This is a perfectly symmetrical ship. The center of mass is right in the middle. The propellers turn clockwise. My question is, why does it tilt over time even with 50 stability? i use high water settings with high update frequency. Is this a bug or intentional randomness? Is there a way to stabilize the craft?
Make sure your rotors spin in opposite directions. btw I'd suggest not using stability, it increases the inertia tensor scale, which may not be what you intend. Especially setting it up to 50, that's way too much.