just found this link if your curious:

[link=http://davesrcflight.mysite.wanadoo-members.co.uk/frame_pages/electric_flight_frame4.htm]http://davesrcflight.mysite.wanadoo-members.co.uk/frame_pages/electric_flight_frame4.htm[/link]

i guess Rm (winding resistance) is also an important factor when comparing motors. that page explains a bit more about brushless theory and gives a few equations to go with it. may or may not help, but it's good info to know anyways. i found out i was wrong about no load current. apparently it's independent of rpm or voltage. interesting huh?