Originally Posted by bud heishman
Ok, I am getting closer to grasping "brushing". So, if I tip the ski slightly and stand in the appropriate spot, I can use the "self steering" capabilities of the ski to make it turn without any rotary input. Is this it? This makes sense to me.
Yes some of what you're saying is right, but I want to emphasize that the verboten phrase of "brushed carving" is actually meaningful, not just the word "brush", but "brush" and "carve" together. The word brush alone can simply mean the ski is somehow brushing the snow rather then slicing it...in other words...skidding. I guess my distinction between the word brush and skid MIGHT be that a brushed edge is engaged..has pressure, is producing significant reactionary centripetal forces...but is just not angled enough to have critical edge angle...so it brushes rather then slices. Where the word skid might be a bit looser definition regarding load. a skidding ski can be fanning sideways, losing engagement, hardly any centripetal forces produced. A brushed edge, on the other hand, has significant centripetal forces being produced by loaded engagement and pressure.
but anyway, we can get skidding from a lot of different mechanisms, including twisting the ski. Brushing with engagement and it becomes significantly more difficult to actually twist the ski on the snow. More likely you can push the tail out if anything under load like that. Twisting a ski tends to flatten it into more of a skid, and compromises the very engagement required for centripetal force creation. I wouldn't call that brushing, but there is some grey area there.
Add the word "carve" to the phrase and it does take a more refined meaning, which is to make all the same bio mechanical movements as carving, but allow the edge to brush rather then slice by not achieving critical edge angle. In this light, brushed carving is to create the most optimal reactionary forces you can make, with strong edge engagement, but holding back the tipping just enough to void edge lock slicing...and basically in this mode, twisting the ski is counter productive. Twisting the ski will destroy the edge engagement and revert to more of a flattened, skiddy non-engagement.
Originally Posted by bud heishman
However, Please help me visualize how the skier would move from and christie into a wedge opening and how the skier would go from a wedge opening to match into a christie using brushing without any rotary movements?
Ok regarding wedge christies.... First I must clarify that I do not teach wedge christies to students ever. I teach them wedge turns first and then we start working on getting to parallel and I focus on getting them to parallel. This may involve them going through a wedge christie phase, but I do not teach them the intricacies of how to perform a beautiful wedge christie, because a wedge christie turn entry is nothing more than late tipping of the inside ski. This is what we saw some demonstrators doing at inter ski this year, not by design, but nonetheless, they were doing wedge christies with their wedge entries due to late inside foot activation. In order to demonstrate a beautiful wedge christie demonstration for exam purposes or whatever, you just have to be late with the inside foot tipping.
Let me go on about beginners...
I teach them movements which hopefully are going to lead quickly to parallel skiing with very little time spent in the wedge christie zone. Most of this focus, at this stage will be on activating the inside foot sooner so that it tips to the LTE before the outside ski can tip to the BTE. students at LIII which are stuck in the wedge zone basically don't want to let go of the BTE of that inside ski. I will spend almost the entire lesson with them talking about the inside foot and getting it to the LTE, that is the entire focus. Once they get the inside ski to the LTE, it generally matches itself with the outside ski very readily and quickly, it doesn't need to be rotated per say, the main thing is they need to get it off the BTE and at the very least flattened, but even better, actually on the LTE at least a little bit. So my focus is on activating that inside foot, the sooner the better. If possible, before the outside ski is even rolled onto the BTE. This will lead very quickly to parallel turns, there is no need for a wedge christie phase. But some of them will struggle with this movement and they will go through a wedge christie phase anyway, because they are simply stuck on not being able to get off the BTE of the downhill ski before the BTE of the uphill ski, so they will have a wedge entry, and unless they can get to the LTE during the turn, they will probably use some rotary to un-wedge the inside ski once the ski is flat.
I view wedge christies as being nothing more than a parallel turn with deficient/late inside ski releasing and tipping. I will explain that in a minute, but suffice it to say that I feel if I teach them to release their downhill ski and focus on that, they will arrive to parallel skiing more quickly. They may go through a wedge christie "phase" as initially their release will be slow, delayed, lazy, deficient, or whatever word you want to use. So their outcome may be a wedge christie entry for a bit. If they don't learn how to tip the inside ski first, they may have a wedge entry for the rest of their ski life. I'm sure you have seen many ski instructors come past your nose that have wedge entries. This is why they have it. A wedge christie demonstration need be nothing more than that problem, exaggerated with finesse.
So let's talk about what it takes to make a beautiful wedge christie demonstration, which I have been required to do for certification purposes. First I think a fundamental aspect is that the uphill ski must not up-stem. the uphill ski needs to turn into the fall line and the downhill ski needs to turn into the fall line at a slower rate. This forms the creation of a wedge, not suddenly, but kind of gradually as the high-C section of the turn happens, the skier turns into the fall line and the uphill ski basically turns faster then he downhill ski, forming a wedge. You might view this as some kind of rotary control, and I know many who do, but I view that as having very little to do with rotary other then keeping the hip socket lubricated so it can happen.
When I do a wedge christie demo, I treat the uphill ski exactly the same way I do for basic parallel. I allow it to be tipped and engaged and it brush carves itself into the the fall line. No pivoting. No twisting. No pushing of the tail up the hill. Just tip it, stand on it, allow it to brush. It self steers into the fall line. Now in a basic parallel, that is exactly what I do also, but the difference is that when I do basic parallel, I focus a lot on releasing the downhill ski by untipping it off the BTE and tipping it to the LTE side BEFORE the uphill ski. This movement helps to pull my hips into the turn, which helps to create tipping on the uphill ski for sure, but mainly it gets the inside ski untipped off of the BTE and established onto the LTE. So in basic parallel, i do this inside foot tipping FIRST. And the skis remain parallel as the outside ski does most of the work, I'm standing with most of my balance on it, and it brush carves into the fall line with the inside ski going right along with it on its LTE.
In a wedge christie, the the uphill ski is tipped to the BTE first, the releasing and untiring of the downhill ski is delayed. This causes a wedge entry to happen, in this case by design, unlike the inter ski demos we saw where they had wedge entries by mistake in many cases, and countless instructors I'm sure you have MA'd, that also have tiny wedge entries happening that they have learned to ignore. I have very proficient skier friends, whom I would consider expert, that when slowed down to super slow basic parallel mode, a wedge entry will surface. This is not as visually apparent at faster speeds, though its there too, but at super slow speeds, there it is blatantly. They are late with inside foot activation, they are too quick to get to the BTE of the outside ski, so they end up with a wedge christie.
Exaggerate that on purpose and with skillful finesse, and you will easily have a nice wedge christie demonstration, no rotary required.
I do agree on one point though, FINISHING the wedge christie, you might need some inside rotary to match the skis at the end. The reason is because from a wedge position, once it is formed, its very very difficult to get that inside ski all the way to the LTE because of the wide stance. At best you might get it flat. Then some rotary will be needed to bring the tail in closer to the other ski. Once its in close enough to get to the knee out far enough to make the ski flat or more to the LTE it can start to match itself without rotary input. But getting from a large wedge to matched parallel will be very difficult without at least starting out with some rotary of that leg. If the demonstration is done with not as wide of a wedge, then this is less the case and the ski can be tipped to the LTE and it will mostly match itself to parallel once its to the LTE. This is because a narrow wedge is also a narrow stance, so its possible to get the knee outside of the foot.
But all in all, this isolated inside foot rotary to un-wedge the wedge...is a corrective procedure, its not a good and useful movement in parallel skiing. So my focus will rather be on tipping the inside ski to the LTE as early as possible. That does everything and when they get to where they are doing that before the outside ski becomes edged to the BTE, they will have parallel turns. When they are still learning they will have wedge entries because they are late with it. A PSIA demonstrator can intentionally be late and basically do basic parallel with exaggerated inside foot lateness.
Originally Posted by bud heishman
Regarding your last statement above, I can see your point, but also see this "counter acting" being suspiciously similar to skiing into and out of counter. If we look at the body along it's vertical axis, there is some twisting here. Passive or active, it does not matter, there is rotation around that axis. It is not on the frontal plane, it is not on the sagittal plane, it is on the transverse plane. To me any movement on the transverse plane would seem to involve a rotation or twist? Active or passive.
Not entirely sure which comment you're referring to, but I want to emphasize again, that counter-action is not necessarily a twisting movement. It is not around the spine. If anything it is around the femur head socket on the outside leg. It is not a twisting muscular motion to make it happen. You use pressure under the outside ski as leverage and pull the inside hip up and forward. Its totally different muscle activations then typically sought after for twisting the femurs in the hip socket, making bow ties in the snow, etc.