hi carl. lipo's over here arent as good as you guys have over there at the mo.... errrrrrrrr thats why i had to go with faup's. but i am having difficulty trying to balance this model out. i think im going to split the pack in two an put them either side of the fan i've decided not to go with the hand launch after all did'nt fancy seeing it nose dive from launch. im hoping the rest the set setup is ok though..... mega motors 16 15 2 wemotec fan, jeti 70 3p opto esc. anyone have the dimensions of the thrust tube, i dont really understand the other one?????? does it improve performance alot????????????????????????????????????? thanx carl for the info.