With all due respect. Our opinion around here is that too many factors come into play when using inverted flight as a CG check. We feel its inaccurate .

Things like the airfoil of the wing, incidence of surfaces, angle of engine.

After you have given it your best guess on the bench...


One of the things we use to give a fairly good indication of good Cg location is the elevator position after the first flight once relatively level flight is found with trim. Near zero is good. Another good indicator is upon landing. If the model doesn't do anything you didn't want it to do, your pretty close.

Aside from a stall due to one hanging on the up elevator trying to float a warbird like this in
upon landing.

CMP is not known for accurate CG locations normally, but it worked for Ram44, plus the ability for Ram44 to keep the anxiety level down. Something I still issues with when flying.



Just a thought

Steve