I havnt built a 500 but on my 450 I use the http://www.hobbyking.co.uk/hobbyking/store/__39036__Turnigy_Multistar_2213_980Kv_14Pole_Multi_Rotor_Outrunner.html motors with the 30 amp multistar esc's. I get off the ground at about 45% throttle and im carrying a fairly heavy 3000mah battery and a...