dog-
It is my belief that the individual flapping for a teetering rotor blade is nearly nil, as the opposite blade would have to restrain the flapping force to make the blade bend, and this is unlikely. Of course, the coning of the blades would be appreciable.
For rigid systems like the Boelkow and the Comanche, we speak of equivilent offset, which equates the rotor head moment created by a rigidly attached blade to that moment an articulated blade would impart. We speak of the offset as a percent of radius, as if a hinge were at that place and the blade was attached to that flapping hinge. For a Boelkow, the equivilent hinge would be at 12 to 15% of span, for Comanche it would be at 11%. Most newer articulated systems have flapping hinges at 4 to 5% of span, so "rigid" systems are considerable stiffer than articulated ones.