Skateboard (Extreme sports). Skate

Skateboard: Skateboard project can be described as extreme sports history, the originator of many extreme sports skateboarding project by project extends from. The late 1950s early 1960s by the surfing evolved skateboarding, and have now become the planet's most "cool" movement. Skateboarding skills include: The AerialL (the slider), The Invert (U-platform), The Ollie (jump with the board), these techniques can be said that in addition to the flap of the most important slide action. The world's two major skateboard International organizations: International Association of Skateboard (INTERNATIONAL ASSOCIATION OF SKATEBOARD COMPANIES, IASC ) and the World Cup Skateboard (WORLD CUP SKATEBOARDING, WCS).

Why look at the others skateboard jump skateboard can close when a foot take off together?

Even to talk about skateboarding, Nutshell interesting - in a Nutshell

Introduce myself, I am 93 years from the beginning of skateboarding, be among the first, limited basic level but still solid. I try to explain bluntly, some scientific description of the principle is certainly not accurate, but it probably means there is nothing wrong.

Skateboard jump known as Ollie, allegedly by a man named Alan 'Ollie' Gelfand riders invention (skateboard action accustomed to the inventor named), before skateboarding skills mostly by means of props, or by hand assisted jump, or simply affixed to completion. Start from Ollie, skateboarding started from the ground, resulting in today's mainstream high Piaoyuan trick mode.

Ollie is mainly through a series of leverage and some sliding friction (disgrace start ...... These scientific principles described only as an aid to understanding, not accurate, according to the head Paizhuan welcome).

Let me talk about the slide structure -

As you know, the slide structure is a piece of wood and four wheels connected by a two-axis configuration (as shown, slide the back) images from Skateone.com - the Powell Peralta Skull and Snake Complete Skateboard Gray - 7.625 x 31.625.

This is a current mainstream "Double Wings" skateboard. Viewed from the side, slightly tilt the board at both ends to form two "Alice", the following two sets of steerable axle system. See the figure below:

We made a few pictures, a decomposition of the whole process Ollie movement -

When coasting, the use of a common skaters feet after a front, sideways forward position. Literary skaters and riders 2B except posture. Taxiing, try to keep the center of gravity of the body in line skate, and straight ahead, not to be moved by a variety of beautiful girl.

Do an Ollie ago, riders will have a ready to move - after the rear end of the rocker is moved, the front foot in front between two axes partial position, slightly squat body, ready to jump.
The significance of this action is that the slide compared to a rear-wheel axis lever back foot after the shift, as long as a lever to create a power arm; after forefoot shift retain as long as possible friction sliding friction imminent distance; squat body, Charge jump.

When Ollie beginning, back foot push down firmly forefoot jump. Because after Alice has been subjected to a downward force into a slide lever, rear-wheel axis, after Alice became the power arm downward movement of the front end as a resistance arm fast lift.

After the rear under the pressure continues Alice, Alice after touchdown. Lift the rear wheel.

Alice after touchdown, the lever shaft into a point after Alice tip contact with the ground, driven by inertia, continue to raise the front end of the rear wheel also will be off the ground. This moment, after Alice skateboard only the tip is in contact with the ground. Alice after touchdown, the rear foot jump, bounce after Alice will follow.

Forefoot plate along the front face upward, and the manufacture of sliding friction skateboard deck, skateboard will continue to follow the front foot forward and upward movement, after Alice from the ground (a process called 'vacated zone plate'). At this skateboard with the human body has been completely vacated.

Complete with front foot forward and upward movement of the plate, raise the stop, slightly forward. By forefoot restrictions, skateboards longer overall elevation, but became the lever again, before the point of contact with the slide axis foot, after Alice becomes resistance arm, lifted by means of inertia. Continue to raise the rear foot to reach the same height as the front foot.

After Alice continue to raise until it touches the back foot, raise the stop. Since the front and rear legs in the air at the same height, the slide leveled in the air. In this case the slide reaches the maximum jump height.

Influence of gravity, skateboards began to decline. With falling gently slide your feet under pressure to ensure that will not flip slide or tilt.

Four wheels, a basic Ollie operation is completed.

To adjust the focus and pay attention to landing bend knees to absorb the impact force generated when the ground to prevent fall or bruise. Tony Hawk Pro Skater leg pants more often than he has broken, all patch ......

Landing on your feet as much as possible off the board and the mounting position of the front and rear axles, if falls on the middle portion of the plate or the warped surface, it is possible improper force crushed slide; or the body to lose focus fell skateboard at high speed fly passerby ankle, it will Knocked fracture, and then taken to hospital, huge medical expenses and compensation for the families of wounded or even endure taunts police uncle ...... what a familiar process ah ......

Sorry again, the scientific principles herein described is simply a mess, desperate correction. I hope that the landlord can probably understand the principles of ......

Some other relevant circumstances:

The above analysis process a lot, but actually a Ollie will be completed within a few seconds. The good riders in Ollie process will control the delicate position of the feet, to keep pace with the skateboard as possible. In such a fast process, it looks like feet and skateboard stuck the same.

Front skateboard deck covered with a layer of rough sandpaper to increase friction and prevent your feet from slipping. When the band plate can also provide plenty of friction.

You may have noticed that, after take-off, front foot and not with the sole plate surface friction, but before the outside foot skateboard shoe upper front and slide sandpaper friction. Is the largest manufacturer of friction, riders will deliberately twisted inside the front foot to the outside of the shoe as a large area with sandpaper manufacture of friction. This "my skateboard shoes," the strong degree presented a great challenge, so a good skateboarding shoes in addition to handsome enough, strong degree can imagine.

Ollie sometimes a good measure air capacity, that is, after the slide has been leveled to maintain the maximum height of the time. After this is actually a great extent depend on the take-off is applied to the back foot skateboard Alice force much. In addition, skilled skaters will skate in the air pulled by hand, so that the slide while the whereabouts of the body as much as possible ahead of time rather than off the foot of the falls.

...... It is generally always used in the riders back leg calf more thicker, stronger explosive thing. However, Tony Hawk Pro Skater often footed, feet can change at any time before and after the position is more complicated to adapt to change venues and swivel skills.

Start from Ollie, slide into the vacated era. You can see most of today's Aerials, are based on more sophisticated Ollie control the whole process, position, direction and intensity of the feet of force to control the slide whipped up and down, dazzled.

Recommendations timid novice to wear protective gear when contacting Ollie, to prevent falls. But skateboarding has always been very adventurous extreme sports, skateboarding want to play, always accept the courage and dangerous tests.

Finally comes a Ollie instructional video to learn that look vexing process in slow motion from above.

Video Click here: http://v.youku.com/v_show/id_XMzU1Mzg5MjIw.html

(posted several videos are then easy to use, the next day strangely disappeared, simply go directly to the point and see Youku)

Update: Thanks @Cesrate and several other friends on the physical aspects of the amendments described. There are other questions please Paizhuan ...... those years in skateboarding, never seriously thought about these laws of physics behind the technique, it is also now explain a sweat ...... always confused about skateboarding problems always welcome discussion, in addition to playing Nutshell, we can also stepping on skateboards go out for a ride. Thank you for your support!

Update again : I do not know how since the last modification of video missing. I found a better look at the video posted here, you can see not only the basic explanation Ollie, there are some examples of the application Niubi (across the barrier, flew high table) and, more importantly, there are Chinese subtitles ......

The explanations are Aldrin Garcia, it is above the first piece of skateboard brands sponsor professional riders. He was the first burst of a world-class skateboard soar race won the championship, setting a staggering 45 inches (114.3 centimeters) world record. By him to demonstrate Ollie appropriate.