My Tarot FY680 is now flying really well so here is the final set up.
Tarot FY680 Carbon Frame
APM 2.6 Flight controller and GPS
AFRO ESCs 30a
Turnigy MultiStar 3508 640KV Motors
Tarot GPS Mount
Tarot Battery Mount.
Tarot 2D Gimbal with additional on off switch
Turnigy 3s 2200 mA Lipo for Gimbal
Turnigy 3s 5000 mA Lipo for Hexacopter
HobbyKing Octocopter power distribution board.
13x4 Carbon Propellers
FRSKY Radio Transmitter and Receiver.
Turnigy 9xR Transmitter.
This unit will support 4s batteries with this motor/esc configuration.
I have also added some standoffs to lower the gimbal position to keep the motors out of shot when the Gopro is pointed about 15 degrees down. This works very well. In this video I move the GoPro to Level half way through so you can see the difference.
![](https://i.ytimg.com/vi/R9DNxMdSRPc/maxresdefault.jpg)