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• (rhythmic music)

• - Hello, welcome to Kunstadt Sports.

• My name is Peter Kunstadt,

• and we are here today to give you

• an overview of skis and bindings.

• At Kunstadt Sports all our employees are athletes,

• and many employees are ski racers.

• Here with me is ZoÃ« Newell who is an excellent ski racer.

• A great person except for the days

• when she beats me in a race.

• - Today we're going to be telling you

• a little bit about how to select skis for

• your individual abilities as well as

• show you the difference between

• recreational skis, performance skis, and racing skis.

• Before we get started we need to go over

• the geometry of modern skis.

• First we have our ski length,

• that is the measurement from your full tip to tail.

• Next is your running length which is

• the point where the ski actually

• initiates contact with the snow.

• Next is our tip width

• which is the width of the tip.

• Next is the waist width which is

• And finally the tail width,

• which is the width of the tail of the ski.

• These numbers are extremely important on the ski

• because it helps determine the radius of the ski.

• - Over a decade ago the concept of

• a parabolic ski was introduced and that was

• definitely a revolution in ski design.

• The parabolic shape basically means

• that the edge of the ski is made in the shape of a parabola.

• And that in turn means that when a ski is flexed,

• in the flexed position the edge creates

• And that radius is then defined

• by the length of the ski, by the tip,

• the waist, and the tail width.

• - Another important concept in determining ski geometry

• is the camber and rocker.

• The simplest way to explain camber

• is if you were to take a piece of string

• and measure the distance between the string

• and the center of the ski,

• will determine the amount of camber in the ski.

• Another way to fully understand camber of the ski

• is with this demonstration.

• As you can see that both the tip and the tail

• are in contact with the floor and the center is not.

• The distance between the floor and the ski

• is your camber in the center.

• - The rocker, also known as reverse camber,

• is as the name suggests,

• the opposite of the camber.

• The tip, instead of being bent down is bent up

• ever so slightly.

• It's very hard to demonstrate on the type of skis

• that we have in our stock.

• The tip is lifted up to ease initiation of turns.

• - [ZoÃ«] We are now going to move on

• to specific categories of skis.

• These include recreational, performance,

• racing, and speciality skis.

• - Here are some examples of recreational skis.

• So what a recreational ski has

• is generally light weight, a short radius,

• and these skis are generally soft

• for easy operation, for easy skiing.

• Of course the price you pay

• is a little reduced performance

• but there is definite comfort

• in skiing on a recreational ski.

• - Our next category is performance skis.

• Performance skis are generally stiffer.

• As well as they come usually in

• a variety of different radiuses,

• depending on your skier performance as well as ability.

• They also come with a few more technologies

• compared to more of your recreational ski.

• Peter here will go over a few of the technologies

• in the Elan and Fischer skis.

• - Thank you ZoÃ«.

• Fischer came a few years ago

• with the concept of a progressive ski.

• The edge design is exactly what that name suggests.

• The edge is progressive.

• It is not a constant radius.

• There is a variety of radii in that ski

• to ease initiation

• and to have the ski feel

• like a cruising ski at high speeds as well.

• So it's a very good combination

• of easy initiation, easy turning,

• and high speed performance

• when that is required.

• On the other hand, Elan came up with

• a very innovative combination

• of shapes of edges

• and they call it Amphibio.

• The concept in Amphibio is that

• the active edge on the ski is cambered

• like a regular performance ski,

• and it feels just exactly like a performance ski.

• On the other hand though the outside edge,

• and now we have introduced a right ski and a left ski

• because we have to maintain an inside edge

• and a separate outside edge.

• The outside edge is rockered ever so slightly

• which makes for very, very easy initiation

• and also the feeling or the phenomenon

• of catching an edge is a thing of history.

• Catching an edge basically means

• that the skier stepped on the wrong ski

• in a turn.

• And the wrong ski, theoretically wrong ski,

• does not have that edge to catch

• because it's rockered away.

• So this is a very, very user-friendly ski,

• easy to initiate, easy to work with

• and still offering a very high performance.

• And last but not least, here is Atomic's Doubledeck.

• The concept of a Doubledeck here is

• that they added a piece of plastic on top of the ski

• that's attached to the ski loosely with elastomer.

• And what's interesting about it is

• that this elastomer gets engaged

• only when a ski is flexed.

• So as the ski is flexing, as the flex increases,

• the stiffness of the ski increases as well.

• And so the ski actually responds

• to the temperament and the style

• and the power of the skier.

• So the ski changes from an easy ski to a stiff ski

• as the skier

• increases pressure.

• - Our next category are race skis.

• Race skis are the simplest ski on the market today.

• They have a sandwich construction,

• basically meaning two sheets of metal

• and a full wood core stacked on top of each other

• with a very simple, stiff riser plate on top.

• Race skis generally are constructed with a full side wall

• as well as improved base material

• to make the skis go faster on ice.

• Our last category is specialty skis.

• Specialty skis are made up of a variety

• of different types of skis.

• First we have a twin-tip, which is what Peter is holding.

• A twin-tip is usually used in a park

• or if people want to ski backwards,

• they have a tip at the tip as well as

• a tip at the rear for easy backwards skiing.

• - Ideal for people who don't know

• which way is forward and which way is backward.

• - Next is junior skis.

• Junior skis are generally 70-130 centimeters.

• They are soft, usually about the softest ski on the market.

• Easy for turning and easy to learn how.

• Generally for most junior skis

• they all have pretty cool graphics as well

• to make it fun for the kids.

• Our next category is women-specific skis.

• Women-specific skis again are usually

• have better graphics, kind of zoned in for a woman skier.

• As well as they are sometimes softer

• for easy turning and easy skiing.

• As well as the biggest difference between

• a women-specific ski is going to be the binding

• is generally moved up

• for a little bit better balance points for a woman.

• - There are many other specialty skis

• that we are not going to specifics into here.

• But there are for instance mogul skis

• that are built softer

• without any carving shape.

• And they are soft so that the tips

• don't hit into the moguls.

• They're easier to maneuver in moguls,

• they're usually short and narrow.

• The other extreme are powder skis

• that are extremely wide,

• over 100 millimeters often wide,

• and very frequently they are rockered for easy turning.

• And of course in a powder situation

• there is no need for carving,

• and so these skis are not made to carve,

• they are made to float nicely in deep snow.

• And there are many other specialty skis

• that we don't mention.

• - Another very important factor when choosing

• a ski for you is the ski length.

• Ski length is very important in determining

• how the ski is going to perform on the snow.

• Generally a ski with a radius of 14 or smaller

• as seen here with Peter here.

• With a radius of 14 and under,

• it's a very small radius meaning

• very small turns on the hill.

• Having a shorter ski is a lot easier

• for you to be able to maneuver around your turns.

• A ski with a radius bigger than 14,

• you usually want to go about around your

• meaning longer turns.

• You need a longer ski to be able to

• Mostly for kids and beginner skis

• it's always good to have a ski around

• nose length and shorter.

• Makes it a lot easier for maneuvering

• as well as easier to learn

• how to ski on the snow.

• - The introduction of carving ski made it necessary

• to lift the ski boot off the ski

• to a certain degree in order to avoid

• the boot touching the snow

• when the ski is carving to an extreme point.

• This is achieved generally either by a riser

• that is added to the ski like here,

• or a combination of a riser and a binding

• that has a riser built in it as well.

• Practically all ski manufacturers

• introduced integrated binding systems.

• The advantage of an integrated binding system

• obviously first of all is that the binding

• works with the ski specifically and ideally.

• Of course the disadvantage to the user is

• that they lost the freedom to choose

• what type of binding would they select

• after they've selected their ski.

• Another concept that became necessary

• with the introduction of carving skis

• is the floating binding.

• It is necessary because of the decreased

• length of the ski for the whole length

• of the ski to be functional.

• And that is achieved by allowing the binding to float.

• In this particular case the toe is floating

• freely in the rail and so is the heel,

• floating freely in the rail.

• And the binding actually is attached to the ski

• in the center.

• So as the ski flexes both the toe and the heel

• freely float on the ski,