Originally Posted by borntoski683
Kinetic chain means movement of one body part causes another body part to be pulled or pushed, because its connected. So, for example you can move your knee inside by twisting your femur. Doing that might cause your foot to rotate or tip depending on how you do it because of the kinetic chain connection. However it does little to pull on your hip in any way.
Conversely If you start the original movement in your ankle, inverting it. This moves your tibia out. You try it yourself, if you drive the movement from your femur then the hip is left behind. If you drive the movement from your ankle and maintain some tension in the femur area, the your hip is pulled inside also, which pulls your other half across and tips the outside ski.
Driving this from the ankles is key. It's not to say the knee won't move. Read my previous post again if you are still lost in that point. The question is where you are driving the end of the kinetic chain from, which muscles are being used to do it makes a huge difference.
Try it boys
Student perspective: I'm sold on this because I've found that it just works for me in at least two specific ways.
1) It's the one movement I can rely on to start a clean arc right now, even at jogging - okay, running - speed, requiring no big forces work with.
2) When I start from the bottom up, I'm MUCH less likely to rush or over-ski the turn. My angulation and counter build naturally, and I'm much less likely to lose the outside ski on a patch of ice because I'm stacked over it much better. It all just feels right when I do this. (And yes, I can hear a certain faction groaning, saying, "You can't trust how you feel. You can only trust video." Yeah. Whatever. I guess if you have piss-poor internal feedback mechanisms. I do totally trust and value video, but it is possible to perceive and self-correct without it if you're really paying attention.)
The feet-first thing doesn't come naturally to me. It's also not something that I see right away when I watch really good skiers, live or on video (unlike, for example, hand position), so it doesn't insinuate itself into my movements as a result of modeling. I use the really easy slopes and cat tracks to make turns with JUST ankle movement - a much less extreme version of BTS's drill above. Once I get in the groove with this, I start trying to accelerate the frequency of the "wave." (I find that while I can make sparse shallow turns with less than ideal posture, I can't turn up the frequency effectively if my hips, hands, and/or shins are the slightest bit back.)
I was out on the hill yesterday all by myself, trying to get used to a pair of 23m skis. It was a total blast, but does require some patience if you're used to 15m skis, like I am. So I was thinking about this stuff a whole lot. It all came together when I finally started keeping my hips forward through the whole turn (mostly, barring hiccups), paying more attention to the inside hand, and especially starting everything with just ankles. In one of these threads, @HeluvaSkier (I think) was talking about how he spends a lot of the turn, time-wise, with relatively low pressure. That sounds right to me, and is another thing that seems to me to happen when I focus on the ankles: The first part of the turn seems to take for-freaking-ever. The movements seem so puny and ineffectual at first, in comparison to the picture in my mind's eye of what a honking turn looks like. I start thinking I'm never going to be able to get flexed down to the higher edge angle / tighter radius I want. Then very quickly my inside leg is tipped nicely out of the way and I'm railing around the corner with good balance, ready for the transition and done. By contrast, if I get careless and forget the ankles early in the turn and try to start with the knees and hips, by the belly of the turn I'mIless countered, insufficiently tipped on the inside, reaching with the outside foot but not really engaging it as effectively, slow to carve out of the fall line, and poorly prepared to retract for the next turn.