I have built a Hobby King X650F quadcopter. The total build weighs 2086.52 grams or 2.08652 kg or 4.6 lbs. I can't seem to get the quad off the ground. My parts are as follows:
HK x650f frame
4 x Sunnysky 4108s 380kv
Emax 40amp Ubec ESCs
5000 mah 3s 30c battery - I combined 2 of these...