""D) If you can accept the possibility of there being an 18-degree offset in the controls when flying forward to compensate and allow the helicopter to fly forward then, you must understand that the pilot has inputted right cyclic to accomplish this. If in the recovery from a zero G incident the pilot pulls the cyclic aft in accordance with the POH he will have a right bias in his control input. It is this right bias that will add to the already prominent right roll and cause the helicopter to violently roll to the right. It is at this point experience comes into play. The highly experienced pilot can load the rotor and keep rolling the helicopter and bringing it back into stable flight. The inexperienced pilot will try to correct the roll before fully loading the rotor and cause mast bumping. Any application of left cyclic during recovery from zero G will result in mast bumping and under normal recovery from zero g there is a right roll component. If the 18-degree offset comes into play the condition will be further exacerbated.""
OK Lu, reread the above please, I quoted from your post. I'll clarify. The whole point of not adding lateral cyclic during negative G is that it will NOT, EVER, FOR ANY REASON, roll the aircraft, it moves the disc independantly of the fuselage and can, if severe enough, result in mast bumping.
Assuming you hold the stick perfectly still laterally, the disc will sense a right cyclic input as zero G is encountered, the fuselage rolls, and the positional relationship between disc and fuselage changes. This doesn't kill you. Keep in mind we are talking about a very quick sequence of events. See below:
OK, the disclaimer, DON'T TRY THIS AT HOME!
If the a/c is pushed over into zero G with cyclic and the pedal is pushed hard right what happens? No roll, just a really scary feeling. The disc doesn't commit a hairy fit. If the left pedal is not taken out the roll is extremely rapid and will scare you. Unless you are mentally prepared for it you will instinctively react with opposite cyclic and die. Any procedure written into a manual is written for "THE LOWEST COMMON DENOMINATOR". I've helped write some of these rules/procedures and that's how it works. If you write in the book to add left cyclic and the intent is for a 1/4 inch movement, good luck, it'll never happen.