Not too sure what caused this, i am running an alien X frame with 60amp esc's and Turnigy D3548/4 1100kv motors with 5000mah 4s lipo. i am only getting about 7mins flight time. the esc's seem to run warm although the motors are cool. 10" 3 blade 4.5 props. i did a few laps around my park and a few quick punches then all of a sudden my pixhawk reset it self, you can clearly hear the pixhawk restart after the crash.
interested to hear your comments
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Right, after hours of testing, unplugging and fault elimination, i finally found the culprit and solved the power reset issue.
it was the pixhawk power module. After watching some youtube videos and research i learnt that the power module only supports upto 18v or 60a
heres a link where you can buy a larger power module,
http://www.ebay.com/itm/New-Crius-Power-Module-28V-90A-for-Pixhawk-...
i hope this helps you to
Still having problems with this, very weird, i put my quad on the bench, took the props off, connected a 3s lipo, if i throttle up slowly it works fine, but if it is quick throttle up, the pixhawk resets. escs are cold, lipo is fully charged. not sure, any ideas?