Hello,
i have the problem that the copter flips randomly during lift off. when i start the copter in hand 1,3 m above ground it flys perfect.
here the video and the log files with my flip problem
Copter Data:
APM 2
Quadcopter X
Motor 750kv
12x4,5 props
weight 1,3 kg inkluding GoPro and Battery
3300mAh Battery
Software 2.5.3 with default PID
diameter Motor to Motor 53 cm
any ideas?
log file http://diydrones.com/forum/attachment/download?id=705844%3AUploadedFile%3A830277
some pictures
Copter is in X config. the blue Battery is the backside of the copter
Replies
I am having this same issue with a XT-650 quadcopter
apm 2.6
3000 mah battery
Quadcopter simply flips on take off... I tried calibrating the ESCs with APM several times and still having the issue....
i managed 10 take off on the street without fliping.
the problem was:
1. taking off in the grass; it works much better on a flat surface where the copter can slide a bit
2. the copter was not balanced. the battery was to much out of the center. so the copter always trys to lift of with the front first, which results in a flip backwarts or backwards left or right.
open issu lift off in grass. will test the next days
i did the following steps:
checked again Props and Motos spin direction.
recalibrated all ESC´s
made the following setup on the ESC:
checked cabling between APM and ESC´s
but copter still flips during take off
Are you taking off from grass? I've had legs caught by the grass before and it can cause a flip.