Originally Posted by rexless
I don't recall if this helicopter has any sort of protection in place to kill the motors when it detects the blades may be encountering a restriction. If this is the case I don't recall anything like this happening in my blue 9116.
Yes, it has this kind of protection. It's called MOPS. And I recommend killing it on this particular PCB only if you stay with the standard battery.
It's worth a try - you could unsolder the bridge quite easy if it doesn't help.
P.S. do you know how to contact banggood via mail? they dont answer my mails sent to firstname.lastname@example.org