To: Try Cyclic
On the Robinson rotor system the only way you could get the delta effect is if you move the blade in relation to the rotorhead.
If you do it the way you described and you displaced the rotor in the same manner as the Bell then there would be no pitch change.
On the Bell however, if you do the same thing and the pitch horn is not coincident with the teeter hinge then you will get some change. If you were to raise the collective on the Bell and the differential between the pitch horn and the teeter hinge is less then the pitch change is less. The design of any rotor head is to get the pitch horn/pitch link attach point as close to the center of teeter or flap or, cone in order to minimize pitch coupling when the helicopter is flying.
On the Robinson, the blade must cone (flap)
in relation to the head to get a delta hinge effect and the greater the displacement of the pitch horn and the cone hinge the greater the coupling.
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The Cat