This thread compels me to share the following <g>, I was instructing a Marine in TA-4's and we were on a standard student defensive 1v1 bfm hop. I would always look at the studs head after I had the tally ho to ensure the kid kept his head on the bandit since it was a common error for them to lose sight or look away from the bandit after the intital turn. Since the setup requires the bandit IP to intentionally overshoot to teach the counter turn to a flats or roller, it gives the IP a moment to look away from the bandit and watch the stud keep there eyes on the bandit. You can feel the correct g's the stud puts on for the initial defensive turn.
On the first set, the stud has a speed, angels,tally with the bandit, I have a tally, so I turn my head to watch the stud as the bandit calls in, stud does a great nose low turn with his eyes on the bandit. So now is where I turn my head back to the bandit to judge the overshoot response when suddenly the airplane starts arcing (relaxing the g), and badly. wT*? Call KIO, (knock it off) and ask the stud Wassup? He mumbles something I don't understand. Oh well, Turn in the MOA and set up again. Don't arc is all I said.
Repeat set up as earlier. As he is arcing this second time, I am surprised because he has a reputation as a good stick. Bandit IP calls the KIO in frustration, and we set up the third set. I asked again wT*? Why are you relaxing the 'g' in the turn?? He mumbles something. Oh well. My third hop for the day, I'll just watch his helmet a little longer on this setup to see if they clues me into why he suddenly starts arcing in the turn into the bandit. After the tally, the stud does another great initial turn on the bandit. Good, on track, now I normally turn my head to look at the bandit here, but I watch his helmet just a bit longer... He hits the bayonet fitting on his mask while in this 5 g turn, and pulls a sick sack and starts hurling while still trying to fight the bandit. Naturally, as he pukes, he lets off the pull. Ahhh, now I know why he is arcing!! Puking in a nose low high 'g' turn. Yep, that will cause you to arc a bit <g>. I call the KIO. Take the plane, ask him if he's OK. He says after a few moments of fumbling with the contents he produced that he is ready to fly! No kidding, said lets go home, but he wanted to continue the flight <g> It is a testament to his warrior heart to want to continue to fight while puking at 5-6 g! It still cracks me up, turned out the flt surgeon just gave him a med up after a cold, he still had some congestion in the head.