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e bicycle gearing

2018-01-30 Вести No comments

Bicycle gearing is the aspect of a bicycle drivetrain that determines the relation between the cadence, the rate at which the rider pedals, and the rate at which the drive wheel turns. On some bicycles, there is only one gear and the gear ratio is fixed. Many contemporary bicycles have multiple gears and thus multiple gear ratios. A shifting mechanism allows selection of the appropriate gear ratio for efficiency or comfort under the prevailing circumstances: for example, it may be comfortable to use a high gear when cycling downhill, a medium gear when cycling on a flat road, and a low gear when cycling uphill. Different gear ratios and gear ranges are…

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e mountain bike pedal

2018-01-30 Вести No comments

The bicycle pedal is the part of a bicycle that the rider pushes with their foot to propel the bicycle. It provides the connection between the cyclist's foot or shoe and the crank allowing the leg to turn the bottom bracket spindle and propel the bicycle's wheels. Pedals usually consist of a spindle that threads into the end of the crank and a body, on which the foot rests or is attached, that is free to rotate on bearings with respect to the spindle. Pedals were initially attached to cranks connecting directly to the driven (usually front) wheel. The safety bicycle, as it is known today, came into being when the pedals were attached to a crank…

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electric bicycle chain

2018-01-19 Вести No comments

A bicycle chain is a roller chain that transfers power from the pedals to the drive-wheel of a bicycle, thus propelling it. Most bicycle chains are made from plain carbon or alloy steel, but some are nickel-plated to prevent rust, or simply for aesthetics. In order to reduce weight, chains have been manufactured with hollow pins and with cut-outs in the links.Chains have also been made of stainless steel for corrosion resistance and titanium for weight reduction, but they are expensive.A recent trend is chains of various colors, and at least one manufacturer offers a chain model specifically for electric bicycles.

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Bicycle saddle

2018-01-19 Вести No comments

A bicycle saddle, often called a seat, is one of three contact points on an upright bicycle, the others being the pedals and the handlebars. (A bicycle seat in the specific sense also supports the back.) The bicycle saddle has been known as such since the bicycle evolved from the draisine, a forerunner of the bicycle. It performs a similar role as a horse's saddle, not bearing all the weight of the rider as the other contact points also take some of the load. A bicycle saddle is commonly attached to the seatpost and the height of the saddle can usually be adjusted by the seatpost telescoping in and out of the seat tube.

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Shuangye developed new model G4-Z

2018-01-10 Вести No comments

Shuangye developed new model G4-Z Recently Shuangye electric bike factory have developed a new model-folding electric mountain bike,equipped with foldable aluminum alloy frame,36V 250W brushless motor,and 36V 9Ah lithium-ion battery hidden in frame,the max speed ups to 25 km/h(Europe standard),max distance ups to 40-60 km(determined by the pavement) every single charge. Whether you want an pedal assist bike for commuting,exploring,exercising or just have an entertainment,our G4-Z folding electric mountain bike will meet all your needs and allow you have more fun. We us original Shimano 9 speed gears to make sure your changing the speed is smoothly and quickly. The aluminum alloy frame…

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Shuangye launch new products electric road bike

2018-01-05 Вести No comments

Shuangye launch new products electric road bike If you're looking forward an electric road bike that won't break the bank, the Shuangye new model might just be the perfect option for you. The high-quality 6061 aluminum alloy frame and performance-oriented components will give you the best riding experience. We make the lithium battery shape of the kettle to look more beautiful and fashion,not just a traditional battery.The charging port at the bottom of the battery，easy to be charge and discharge. The trusted brand Shimano gears makes changing the speed more smoothly and easy,allow you have a different experience of riding. For more information about our new…

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what is a fatbike

2017-11-28 Вести No comments

what is a fatbike A fatbike (also called fat bike or fat-tire bike) is an off-road bicycle with oversized tires, typically 3.8 in (97 mm) or larger and rims 2.6 in (66 mm) or wider, designed for low ground pressure to allow riding on soft unstable terrain, such as snow, sand, bogs and mud.Fatbikes are built around frames with wide forks and stays to accommodate the wide rims required to fit these tires. The wide tires can be used with inflation pressures as low as 340 hPa (5 psi) to allow for a smooth ride over rough obstacles. A rating…

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electric bike is appraised as Christmas gift in Sweden

2017-11-27 Вести No comments

electric bike is appraised as Christmas gift in Sweden With the advent of Christmas,Swedish people step up procurement of Christmas gifts.Swedish Trade Federation HUI research institute announced in November 21 that electric bike become the most popular gift this year in Sweden. The institute declared that electric bike turned from unique products into attractive mass consumer goods,has the potential to change social infrastructure and human behavior. “Electric bicycles will have a bigger market,It relieves the pressure on private cars and public transport,and has the potential to accelerate the development of smart city”,said the CEO of HUI,Jonas Arnibal. Arnibal said that “Corresponds to…

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