Its obvious what I posted was related to a full scale heli I was just basically posting the "definition"(s), of the terms, because I haven't heard of them & figured maybe someone else hasn't. I never said the same phenoms could happen with a rc heli, although scale to scale I believe there has to be some similarity. But I'm new to this stuff still, and just started to read today in depth, about the physics of how a heli fly's. So I guess my opinion doesn't count for too much Its very obvious that rc helis can do much more than a full scale heli. So these phenomenons may occur without fully realizing it because the rc heli can handle "the pressure" better. Just a rookies 2 cents which probably aint worth much