Here I go Lu:
The gamma rigging change of 18 degrees is there to KEEP the cyclic in proper phase so that forward stick is forward tilt. That is what happens on the Robinson, and the S-76. Period. The disk tilts forward when the stick goes forward. Got that? Do you? Have you learned ANYTHING in the interminable posts that you have sparked??
The stick does travel at an angle as you advance in speed, so when you get to cruise, it is a bit to the right. That is the STATIC TRIM position of the stick. Repeat that slowly, Lu. STATIC TRIM. That has NOTHING to do with which way the disk tilts when the stick is pushed forward. NOTHING TO DO WITH STICK PHASING. NOTHING. repeat that, Lu.
The delta 3 coupling of the rotor is on almost every tail rotor in existence. EVERY TAIL ROTOR. Repeat that, Lu. It is not some mysterious problem of the Robinson, Lu. It is not unusual, Lu. It does not make rotors fly off, or aircraft crash, Lu. All main rotors that have elastomeric bearings have some delta 3, Lu. ALL.
OK, what did we learn? 1) The static stick position does not relate to the control phasing. 2) The S-76 and the Robinson fly nicely with forward stick making the rotor tilt forward. 3) Lu is fishing around for some way to prove he is "right" about some crackpot theory that he discovered some bibical truth about Robinsons. 4) I rose to the bait.
What a way to start the day!
