[suicideneil]

Well, there a couple routes you can take with an outrunner setup:

outrunner in place of a normal motor, so they tend to be smaller and higher kv.

outrunner used in place of the tranny, or inplace of the spur & pinion- direct drive more or less, so they tend to be a bit larger and slower.

Hence the slight price difference between the different sizes and cheaper vs brand name motors. I've toyed with the idea myself abit, but i'll let a few more pioneers have fun first before I do any serious thinking.