Issue with Bicopter in Qstab and Qacro Modes:
Video showcasing the problem: https://youtu.be/jCW-90Thx5k
When operating my bicopter in Qstab or Qacro modes, the system stabilizes with a nose-down attitude by tilting the motors backward. However, it does not tilt the motors forward, regardless of the flight situation, and thus it crashes. Right after recording the last video of the problem, it flipped over completely and broke a prop.
Transition to ACRO Mode:
The transition to ACRO mode functions properly, and the motors operate as expected during this phase. However, in Q-stab, hover, or acro modes, the motors fail to tilt forward as they should.
Motor Tilt Trimming:
I have ensured that the motors are trimmed correctly. In Q-stab, the motors are aligned vertically, while in normal ACRO mode, they tilt forward, which is functioning as intended.
Motor Limits:
The correct limits for motor tilting are set, yet I cannot find a method to allow or instruct the motors to also tilt forward.
Center of Gravity (CG) Adjustments:
I have experimented with various CG placements: nose-heavy, neutral, and tail-heavy. When slightly tail-heavy, the system managed to hover for approximately 2 seconds, but then exhibited the same behavior of not tilting forward.
I am using QGroundControl, arduplane, SpeedyBee F405 Wing, last 4s of video shows the base setup with old motors and cables and other things not done, on the video it’s got better motors and escs, cables tied up a bit too.