Hi Guys, I am looking for some help reviewing 2 logs from 2 separate crashes that recently happened with a larger hexacopter. My first crash was last week and at that time it seemed like the crash may have occurred from a flight controller mount coming slightly loose and introducing vibration. I rebuilt the hexa and again had a crash. Both crashes happened after the copter flew well for a perriod of time. I was able to perform a succesfull autotune both times and safetly land (the yaw was quite sloppy after the autotune) The next flight is when the crashes occure. Both times the hexa has a hard time keeping stable and starts pitching back and forth very aggresively until I can’t control it at all and it hits the ground.
This hexa only has about 40min of flight time on it so far.
It has a Black cube mounted in a KORE carrier board.
Has 15" props using T motor motors and Hoibbywing 40A ESC’s
I have another hexa that it setup almost identical except it is running an older pixhawk. I have been flying this one for over 2 years without an issue.
At this point I am at a loss as to what is happening.
I uploaded both crash logs to the link and also the log from my most recent autotune that did not have a crash. The next flight after it did. The most recent log is “Crash_2020-04-30 20-20-44”.
Thank you for reviewing and I greatly appreciate your help.