Tuesday, March 24, 2009

Are Your Skis Keeping Up With You?

In my last post, I went over some of the basics of ski design and engineering and how these characteristics affect your skiing. Now, I am going to brag a little about my latest ski purchase, a set of Rossignol Radical RX 9's. I bought them from Mike Stewart, one H-E-double hockey sticks of a skier - a Level III PSIA at Wisp Resort and a Rossignol sales rep.

Why did I get these skis? A few reasons.

First, they have an amazingly chick-picking up color scheme.

Second, they have some physical characteristics I like too. When I was looking for skis this year, I wanted something with a stiff tail end and low torsion. Translation: the rear (tail) end of the ski does not flex or rotate much. What does this accomplish? This absorbs energy throughout the turn and then releases at the end of the turn, resulting in a turn that "shoots" you out at the end. Bottom line, I wanted something that would rip. These did the trick. They also have a sidecut radius of 13 meters - can you say tight turns? If you are more of an advanced skier who is looking for some skis that are speed demons, super responsive, and carve up the whole mountain, these are the type to get. Tell your ski shop that you want a low torsional, stiff tail. I also went up 5 cm in length from my previous skis to 165 cm. This lets me go a little faster. All I have to worry about now is controlling these rockets on my feet. These things are a blast to ride on.

Also, I want to point out that these skis are a 1-2 year old model. You do not have to have the newest high end skis to get great skis. I found these, demoed them, felt how they performed, liked them, and purchased them. Done deal.

Are your skis keeping up with you? If not, it may be time to visit the ski shop to look at some newer skis.

Monday, March 16, 2009

How Ski Technology Affects Your Skiing

I have been hearing many questions lately about ski equipment.

Does it make a difference if I use short or long skis?
Old or new?
What really is the difference in equipment?
How much does it really affect my skiing?

Although most people think that equipment doesn't really affect performance (and to a certain degree this is true), rapidly changing technologies in skis have made staying up to date with equipment more important than ever. More and more, the equipment you have is starting to make a difference in performance.

From Long Skis to Short

The majority of ski equipment questions arise from the good old-fashioned long, straight ski to the newer shaped and shorter skis primarily in use today. Around 1990, skis started to come equipped with shaped, or parabolic, edges as opposed to skis that had very little sidecut to them. That is, older straight skis had a nearly constant width from the tips to the tails. Newer skis typically have a wide tip, narrow waist, and wide tail.

Now, what does this do?

The reason that shorter shaped skis came about are because of the easier turns that are made possible. Long gone are the days of measuring your ski height by holding your arm up high and buying skis that came to your fingertips. Nowadays, beginners use skis from chest to chin height, while more advanced skiers typically do not ski on boards longer than their own height. The shorter skis allow more better control of the skis, thus making turns and maneuvers much easier. Try going out sometime and skiing on verrryyy short skis. Although they will be a little less stable and feel somewhat flimsy, you will find it almost too easy to turn your skis. The appropriately sized skis can put the dream in dreamy skiing. The sidecut in a ski also accomplishes easier turns. If you layed a shaped ski with sidecut down in the snow, it will actually turn by itself. The sidecut causes the edges to catch in the snow and thus turn the ski. Compared to straight skis, these new shaped slabs of skis will rock you into a whole new ski generation.

While ski size is the most important factor in the equipment, there are other mechanical characteristics as well. Torsional stiffness, ski flexure, and other properties determine how your ski will react to your movements and the snow. Racers like stiff torsion in the tails to transfer a maximum amount of energy into their next turn. A small sidecut radius allows tight, carved turns. It is these elements of your skis that allow you to rip down a mountain while somehow miraculously staying upright on size 160 shoes.

Tuesday, March 10, 2009

Balance - The Foundation for the Rest

If you have ever been in one of my lessons, you know that I always preach "balance" as the key to skiing. It is the first thing I teach, no matter what level the lesson. This skill is important if you are skiing the small mountains or the luxury ski resorts. Balance incorporates all of our movements in skiing. Without good balance, we are not able to make effective ski movements to control our skiing.

If you play any other sports, many of the movements are the same and will be easy to relate to.

There are a few parts and key things to focus on to maintain a balanced stance throughout your skiing:

1.) Feet width - Ideally, you want to position your feet so that they are shoulder-width apart relative to one another. This is most people's body's natural stance. In women and children, the stance will tend to be slightly wider (feet are further apart) due to the anatomy of the pelvis and femur (upper leg) bones. You can practice this anywhere - at home in front of a mirror, in the lift lines or on the slopes. By giving yourself an appropriately balanced stance with good feet width, you will enable yourself to make better movements in your skiing.

2.) Ankle flexion - This is quite possibly the most overlooked skill in advanced skiers. Ankle flexion is a very important movement in maintaining proper balance during any type of skiing. The movement you want here? Imagine you are taking your foot off the gas peddle in your car (or off the brake if you are a speed demon). Flexing the ankle so that your toes point towards the sky is called dorsiflexion. You want dorsiflexion in both ankles while skiing, especially throughout your turns and especially on your inside ankle. By incorporating the apprpriate ankle flexion into your skiing, you will allow your legs to make more natural and effective movements that will result in smoother and more effortless turns. Conversely, you do not want to push down with your ankles/feet, producing plantar flexion or extension of your ankles. This often happens if your are pushing down or trying to pressure your outside ski during a turn - avoid this!

3.) Knee flexion - While "bending your knees" is probably one of the oldest sayings in the book, right next to "lean forward," proper knee flexion is essential to maintaining good balance in your turns. There are two types of knee flexion you may have: horizontal and vertical. When you bend your knees, and your femurs (thigh bones, as I've heard it said) become parallel to the ground, this is horizontal knee flexion - your upper leg is horizontal, like the picture to the left. Horizontal Knee Flexion - Notice how the skier's upper legs are closer to parallel with the ground and that the hips move backwards relative to the feet.

This is bad. When you have horizontal knee flexion, your hips will revert backward and your weight falls instantly backwards. I don't need to tell you this is bad - afterall, you always want to "lean forward!" When you bend your knees and your upper leg is perpendicular to the ground, this is vertical knee flexion - Vertical Knee Flexion - Notice how the skier's upper legs are more perpendicular to the ground and the hips are directly above the feet.your upper leg is vertical, yet your knees are still bent. The picture on the right shows this. That is what we want. When you have vertical knee flexion, it positions your body in a central stance while still properly flexing your joints.

4.) Eye contact - Make sure you look where you want to go. This means in front of you, not looking down at your skis, not at the tree 20 feet ahead of you. Have you ever been walking in the mall or on the sidewalk, been looking at a window showcase, and before you realize it you start walking in that direction? Same thing applies here. Your body will naturally follow where your eyes steer. Therefore, when skiing, focus your eyes on the apex of your next turn, around the tree, so that your body will go that way. This is something especially important to teach beginner skiers while they are getting comfortable with their new five foot long feet, but it is also something that expert skiers need to revisit every once in a while.

5.) Body alignment - Although it may seem obvious, you always want to make sure you are keeping your hips and upper body aligned and directly above your base of support, your feet. Not to the front, not to the side, not to the back. Many advanced skiers are guilty of violating this rule when they try to get very dynamic and flashy in their skiing. You try to get on a high edge angle by leaning your body to the side. Here's a little test to see if this includes you: Ski on an easy green trail. Try making wide, super G turns now, but going very slow. When you try doing this at a slow speed, you will fall straight over the side of your skis. Now, make sure you get up quickly and brush the snow off to make sure no one saw... We often get away with leaning our body sideways at high speeds because our speed and momentum are able to keep us upright. The lesson: make sure your hips stay on your center axis, your midline. They can move slightly, but should not cross over the vertical planes created by your skis. Also, for fore-aft balance, it is easy to tell if you are off-center in your skiing when either the tip or tail of one of your skis lifts in the air during a turn. Make sure you keep your whole ski in contact with the snow. This will maximize your balance, style, and control on the slopes.

Those are my top 5 balance tips. If you have any more or would like to comment on any material, please do so! Focus on these out on the hill, and you will see yourself in a more balanced position while sking, looking more graceful to the chairlift viewers above, and skiing more in control. Nothing feels better than that.