my quad just randomly flipped

hi guys, today i was doing a little bit of hovering in side, when it just randomly flipped over, i couldn't disarm the motors, i think it has done this once before in a previous release, im using the 2.4.1 release, i checked the battery voltage and i had about 22% battery left, it was the same voltage when it fliped before, this time when it flipped it was very aggersive, is there a bug in the software that would cause this

 

cheers glen

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Permalink Reply by Andrew Adams on February 28, 2012 at 8:13pm
The same thing happened to me. It scared the crap out of me the first time. After it did it a second time I just unplugged and plugged the battery in. Seemed to correct the problem...however, it seems like something that shouldn't happen.

ModeratorPermalink Reply by Graham Dyer on February 28, 2012 at 10:30pm

post your log file if possible

Permalink Reply by wraith on February 29, 2012 at 12:05am

never done any thing with the logs so i hope i got the right file

 

Permalink Reply by wraith on February 29, 2012 at 12:07am

got the wrong file

 

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ModeratorPermalink Reply by Graham Dyer on March 1, 2012 at 8:00am

Did it flip backwards or sideways? The log doesn't show much in the way of a flip, just an aggressive pitch change just after an aggressive pitch input towards the end of the log, did it crash land and stay still?

Permalink Reply by wraith on March 1, 2012 at 12:05pm

at a guess it went side ways, it happened so fast, to the the right, i mean looking from the back of the quad it flipped clockwise, motor 2 and three went in an upward direction

Permalink Reply by wraith on March 5, 2012 at 12:02pm

just thought i would do an update on this problem, after putting new blades on the quad i thought i would take it for a fly, it flying ok til i gave it a bit of yaw, after giving it small amounts of yaw i noticed something weird , the blades would make horrible noise, then the more yaw i let the sticks go and it would tilt side ways


ModeratorPermalink Reply by John Church on March 5, 2012 at 12:36pm

Hi Glen,

Sounds an awful lot like junk props- Either way too flexible or severely out of balance. It is possible that you have a bent motor shaft...

Permalink Reply by wraith on March 5, 2012 at 1:49pm

these props are apc slow fly, ive all ways used these with no problems, but they do sound like they are flexing to much, would a screwed motor cause the sudden pitching to the right, i say this cause , when i decided to fly it thrid time 1 motor wouldnt even fire, cant rembember which 1

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