RE: ESTES Airforce 1 Ducted Fan 747 Jumbojet
did you have to mess with the cg in the af1 to fly it? The af2 has a different battery and placement of the battery than the af1, the battery is how you adjust the cg on it, there is like 2" of play where the battery goes to slide it forwards or back. there is no mention of cg on the af1's instructions.
thanks