Need Parts/ Calibration Advice-X650f Build

[OzzMan878]

I cannot get my quadcopter to lift off, not sure if i need different motors? Need some suggestions, based on my quad build:

• HobbyKing X650f frame
• kk2.1 flight controller
• Q Brain 4 x 25A ESC (modified the wiring to meet the layout of the kk2.1 controller)
• 4 x NTM Prop Drive 28-26 1000kv/235w motors
• 4000mAh Floureon 3s Lipo battery
• Turnigy TGY-i6 controller
• 4 x 11" carbon fiber propellers (2 CW & 2 CCW)

Initially I built to quad with 4 x turnigy 30A ESC's all powered through a distribution board, but same issue... wouldn't take off.
All propellers are spinning in the correct direction, the kk2.1 flight controller has been flashed, ESC's have been calibrated... But I still can't get it to take off.

All suggestions would be greatly appreciated!

 

[RENOV8R]

You might be a little underpowered for that size quad, but it should still fly. Is it trying to lift, or just staying stuck to the ground?

 

[OzzMan878]

It is trying to lift... if I gradually accelerate it does not seem to lift at all, but if I throttle 100% it jumps a bit... just won't maintain any flight time.

Thanks for the reply

 

[RENOV8R]

My only suggestion would be to try a better battery. A quad that size should really have a 4S lipo. I'm a fan of the Turnigy Graphene for larger quads. Something like this at the minimum.
https://hobbyking.com/en_us/turnigy-graphene-4000mah-4s-15c-w-xt60.html
My 650 Sport is probably similar weight and size and this is what I use for about 30 minute flight time
https://hobbyking.com/en_us/turnigy-graphene-10000mah-4s-15c-w-5-5mm-bullet-connector.html