Letsby Ave,
whether or not what you just said is b*ll***s, I'll let you decide!
But I will say that the 'offset hinges' on the R22 are neither Delta 3 hinges nor flapping hinges. There is a delta 3 angle designed into R22 rotor head (18 degrees - see Dave Jackson's link) but there is no Delta 3 hinge per se (unlike the tail rotor). They are in fact principally coning hinges although whether or not there is a small element of flapping to back up the teetering hinge as I think Nick is suggesting I will not venture an opinion. My brain cells only do so much work on a sunday morning before they go on strike!
As an aside, if the changing of a blade's pitch angle due to flapping is called 'pitch-flap coupling' (because of Delta 3 angle), what do you call the changing of a blade's AOA due to flapping? AOA-flap coupling?
That's it! Brain cells on strike!
Ciao!
Irlandés