ORIGINAL: bodypilot
Not trying to hijack this thread or anything. I took a eyehook screw, and screwed it right into the top of my wing of my Nexstar at about 25-30% CG. When I hang the plane by this hook.... In order for it to be perfectly balanced, I should basically take a torpedo level to the bottom of the wing, since its flat, and make it a dead bubble? Correct? The bottom of the wing should be level?
No not correct. most trainers have a positive wing incidence. The datum line must be level, this is usually shown as a line on the plans, and is generally parallel with the hoiz stab. The balance point is about on the spar so I wouldn't screw anything into the spar. The easiest way is to put two small pieces of tape on the bottom of the wings at the balance point and see if the horiz stab looks level.