satellites
GPS2 = 16 satellites
Everything ok
I unlocked and started power up the helicopter went in a hover and suddenly lost tail and spin counter clockwise violently
Almost crash but, as experienced I was hover Lower to the ground.
Since then, I disassembled the helicopter 3 times all mechanical is perfect but this problem continue happen
Never had this problem with Bavarian demon or my FW450V3
Now is almost a month and I can fix this problem
This why I’m contacting you
I can do anything anymore mechanically and the settings from the program is flawless
Do I have a bad unit?
Can someone tell me what it is causing it?

Anyhelp
is
welcome

[xviper]

The Flywing H2 controller is designed for an electric tail rotor where the speed of the tail motor changes to control the heli's yaw. If I'm not mistaken, your TREX uses pitch on the tail rotor to control yaw and control the tail and can't regulate a servo that does the tail pitch. You'll need to find another kind of GPS controller that can regulate a tail rotor servo. Most of today's GPS Helicopters uses a similar type of controller and can't deal with tail rotors that work on pitch.
Someone else tried this a while back and posted it here. He had the same issue. Perhaps you could find that thread and ask him what he ended up doing and how he fixed this problem.