Quote:
Originally Posted by
BigE 
TDK6,
I had a nice reply, but hit the wrong button. Stupid Clear button does not have an "are you sure?" dialog box to idiot proof my intent.
The video contrasts tipping and angulation vs upper body rotation and inclination. Notice how each and every turn in the low edge angle turns begins with a rotation of the upper body. This suggests that the upper body rotation is a required component for inclined turns. It is not.
Instead of upper body rotation, you could use lower body rotation and steer/pivot the skis. (Actively rotate the femurs in the hip sockets). Then you would be comparing tipping vs steering/pivotting : "Turning the feet" vs "tipping the ski". Such a contrast would show turns being skidded using leg steering vs turns being carved by ski tipping.
Right now, the turns are too far apart to be fruitfully compared -- there are too many ways to get from the poorly rotated turns to the angulated turns you display. And, it ignores the middle ground.....
If the intent is to get away from the upper body rotation, then the steered version should be compared to the rotated version. This builds upper and lower body separation and independence. Tipping and angulation shows another form of upper/lower body independence -- it's not just about rotational independence. Once that is acheived the more advanced tipping/angulation can be explored against pure inclination -- and the skier will learn that even the tipped and angulated turns will have some rotation of the femurs in the hip sockets, just more "passive".
Hope that helped.
JASP,
I hope that you can see just how important it is to make sure that we understand precisely what the term rotation means here. Rotation about an external point happens in every turn. We rotate the body around the point that defines the the turn radius. It happens whether or not we are countered. But then the term counter-rotation makes no sense. So rotation and counter-rotation make sense only when we restrict rotation to an axis inside the body.
Edited by BigE - 6/29/2009 at 03:28 pm GMTEdited by BigE - 6/29/2009 at 03:53 pm GMT
Thanks for your input BigE and for focus on the video.
Then you would be comparing tipping vs steering/pivotting : "Turning the feet" vs "tipping the ski". Such a contrast would show turns being skidded using leg steering vs turns being carved by ski tipping.
My intent was not to show two forms of valid skiing and how they differ. My intent was to show a flaw and how to fix it. The flaw is upper body rotation and hips wondering out in the turn. The result is low edge angles and skidding ski tails and skis. The fix is hips into the turn, angulation. On the same video taking but not shown in this particular clip is a bunch of different ways of tipping the skis onto their new edges. Including flexing the inside ski, ancle tipping, angulation, counter, femure rotation and a blend of many things. In the same taking I tried to simulate rotation and how that would affect the turning and the result is IMHO very dramatic. I think the video is great but I only need to tweek the presentation so that it would make sence to my audience. Thats where your input comes in. This is not about how good/bad skier or instructor I am, its about how well you can help me.
Inclination is a word used to describe how much the skier leans into the turn. Inclination is an angle between two planes. In this case the two planes would be represented by the snow and the skier. It has also taken the meaning of an totally erect body. My intent was not to couple "inclination" with bad form since has been, it can be and is used sucessfully in skiing today but it is not a movement with which you can replace angulation. No good skier using inclination cannot and will not angulate ever. Its just that they dont "need" angulation in a specific situation. Or they think they dont need angulation. Or they are just lazy. Or their skis are too sharp. KISS: "Good inclination" would be "no need for angulation" and "bad inclination" would be "need for angulation". Very ruffly offcourse. Bad inclination is also refered to as "banking". In my video I couple "upper body rotation" with "banking" because if you know how to angulate you dont need upper body rotation to initiate a turn and rotating your upper body does nothing to your skis if you are angulated. Actually that could be a very advanced move but in this case people rotate into the turn to make their ski tails skid. And this happens since rotating their upper body into the turn drags their hips in the opposite direction of center of turn and causes flattening of the edge angles which causes skidding.
So my video contrasts tipping and angulation vs upper body rotation and "banking".
Correct me if Im wrong but actively rotating my femures in my hip sockets does not require steering/drifting/brushing/skidding skis. By actively rotating my femures in my hip sockets I can apply torque to my arcing and carving skis and crank them into a sharper turn than what I would normally do. Its all on the media not shown here. Maybe I should redo the video with that kind of turning insted of the one done by angulation. However, my intent was to show how simple use of hips can boost your skiing. At all levels.
One more thing about rotation. There is one more rotation that you do not recogize in your last paragraph. IMO a situation where the hip radius is increasing but the ski and upper body radius is not. This occours only momentarily before this kind of divergence of body parts rotating arround an external point starts to come apart. Any thaughts?