I recently purchased a Protocol Manta quad-copter. After a few days, when I throttle it drifts to left and backwards. I have tried the fine tuning controls without much success as the quadcopter does not stay airborne long. Any suggestions?
Generally when one of my quads acts like that something is wrong with the the left rear motor and/or its drive.
I'll second what jb said. That copters looks like a private label version of a Syma X3 http://www.amazon.com/Syma-X3-Channel-2-4Ghz-Quadcopter/dp/B00E94LNKY http://www.rcgroups.com/forums/showthread.php?t=1883241 I recently had a new (flown less than 30 minutes) X1 which did the same as you describe except to the front left. It was the motor. If you purchased from Amazon, etc. you may just want to return it as opposed to getting out the soldering iron.
