"A level 45 degree turn has a loading of 1.41 G's, or a level 60 degree turn - 2 G's"

G force is a function of speed and turn radius, not bank angle. I can make a turn banked at 45 degrees and have 1 G or 9 Gs depending speed. A change in direction is an acceleration, and that is then divided by 9.8 to get the factor of normal gravity you feel.

To get turn radius, you need either degrees per second and speed, RPM, or the arc length of the turn.