Lu
>"If I understand your point above you refer to the horizontal displacement of the pitch link /pitch horn connection in relation to the hinge line. "<
Yes.
>" If that is what you mean the point of reference can be several feet outboard of the hinge and still not make any pitch change if the two points are coincident with each other."<
I don't fully understand the above sentence. Perhaps you could elaborate.
Using the Robinson R-22 as an example; only because it has two types of hinges. If the blade 'teeters up' then pitch will be removed. If the blade 'flaps or cones up' there will be no change to the pitch.