Firmware: Arduplane 3.8.4
Airframe: XUAV Talon 1718mm with 150mm wing extension each side
Power: Tattu, 10000mah, 6Cell, 22.2V, 25C
Pusher Motor: Maytech 3548-790-S, 790Rpm/V, 717watt
Pusher Prop: 11 x 8.5
Pusher Esc: Castle Creation Edge Lite 75
Quad Motors: 4 x KDE Direct 4012XF
Quad Props: 4 x KDE 15.5 x 3.5
Quad Esc: 4 x Castle Creation Lite 50.
Auto Pilot: Pixhawk with Power Block.
GPS & Compass: 3DR UBlox
Servo Rail Power: Separate 5 volt, 20 Amp Ubec
I took off in QLoiter and climbed to approximately 30 meters. Switched to FBWA and applied throttle. The transition was extremely smooth but soon afterwards almost seemed that when the quad motors stopped the rear pusher motor also stopped. Switch back to QLoiter and the quad motors started up and she stopped for a moment but then became completely unstable and gravity was declared the winner.
I would really appreciate it if somebody with experience please look at the log file and give me some explanation and advice.
The log file is uploaded in: https://login.filesanywhere.com/Login.aspx
Log in Name: firstname.lastname@example.org