I have got the conclusion that this device makes Bebop2 uncontrollable during descending and finally crashes to the gound.
I have experienced Bebop2 crashes from descending mode several times.
When I command to descend Bebop2 with it, Bebop2 always starts vibration of rolling attitude in descending.
Once this vibration begins, Bebop2 is unable to control and finally crashes.
Why does it occur ? From here is my thinking.
The following movie shows attitude rolling vibration of Bebop2 at descending. At this time, fortunately it can recover from uncontrollable status.
https://youtu.be/F_e8E_fZsY8
With Device is to crash
Why does this vibration occur at descending?
I suppose this device is so air drug for Bebop2 to keep calculated descending speed.
Substantially, Bebop2 is designed without this device. Then Bebop2 can descend at designed descend speed. So Bebop2 attached this device, it can not descend at designed descend speed. It occurs Bebop2 uncontrollable.
I remove RAIFU Extended Landing Gear Device to ensure whether my theory is correct or not.
After device is removed, I had one flight. During this flight, there was not any rolling vibration attitude during descend and could confirm stable attitude at descending.