The airframe quality is poor (very loose on 4 foldable arm connectors) cause lots of vibration. Need to improvise your skill to fix them. The motor quality is even worse. After a couple times of test flight to tune the control parameters (all flight height is about 1 - 1.5 meter), one of the motor was burned and causing a crash which break the motor mounting bracket.
2019-05-27
F****g
The airframe quality is poor (very loose on 4 foldable arm connectors) cause lots of vibration. Need to improvise your skill to fix them. The motor quality is even worse. After a couple times of test flight to tune the control parameters (all flight height is about 1 - 1.5 meter), one of the motor was burned and causing a crash which break the motor mounting bracket.
KF24432-A