I must admit I am not a regular on rotorheads but as a CFS (H) Sqn staff chap with quite a bit of POF experience, I thought the explanation at the top of the page was brill summing RB Stall in one quick post. This chap Lu is WRONG, he says we are all entitled to an opinion, yes we are, he is WRONG however. Gyroscopic Shymoscopic. Let him deny all day, there are people in this world who will not accept they can be WRONG. Don't get stressed and slag him off because he is WRONG, he is entitled to his input. We all make mistakes,don't we?