Originally Posted by Pacmantwoskis
How can you claim this with such certainty? Is it possible that you are missing something that would create the rotation in the air that would not require rotary input, twisting, or pivoting by Ligety? I have never felt the forces at play during a WC GS transition (presumably you haven't either), but I do have experience with slalom transitions (obviously not WC). There is so much energy(pop) available, that I never need to rotate or pivot the skis. They come around rather quickly of their own accord, and I generally need to hold them back from coming around too much. An anti-pivot, one might say.
First of all I don't really care, because rotating in the air is not carving, and that's the only important point to the conversation, but since you keep insisting:
Newton's first law of physics:
I. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it
In the air, there is nothing external to the body to change the direction of the skis, but yet the direction changes. So, either the skis were rotated by the skier with a torque, or the skis already had angular momentum before leaving the ground. So, how can the skis get angular momentum before leaving the ground?
Does he have angular momentum generated from turning? Well he's leaving the ground in transition, so he hasn't built up any angular momentum in the next turn yet. Could he be bringing angular momentum from the previous turn? Sure, but the spin is going in the opposite direction. Spin direction is critically important for conservation of angular momentum.
I've stumbled across some of these debates where one group says there should be no rotary, but yet rotary is visible, so there's all these explanations about how rotary can be just a passive natural byproduct of carving. BUT, you are misusing those arguments right or wrong for this situation of when the skis are in the air. In the air, there is no passive pivoting due to for aft pressure or any other type of phenomenon. There can be no passive changes in direction of the skis in the air, and there is clearly no initial angular momentum in the proper direction. He would really have to be well into the turn before he goes into the air to get that much rotation just from his existing angular momentum, therefore he's twisting his skis in the air.
I've also seen on certain web sites how pivoting the skis like this is called low level skiing, so I see this as a bitter pill for you to swallow. But it's just not true. Great skiers pivot when necessary. Low level skiers are the one's that can't carve the top of the turn when necessary. So, let's not rehash that argument and say whether Ted made a mistake or not, but it's clear in that turn that the skis rotate in the air. It can only come from the skier in this example. It's not carving the top of the turn, so let's not use this video as an example transition for arc to arc carving.
Edited by The Engineer - 2/8/16 at 10:00am