Zag, I got mine already built from a buddy. The print didnt say where cg is, the manual prob does but I dont have it. I have a 55ax in mine. You can start setting cg about 30% back from leading edge of wing. You can move it from there to your liking. Plane is light,flies light, if youre off a bit it wont be hard to manage like some planes would be. My bud flies it backwards on windy days, its crazy!! A Blast to fly!! Hope this helps.