i dont have an exact measurement. but...........its way more tail heavy than what hanger 9 says. i have my tank rite in front of the wing tube ( cg shift is less as tank empties ), battery behind, rx behind, throttle servo behind, rudder servo in the tail. basically just fly it how the manual says to get used to it, then change things. try moving the battery back. perfect balance for me is where it needs little to no elevator input flying right side up or upside down. to see if it is balanced, just roll inverted and pitch the plane at a 45 degree angle into the wind. if your nose drops, your nose heavy, if your tail drops your tail heavy. the more tail heavy you go, the more effect your elevator will have so be careful of that. it may be a bit different taking off. so just keep the low rates reasonable.

just dont make it to tail heavy. tail heavy planes fly like $#!%. a plane will be more stable the further forward the cg is. as you move the cg back, the plane may become less stable at low speeds, and the elevator effect will change. that's why manufacturers give a nose heavy cg, so that the elevator is easy to control, the plane will float more, and will be more stable. But this cg is not intended for all types of flying and adjustment is sometimes necessary.

this plane is awesome and you will love it!!! it handles wind very well because of its thin wing and looks really cool with the long swept tail. The covering is also cool on it,