This is a review of the quadcopter that i have built and have started to tune to the proper settings. The frame is a S500 frame paired with a kk 2.1.5 flight controller board. Helpful tuning page that i used to tune my kk board- http://www.hobbyking.com/hobbyking/store/uploads/684120529X487876X34.pdf
update video- https://www.youtube.com/watch?v=UGhxWxqZMBQ