the yak is a replica of the full scale one... which is a 3d plane (or as good as you can get anyway with out killing the pilot) and you obviously have not seen the videos of this thing or talked to anybody who has flown it or sen it fly. it is a specific 3dr. you can check it out at www.extremeflightrc.com and you will see what i mean. they have a video there. all extreme flight products are specifically made for 3d. the yak simply did not need to be so different...