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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 Zoë 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
a few concepts that'll help you understand
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
the width of your waist of your ski.
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
a regular radius or a continuous radius.
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
from your tip of your ski to your tail
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.
- [Zoë] 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 Zoë.
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
ahead on the ski about a centimeter
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
will be a length to about your nose,
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
height of your head.
This means your radius is a lot bigger,
meaning longer turns.
You need a longer ski to be able to
support your entire turn.
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,
thus letting the ski function completely
over the whole length of its edge.
Now that you have selected your skis and bindings,
it's time to select your boots.
There is a follow-up video on boot selection.
When you have selected your boots, skis, and bindings,
then it's time to get your binding
adjusted to your boots by a professional technician.
Here at Kunstadt Sports, all our technicians
are licensed and highly professional.
- If you're still in doubt
please check out our website,
for local on-snow demo days
where you can try out our skis
and see which one works best for you.


Ski and Binding Guide

225 タグ追加 保存
alex 2017 年 2 月 12 日 に公開
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