about surfing

Surf Articles

Find out more about the origins and history of surfing
Where did it all start? How did today's sport of surfing develop from the Pacific Islands and ancient Hawaii? Find out; we have three articles that look at just that. They talk about where things started, the Hawaiian influence, and early Californian surf culture.
Find out more about the history of surfing >>
Surfing in ancient Hawaii >>Early Californian surf culture >>

 

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Find out more about performance boardshorts
We've managed to get hold of this great guide to performance boardshorts. The guide looks at the latest offerings from the top surf brands including Hurley, Quiksilver, Volcom and Billabong. It's for the new 2010 ranges, but look out for an new version next year.
Find out more about performance boardshorts >>


 

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Find out more about the dangers of surfing
Ever thought about just how dangerous surfing can be? We have put together ten of the worst dangers that you face every time you go for a surf. Rips, sharks, and drowning all make an appearance in our (not very) scary little article.
Find out more about surfing dangers >>
 

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Find out more about surfing etiquette
Want to know how to behave while in the surf? This essential guide is a must for beginners and great for refreshing a more experienced surfer's knowledge. The article covers the right of way, respecting others, and being an all round decent surfer!
Find out more about how to behave in the surf >>

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Mountain Bike

A mountain bike or mountain bicycle (abbreviated MTB or ATB (all-terrain bicycle)) is a bicycle created for off-road cycling. This activity includes traversing of rocks and washouts, and steep declines, on dirt trails, logging roads, and other unpaved environments — activities usually called mountain biking. These bicycles need to be able to withstand the stresses of off-road use with obstacles such as logs and rocks. Most mountain bikes use wheels with rims which are 559mm in ISO sizing, colloquially referred to as "26-inch", although the term is inaccurate as it covers too many rim and tire sizes to be meaningful. Wheels used on mountain bikes usually use wide, knobby tires for good traction on uneven terrain and shock absorption. Since 2000, front wheel suspension has become the norm and full front and rear suspension has become increasingly common. Some mountain bikes are also fitted with bar ends on the handlebars to give extra leverage for hill-climbing.

Since the development of the sport in the 1970s many new subtypes of mountain biking have developed, such as cross-country (XC) biking, all-day endurance biking, Freeride-biking, downhill mountain biking, and a variety of track and slalom competitions. Each of these place different demands on the bike requiring different designs for optimal performance. MTB development has included an increase in gearing, up to 30 speeds, to facilitate both climbing and rapid descents. Other developments include disc instead of cantilever or V-brakes.

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RC (Remote Control)

Radio-controlled (or R/C) cars are self-powered model cars or trucks that can be controlled from a distance using a specialized transmitter. The term "R/C" has been used to mean both "remote controlled" and "radio controlled", where "remote controlled" includes vehicles that are connected to their controller by a wire, but common use of "R/C" today usually refers to vehicles controlled by a radio-frequency link. This article focuses on radio-controlled vehicles only.

Cars are powered by various sources. Electric cars are powered by small but powerful electric motors and rechargeable nickel-cadmium, nickel metal hydride, or lithium polymer cells. There are also brushed or brushless electric motors. Most fuel-powered models use glow plug engines, small internal combustion engines fueled by a special mixture of nitromethane, methanol, and oil (in most cases a blend of castor oil and synthetic oil). These are referred to as "nitro" cars. Recently, exceptionally large models have been introduced that are powered by small gasoline engines, similar to string trimmer motors, which use a mix of oil and gasoline. Electric cars are generally considered easier for the novice to work with compared to fuel-driven models, but can be equally as complex at the higher budget and skill levels.

In both of these categories, both on-road and off-road vehicles are available. Off-road models, which are built with fully-functional off-road suspensions, can be used on various types of terrain. In comparison, on-road cars, which generally have a limited or non-existent suspension, are strictly limited to smooth, paved surfaces.

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Quick Details

model: CZ0834

Specifications

powerbock

Detailed Product Description

Our product is design as a new and fashion sports entertainment.
A lot of adults are favor to it, they thirst for such product for higher, stronger, taller and dynamic.
Which is the perfert match to the needed of the modern life.
UPWING JUMP STILTS:
we make it according to the principle of traditional stilt,
adding modern idea into it, turning that to elastic jump stilts,
let you feel both exercise and joy adequately. It is very easy to learn which need not professional training.
It is not distinguished by age or feet size, but peoples weight.

Outer Packing Size: 91x29x40CM                

Product Size: 340x185x890 MM

Net Weight: 7.5 KG

Gross Weight: 10 KG

Color: Black

Packing: one pair/carton

Models Available:(according to your weight)

M60-For user who weighs (60-70kg, 131~152lbs)

M70-For user who weighs (70-79kg,153-174lbs)

M80-For user who weighs (80-89kg,175~196lbs)

M90-For user who weighs (90-99kg,197~218lbs)

M100-For user who weighs (100-109kg,219~242lbs)

M110-For user who weighs (110-120kg,243~265lbs)

Jump 6 feet in the air and leap in 9 feet strides!

Help you to burn calories and become taller in a healthy way.

An ideal equipment:
kids can have healthy body and nimble thinking when they are in the necessary growth stage;
adult can restart feeling his good childhood and taste the most exciting experience.

A healthy vehicle: you can escape from the smell of gasoline.

A distinctive performance equipment: let yourself, family,
team, club, acrobatic troupe and amusement park attract more and more admiring eyes.

To make you become a master-hand of basketball soon.

A good training tool: for army, sportsman and school,

as a new invention, it can be used as a training tool to make peoples bones and skeleton stretched enough,
to make their muscle stronger, to make them create better achievement and more miracles.

as a new fashionable sport, jumping stilts not only strengthen your body, increase your rapid of moving,
running and jumping, but also improve your self-confidence; for another,
using jumping stilts is one of the the best methods to losr ones weight.
What is more, jumping stilts can be used as a transportation, fasility for performance and training,
gift, and toys for kids. Now that we can be "super-human," extreme sports are going to the next level.
You may hear of POWERIZER, FLYJUMPER, JOLLYJUMPER, AIRRUNNER, and JUMPERS,
which are produced by our factory.
Our brand of jumper stilts has won great popularity for the good quality, delicate workmanship,
fashionable design and competitive price in the global market.

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BMX bicycle

A BMX bike or BMX is the name of a popular bicycle used for both casual use and sport, and designed mainly for dirt and motocross cycling. "BMX" is the usual abbreviation for bicycle motocross.

Contents  [hide] 1 Construction 2 History 3 Sport and leisure use 4 Models 5 References

[edit]Construction

Though originally connoting a bicycle intended for BMX Racing, the term "BMX bike" is now used to encompass race bikes, as well as those used for the dirt, vert, park, street and flatland disciplines of BMX.

BMX frames are made of various types of steel, and (largely in the racing category) aluminum. Cheaper, low end bikes are usually made of steel. Mid range bikes are mostly chromoly or hi tensile steel, which are about the same in weight and strength. High-performance BMX bikes use 4130 chromoly, or generation 3 chromoly.

The introduction and widespread popularity of the cassette hub has ushered in the use of smaller gearing on BMX bikes. Instead of the old 44/16 gearing found on almost all older BMX bikes, new bikes use gearing such as 36/13, 33/12, 30/11, 28/10, 25/9, and even 23/8, all of which have similar gear ratios of almost 2.8:1. Advantages of smaller gearing hubs include lighter weight, and more clearance when grinding. The freewheel hub is all but extinct due to several factors. The smallest freewheels that can be made is with 13 teeth, which is larger than most riders prefer. Also, they are less consistent than cassette hubs, and skip or jam up far more frequently.

On most freestyle, dirt jumping & street BMX bikes, the wheels have 36 spokes, with more aggressive riders using 48 spoke wheels, due to the extra strength afforded them. Race bike wheels are also usually 36 spokes, but wheels for the smallest racers (sometimes as young as three years old) can be built with 18 or 28 spokes.

BMX Racing bike wheels vary in size, from 18" to 26" (with 20" being the most popular).

Dirt jumping and freestyle bike wheel sizes include 16" and 18" for younger, smaller riders, 20" for most other riders, and a few companies including Haro and Sunday offer 24" freestyle bikes for taller or older riders who feel cramped on a standard 20" BMX bike.

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SKATEBOARD

A skateboard is typically a specially designed plywood board combined with a polyurethane coating used for making smoother slides and stronger durability, used primarily for the activity of skateboarding. It appears the first skateboards to reach public notice came out of the surfing craze of the early 1960s, just wooden boards with roller-skate wheels attached. The surfing group Jan and Dean even had a minor hit called "Sidewalk Surfing" in 1964. In time, it became a pastime for surfers when the waves were lax. By the mid 1980s skateboards were mass produced and sold throughout the United States.

A skateboard is propelled by pushing with one foot while the other remains on the board, or by pumping one's legs in structures such as a pool or half pipe. A skateboard can also be used by simply standing on the deck while on a downward slope and allowing gravity to propel the board and rider. If you ride with your right foot forward, you ride "goofy"; if you ride with your left foot forward, you ride "regular." If you are normally regular and are riding goofy, you are riding "switch," and vice versa.

Recently, electric skateboards have also appeared. These no longer require the propelling of the skateboard by means of the feet; rather an electric motor propels the board, fed by an electric battery.

There is no governing body that declares any regulations on what constitutes a skateboard or the parts from which it is assembled. Historically, the skateboard has conformed both to contemporary trends and to the ever evolving array of stunts performed by riders/users, who require a certain functionality from the board. Of course, the board shape depends largely upon its desired function. Longboards are a type of skateboard with a longer wheelbase and larger, softer wheels.

Contents  [hide] 1 Parts 1.1 Deck 1.2 Trucks 1.3 Wheels 1.4 Grip tape 1.5 Bearings 1.6 Hardware 2 Optional components 2.1 Risers/wedges 2.2 Rails/ribs 2.3 Slip tape 2.4 Lapper 2.5 Nose guard 2.6 Tail guard 2.7 Tail Devil 2.8 Copers 3 References 4 See also

[edit]Parts

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