Transition could be defined as--
- Arc changes from left-hand to right-hand (or right-hand to left-hand)
- Edges cross zero edge angle.
- CG crosses center of stance.
I guess 1 is probably the best definition. Then the question arise, do the other two transitions happen before, at, or after the 1?
I've reach a bit of an analysis conundrum. Consider the the diagram below. Say this is the side view of the hill at transition. Say that the red dot represents the center of the stance equidistant between each ski. The blue got is directly above. If you were standing still, in static balance, the blue dot is where your CG would be. Now lets say you are skiing. The green dot is the spot at 90degrees to the hill of the red spot. Should your CG be here? If so, your CG would have had to cross the center of the stance before edge change. The only that could not be is if you did some really funky angulation down the hill at transition. I thinking in dynamic skiing, you can have your CG at the green dot and have your CG pass over the center of your stance ahead of transition an momentum will take care of everything; you skis will turn and catch the force of your CG moving down the hill and put you in balance. But skiing slowly, do you actually have to somehow break the sequence of all transitions happening at the same time?
It seem to remember Bob Barnes having some sequence drawings of top and side view through a couple turns. Maybe they would help clarify but I haven't seen the in a long time and I don't remember what sequence of the three transitions they indicate.