RE: U Can Do 3D
rajul, I have my tank at the cg, and am balanced at 6 1/4" it fly's great with this setup. I am thinking of going back a little more. The only downside is a deadstick landing. It wants to balloon a little when it gets in ground effect. The upside is better tumbles and easier hovering and torque rolls.
BTW saito 100 w Cline regulator apc 16-4 w prop is awesome!!!
Dave