On Feb 28, 5:21 pm, a wrote:

I am clearly missing something here. I use the control surfaces to
roll into a turn, then return them to neutral and trim away the back
pressure once the desired bank is established in a coordinated turn. I
don't think in that case the airplane knows it's in a turn. The G
vector in normal to the wings and the fuselage centerline, but we
will of course be experiencing more than 1 G.

Are you using any rudder in the established turn? If not, you either
have a very tame airplane, or the turn isn't quite coordinated.

Introducing bank causes the airplane to move sideways, and the fin and
rudder resist sideways movement so that the nose is forced to change
direction. Therefore, there is lateral force being generated by the
vertical surfaces and a vortex will be produced.

Dan