bicicleta

traducción BICICLETA en aleman, diccionario Espanol - Aleman, definición, consulte también 'bici',bicoca',biblioteca',bioética'. Englische Übersetzung von "bicicleta" | Der offizielle Collins Portugiesisch- Englisch Wörterbuch online. Über Englische Übersetzungen von. Lernen Sie die Übersetzung für 'bicicleta' in LEOs Spanisch ⇔ Deutsch Wörterbuch. Mit Flexionstabellen der verschiedenen Fälle und Zeiten ✓ Aussprache und. Diese Bewertungen wurden maschinell aus dem Englischen übersetzt. Beste Spielothek in Oberwarming finden kommen jetzt Beste Spielothek in Oberleutasch finden von authentischen Übersetzungsbeispielen aus externen Quellen, die zeigen, wie ein Begriff im Zusammenhang übersetzt wird. We are sorry for the inconvenience. Der Service war etwas langsam, aber dann war es voll. Brasilianisches Portugiesisch Europäisches Portugiesisch capacete de bicicleta. Flüge Ferienwohnungen Restaurants Aktivitäten. Darüber hinaus haben wir begonnen, diese Technologie auf weitere Sprachen anzuwenden, um entsprechende Datenbanken mit Beispielsätzen aufzubauen. In Ihrem Browser ist Javascript deaktiviert. Die Beispielsätze sollten folglich paypal probleme beim einloggen Bedacht geprüft und verwendet werden. Juni Mahjong download free full version Service. Bitte beachten Sie, dass die Vokabeln in der Vokabelliste nur in diesem Browser zur Verfügung stehen. Vielen Dank für die Einreichung einer Bearbeitung. Otherwise your message will be regarded as spam. Original Design of the place - Stücke wiederhergestellt von alt und verschrottet Fahrräder zusammen in ein besonderes Bar. Casino monte carlo eschweiler Sie uns gern einen neuen Eintrag.

Bicicleta Video

Am vazut o bicicleta - Ape Rider Alle Hotels in der Umgebung anzeigen Alle 2. Die Gummilaschen werden auf [ Kein gutes Beispiel für die Übersetzung oben. Wenn Sie fortfahren, stimmen Sie der Verwendung unserer Cookies zu. Die gesammelten Vokabeln werden unter "Vokabelliste" angezeigt. Wenn Sie fortfahren, stimmen Sie der Verwendung unserer Cookies zu. Die gesammelten Vokabeln werden unter "Vokabelliste" angezeigt. D a s e rst e Fahrrad m it dem Zahn kr anz zum [ Senden Sie uns gern einen neuen Eintrag. Sa - So Die Vokabel wurde gespeichert, jetzt sortieren? These bicycles were difficult to ride due to their high seat and poor weight distribution. Related searches big ass teen mother and son panties motorcycle cicciolina small free slot game star masturbation dad and daughter yoga exibicionismo voyeur german milf hrvatska croatian dildos bike bicicle game exhibicionista bicycle exibicionista skinny teen cicle brazzers mom online casino denmark wrestling kim kardashian big boobs moto real hidden folmava casino big ass anal big tits teen More This lean is induced by a method Beste Spielothek in Hintermehring finden as countersteeringwhich can be performed by the rider turning the handlebars directly with the hands [35] or indirectly by leaning the bicycle. Retrieved 6 March Saddles also vary with rider preference, from the cushioned ones favored by short-distance riders to narrower saddles which allow more room for leg swings. Bicycle helmets can reduce injury in the event of a collision or accident, and a suitable helmet is legally required of riders in many jurisdictions. The bicycle, in that sense, can be an important poverty-eradication tool in poor nations. I ride my bike. These initiatives complement public transport systems and offer an alternative to motorized Beste Spielothek in Samern finden to help reduce congestion and pollution. Canada Science and Technology Museum.

We wanted to do everything barefoot. We strolled happily to several places And watching Shaki contented, happy, reuniting with her friends, with her people, I think that the video registered a very, very special energy.

A lyric video for the song was uploaded on Vives's official Vevo account on 10 June It features images of various places in Colombia throughout, with vintage effects and postcard stamps of different places around the world.

The snippet featured her shaking her hips and Vives putting two bicycles on the back of a truck. Carlos Vives then appears offering her a bike to continue their Caribbean coast trip.

The clip also features fans of the singers and various scenery intertwined throughout. Diana Marti, writing for E!

Online noted how the clip would make viewers "fall in love" with Colombia and the beauty of its towns and beaches.

She finished her review by advising readers to view the clip in order to catch a glimpse of "all the beauty and fun that is Colombia".

Online described it as an "unforgettable" trip through Colombia, its landscapes and culture. He further noted how the duo used various football references to "agglutinate" its viewers.

It was announced that Vives and Shakira would perform the song together at the American Music Awards of and the 17th Annual Latin Grammy Awards , however Shakira canceled both performances due to personal matters.

Beto Perez, a Zumba dancer invented a workout with a dance choreography for the song, gathering more than 4, people in Argentina; his videos of the event were uploaded on Shakira's official YouTube channel.

Colombian singer Maluma posted a snippet of a remix version of "La Bicicleta" featuring his vocals on his Instagram account on 21 July , which included him name-listing the singers.

Credits and personnel adapted from El Dorado booklet. From Wikipedia, the free encyclopedia. El Tiempo in Spanish.

Retrieved 27 June Retrieved 5 June Retrieved 19 June Carlos Vives 'es el rey del vallenato ' " in Spanish. Retrieved 9 June Retrieved 12 May Variety Latino in Spanish.

Retrieved 8 July Retrieved 28 July Retrieved 12 July Shakira shines on 'El Dorado ' ". Retrieved 8 August Retrieved 19 July Retrieved 13 June Retrieved 25 July Consumption Up, Market Divided".

Retrieved 24 July Retrieved 9 July Retrieved 6 March Retrieved 12 June El Colombiano in Spanish. El Heraldo in Spanish. Training wheels are sometimes used when learning to ride.

Toe-clips and toestraps and clipless pedals help keep the foot locked in the proper pedal position and enable cyclists to pull and push the pedals.

Technical accessories include cyclocomputers for measuring speed, distance, heart rate, GPS data etc. Other accessories include lights , reflectors, mirrors, racks, trailers, bags, water bottles and cages , and bell.

It is more common to see bicycles with bottle generators, dynamos, lights, fenders, racks and bells in Europe.

Bicyclists also have specialized form fitting and high visibility clothing. Bicycle helmets can reduce injury in the event of a collision or accident, and a suitable helmet is legally required of riders in many jurisdictions.

Helmets may be classified as an accessory [52] or as an item of clothing. Bike trainers are used to enable cyclists to cycle while the bike remains stationary.

They are frequently used to warm up before races or indoors when riding conditions are unfavorable. Bicycles can also be fitted with a hitch to tow a trailer for carrying cargo, a child, or both.

A number of formal and industry standards exist for bicycle components to help make spare parts exchangeable and to maintain a minimum product safety.

The International Organization for Standardization ISO has a special technical committee for cycles, TC, that has the scope of "Standardization in the field of cycles, their components and accessories with particular reference to terminology, testing methods and requirements for performance and safety, and interchangeability".

European cycle standards tend to describe minimum safety requirements, while ISO standards have historically harmonized parts geometry.

Maintenance of adequate tire inflation is the most frequent and troublesome concern for cyclists and many means and methods are employed to preserve pneumatic integrity.

Thicker tires, thicker tubes, tire liners of a number of rather impenetrable devices installed between the tire and tube , liquid sealing compounds squeezed into the tube, and automotive-style patch kits are all used to reliably contain the typical tire pressures of 40 to 60 pounds per square inch that are required for bicycle operation.

Thin, light bicycle tires are particularly vulnerable to penetration and subsequent deflation caused by goat's heads and other burs , colloquially known as stickers.

Inflation of bicycle tires to pressures higher than typical for automotive use requires special pumps.

The complexity of bicycle tire maintenance and repair may cause many to not consider the bicycle for transport or leisure.

Some bicycle parts, particularly hub-based gearing systems, require considerable torque for dis-assembly and may thus need professional services.

Self-service and assisted-service maintenance and repair may be available. There are specialized bicycle tools for use both in the shop and on the road.

Many cyclists carry tool kits. These may include a tire patch kit which, in turn, may contain any combination of a hand pump or CO 2 Pump , tire levers , spare tubes , self-adhesive patches, or tube-patching material, an adhesive, a piece of sandpaper or a metal grater for roughing the tube surface to be patched , Special, thin wrenches are often required for maintaining various screw fastened parts, specifically, the frequently lubricated ball-bearing "cones".

There are also cycling specific multi-tools that combine many of these implements into a single compact device.

More specialized bicycle components may require more complex tools, including proprietary tools specific for a given manufacturer. The bicycle has had a considerable effect on human society, in both the cultural and industrial realms.

Around the turn of the 20th century, bicycles reduced crowding in inner-city tenements by allowing workers to commute from more spacious dwellings in the suburbs.

They also reduced dependence on horses. Bicycles allowed people to travel for leisure into the country, since bicycles were three times as energy efficient as walking and three to four times as fast.

In built up cities around the world, urban planning uses cycling infrastructure like bikeways to reduce traffic congestion and air pollution.

It was followed by yellow bicycles in La Rochelle and green bicycles in Cambridge. These initiatives complement public transport systems and offer an alternative to motorized traffic to help reduce congestion and pollution.

In Copenhagen , a cyclists' organization runs a Cycling Embassy that promotes biking for commuting and sightseeing. The United Kingdom has a tax break scheme IR that allows employees to buy a new bicycle tax free to use for commuting.

In the Netherlands all train stations offer free bicycle parking, or a more secure parking place for a small fee, with the larger stations also offering bicycle repair shops.

Cycling is so popular that the parking capacity may be exceeded, while in some places such as Delft the capacity is usually exceeded.

Buses in many cities have bicycle carriers mounted on the front. There are towns in some countries where bicycle culture has been an integral part of the landscape for generations, even without much official support.

In cities where bicycles are not integrated into the public transportation system, commuters often use bicycles as elements of a mixed-mode commute , where the bike is used to travel to and from train stations or other forms of rapid transit.

Some students who commute several miles drive a car from home to a campus parking lot, then ride a bicycle to class. Folding bicycles are useful in these scenarios, as they are less cumbersome when carried aboard.

Los Angeles removed a small amount of seating on some trains to make more room for bicycles and wheel chairs.

Some US companies, notably in the tech sector , are developing both innovative cycle designs and cycle-friendliness in the workplace.

Parking in the office was also integral to HQ planning. Bicycles offer an important mode of transport in many developing countries.

Until recently, bicycles have been a staple of everyday life throughout Asian countries. They are the most frequently used method of transport for commuting to work, school, shopping, and life in general.

In Europe, bicycles are commonly used. Bicycles are also celebrated in the visual arts. An example of this is the Bicycle Film Festival , a film festival hosted all around the world.

For example, road investments in India were a staggering times more effective than almost all other investments and subsidies in rural economy in the decade of the s.

What a road does at a macro level to increase transport, the bicycle supports at the micro level. The bicycle, in that sense, can be an important poverty-eradication tool in poor nations.

The safety bicycle gave women unprecedented mobility, contributing to their emancipation in Western nations. As bicycles became safer and cheaper, more women had access to the personal freedom that bicycles embodied, and so the bicycle came to symbolize the New Woman of the late 19th century, especially in Britain and the United States.

The bicycle was recognized by 19th-century feminists and suffragists as a "freedom machine" for women. Anthony said in a New York World interview on February 2, I rejoice every time I see a woman ride by on a wheel.

It gives her a feeling of self-reliance and independence the moment she takes her seat; and away she goes, the picture of untrammelled womanhood.

How I Learned to Ride the Bicycle, with Some Reflections by the Way , a page illustrated memoir praising "Gladys", her bicycle, for its "gladdening effect" on her health and political optimism.

Bicycle manufacturing proved to be a training ground for other industries and led to the development of advanced metalworking techniques, both for the frames themselves and for special components such as ball bearings , washers , and sprockets.

These techniques later enabled skilled metalworkers and mechanics to develop the components used in early automobiles and aircraft.

Wilbur and Orville Wright , a pair of businessmen, ran the Wright Cycle Company which designed, manufactured and sold their bicycles during the bike boom of the s.

Early bicycles were an example of conspicuous consumption , being adopted by the fashionable elites. Bicycles helped create, or enhance, new kinds of businesses, such as bicycle messengers, [92] traveling seamstresses, [93] riding academies, [94] and racing rinks.

There were a variety of new inventions, such as spoke tighteners, [96] and specialized lights, [91] [96] socks and shoes, [97] and even cameras, such as the Eastman Company 's Poco.

They also presaged a move away from public transit [] that would explode with the introduction of the automobile. Starley's company became the Rover Cycle Company Ltd.

In recent years, those bicycle makers have greatly changed their methods of production. Now, almost none of them produce their own frames.

Many newer or smaller companies only design and market their products; the actual production is done by Asian companies. Despite this shift in production, as nations such as China and India become more wealthy, their own use of bicycles has declined due to the increasing affordability of cars and motorcycles.

In line with the European financial crisis, in Italy in the number of bicycle sales 1. One of the profound economic implications of bicycle use is that it liberates the user from oil consumption.

Ballantine, The bicycle is an inexpensive, fast, healthy and environmentally friendly mode of transport. Ivan Illich stated that bicycle use extended the usable physical environment for people, while alternatives such as cars and motorways degraded and confined people's environment and mobility.

Children, students, professionals, laborers, civil servants and seniors are pedaling around their communities.

They all experience the freedom and the natural opportunity for exercise that the bicycle easily provides. Bicycle also has lowest carbon intensity of travel.

The proper Islamic bicycle for the Iranian women is a topic of heated discussion in both Sunni and Shia Islam. Early in its development, as with automobiles , there were restrictions on the operation of bicycles.

Along with advertising, and to gain free publicity, Albert A. Pope litigated on behalf of cyclists. The Vienna Convention on Road Traffic of the United Nations considers a bicycle to be a vehicle, and a person controlling a bicycle whether actually riding or not is considered an operator.

The traffic codes of many countries reflect these definitions and demand that a bicycle satisfy certain legal requirements before it can be used on public roads.

In many jurisdictions , it is an offense to use a bicycle that is not in a roadworthy condition. In most jurisdictions, bicycles must have functioning front and rear lights when ridden after dark.

As some generator or dynamo -driven lamps only operate while moving, rear reflectors are frequently also mandatory. Since a moving bicycle makes little noise, some countries insist that bicycles have a warning bell for use when approaching pedestrians, equestrians, and other cyclists, though sometimes a car horn can be used when a 12 volt battery is available.

Countries which require adult cyclists to wear helmets include Spain, New Zealand and Australia. Mandatory helmet wearing is one of the most controversial topics in the cycling world, with proponents arguing that it reduces head injuries and thus is an acceptable requirement, while opponents argue that by making cycling seem more dangerous and cumbersome, it reduces cyclist numbers on the streets, creating an overall negative health effect fewer people cycling for their own health, and the remaining cyclists being more exposed through a reversed safety in numbers effect.

Bicycles are popular targets for theft, due to their value and ease of resale. The worlds longest bicycle was created by Santos and University of South Australia.

It measures at From Wikipedia, the free encyclopedia. For other uses, see Bicycle disambiguation. For other uses, see Bike disambiguation.

History of the bicycle. List of bicycle types. Bicycle and motorcycle dynamics. Bicycle wheel and Bicycle tire.

List of bicycle manufacturing companies. Retrieved 2 January Retrieved 31 October Australian Broadcasting Corporation News Online.

The Automobile and American Life. Oxford English Dictionary 3rd ed. Consultado el 14 de agosto de Yale University Press , pp. Consultado el 21 de abril de Consultado el 29 de septiembre de Running Press, London, Philadelphia, — www.

Deaths of cyclists in London: In-depth Study of Motorcycle Accidents. Consultado el 2 de octubre de Consultado el 3 de octubre de Vistas Leer Editar Ver historial.

En otros proyectos Wikimedia Commons Wikiquote.

Bicicleta -

Die Vokabel wurde gespeichert, jetzt sortieren? Die korrekte sprachliche Einordnung und Bewertung der Beispielsätze ist für einen Sprachanfänger oder Schüler der Grund- und Mittelstufen nicht immer einfach. Einzigartiges Design, einzigartige Aussicht vom Balkon aus, professionell Sachen Lächeln immer betont, dass re höflich, Wifi funktioniert gut, the interior Design voller Fahrräder Stücke und Geschichten ist einzigartig und verleiht dem Ort eine gemütliche vs.. Zu diesen alltäglichen Aktivitäten [ Klein und speziell der Service war gut und der Wein war gut, die Preise zivil. Dabei geht es vor allem um professionell übersetzte Webseiten von Unternehmen und wissenschaftlichen Einrichtungen. Vielen Dank für Ihre Hilfe!

Todas estas operaciones se pueden realizar con herramientas sencillas y comunes. Otras operaciones requieren herramientas especializadas.

Para montar y desmontar los eslabones de una cadena se usa el tronchacadenas o cortacadenas. De Wikipedia, la enciclopedia libre. Consultado el 6 de mayo de Consultado el 14 de agosto de Yale University Press , pp.

Consultado el 21 de abril de Consultado el 29 de septiembre de Running Press, London, Philadelphia, — www. Deaths of cyclists in London: The head tube contains the headset , the set of bearings that allows the fork to turn smoothly for steering and balance.

The top tube connects the head tube to the seat tube at the top, and the down tube connects the head tube to the bottom bracket.

The rear triangle consists of the seat tube and paired chain stays and seat stays. The chain stays run parallel to the chain , connecting the bottom bracket to the rear dropout , where the axle for the rear wheel is held.

The seat stays connect the top of the seat tube at or near the same point as the top tube to the rear fork ends. Historically, women's bicycle frames had a top tube that connected in the middle of the seat tube instead of the top, resulting in a lower standover height at the expense of compromised structural integrity, since this places a strong bending load in the seat tube, and bicycle frame members are typically weak in bending.

This design, referred to as a step-through frame or as an open frame , allows the rider to mount and dismount in a dignified way while wearing a skirt or dress.

While some women's bicycles continue to use this frame style, there is also a variation, the mixte , which splits the top tube laterally into two thinner top tubes that bypass the seat tube on each side and connect to the rear fork ends.

The ease of stepping through is also appreciated by those with limited flexibility or other joint problems. Because of its persistent image as a "women's" bicycle, step-through frames are not common for larger frames.

Step-throughs were popular partly for practical reasons and partly for social mores of the day. For most of the history of bicycles' popularity women have worn long skirts, and the lower frame accommodated these better than the top-tube.

Furthermore, it was considered "unladylike" for women to open their legs to mount and dismount - in more conservative times women who rode bicycles at all were vilified as immoral or immodest.

These practices were akin to the older practice of riding horse sidesaddle. Another style is the recumbent bicycle. These are inherently more aerodynamic than upright versions, as the rider may lean back onto a support and operate pedals that are on about the same level as the seat.

The world's fastest bicycle is a recumbent bicycle but this type was banned from competition in by the Union Cycliste Internationale.

Historically, materials used in bicycles have followed a similar pattern as in aircraft, the goal being high strength and low weight.

Since the late s alloy steels have been used for frame and fork tubes in higher quality machines. By the s aluminum welding techniques had improved to the point that aluminum tube could safely be used in place of steel.

Since then aluminum alloy frames and other components have become popular due to their light weight, and most mid-range bikes are now principally aluminum alloy of some kind.

Virtually all professional racing bicycles now use carbon fibre frames, as they have the best strength to weight ratio.

A typical modern carbon fiber frame can weighs less than 1 kilogram 2. Other exotic frame materials include titanium and advanced alloys.

Bamboo , a natural composite material with high strength-to-weight ratio and stiffness [44] has been used for bicycles since The drivetrain begins with pedals which rotate the cranks , which are held in axis by the bottom bracket.

Most bicycles use a chain to transmit power to the rear wheel. A very small number of bicycles use a shaft drive to transmit power, or special belts.

Hydraulic bicycle transmissions have been built, but they are currently inefficient and complex. Since cyclists' legs are most efficient over a narrow range of pedaling speeds, or cadence , a variable gear ratio helps a cyclist to maintain an optimum pedalling speed while covering varied terrain.

Most bikes have two or three chainrings, and from 5 to 11 sprockets on the back, with the number of theoretical gears calculated by multiplying front by back.

In reality, many gears overlap or require the chain to run diagonally, so the number of usable gears is fewer. An alternative to chaindrive is to use a synchronous belt.

These are toothed and work much the same as a chain - popular with commuters and long distance cyclists they require little maintenance.

They can't be shifted across a cassette of sprockets, and are used either as single speed or with a hub gear. Different gears and ranges of gears are appropriate for different people and styles of cycling.

Multi-speed bicycles allow gear selection to suit the circumstances: In a lower gear every turn of the pedals leads to fewer rotations of the rear wheel.

This allows the energy required to move the same distance to be distributed over more pedal turns, reducing fatigue when riding uphill, with a heavy load, or against strong winds.

A higher gear allows a cyclist to make fewer pedal turns to maintain a given speed, but with more effort per turn of the pedals.

With a chain drive transmission, a chainring attached to a crank drives the chain, which in turn rotates the rear wheel via the rear sprocket s cassette or freewheel.

There are four gearing options: The most common options are either a rear hub or multiple chain rings combined with multiple sprockets other combinations of options are possible but less common.

The handlebars connect to the stem that connects to the fork that connects to the front wheel, and the whole assembly connects to the bike and rotates about the steering axis via the headset bearings.

Three styles of handlebar are common. Upright handlebars , the norm in Europe and elsewhere until the s, curve gently back toward the rider, offering a natural grip and comfortable upright position.

Drop handlebars "drop" as they curve forward and down, offering the cyclist best braking power from a more aerodynamic "crouched" position, as well as more upright positions in which the hands grip the brake lever mounts, the forward curves, or the upper flat sections for increasingly upright postures.

Mountain bikes generally feature a 'straight handlebar' or 'riser bar' with varying degrees of sweep backwards and centimeters rise upwards, as well as wider widths which can provide better handling due to increased leverage against the wheel.

Saddles also vary with rider preference, from the cushioned ones favored by short-distance riders to narrower saddles which allow more room for leg swings.

Comfort depends on riding position. With comfort bikes and hybrids, cyclists sit high over the seat, their weight directed down onto the saddle, such that a wider and more cushioned saddle is preferable.

For racing bikes where the rider is bent over, weight is more evenly distributed between the handlebars and saddle, the hips are flexed, and a narrower and harder saddle is more efficient.

Differing saddle designs exist for male and female cyclists, accommodating the genders' differing anatomies and sit bone width measurements, although bikes typically are sold with saddles most appropriate for men.

Suspension seat posts and seat springs provide comfort by absorbing shock but can add to the overall weight of the bicycle.

A recumbent bicycle has a reclined chair-like seat that some riders find more comfortable than a saddle, especially riders who suffer from certain types of seat, back, neck, shoulder, or wrist pain.

Recumbent bicycles may have either under-seat or over-seat steering. Bicycle brakes may be rim brakes, in which friction pads are compressed against the wheel rims; hub brakes, where the mechanism is contained within the wheel hub, or disc brakes, where pads act on a rotor attached to the hub.

Most road bicycles use rim brakes, but some use disk brakes. With hand-operated brakes, force is applied to brake levers mounted on the handlebars and transmitted via Bowden cables or hydraulic lines to the friction pads, which apply pressure to the braking surface, causing friction which slows the bicycle down.

A rear hub brake may be either hand-operated or pedal-actuated, as in the back pedal coaster brakes which were popular in North America until the s.

Track bicycles do not have brakes, because all riders ride in the same direction around a track which does not necessitate sharp deceleration.

Track riders are still able to slow down because all track bicycles are fixed-gear, meaning that there is no freewheel. Without a freewheel, coasting is impossible, so when the rear wheel is moving, the cranks are moving.

To slow down, the rider applies resistance to the pedals, acting as a braking system which can be as effective as a conventional rear wheel brake, but not as effective as a front wheel brake.

Bicycle suspension refers to the system or systems used to suspend the rider and all or part of the bicycle. This serves two purposes: Bicycle suspensions are used primarily on mountain bicycles, but are also common on hybrid bicycles, as they can help deal with problematic vibration from poor surfaces.

Suspension is especially important on recumbent bicycles, since while an upright bicycle rider can stand on the pedals to achieve some of the benefits of suspension, a recumbent rider cannot.

Basic mountain bicycles and hybrids usually have front suspension only, whilst more sophisticated ones also have rear suspension.

Road bicycles tend to have no suspension. The wheel axle fits into fork ends in the frame and fork. A pair of wheels may be called a wheelset, especially in the context of ready-built "off the shelf", performance-oriented wheels.

Tires vary enormously depending on their intended purpose. Road bicycles use tires 18 to 25 millimeters wide, most often completely smooth, or slick , and inflated to high pressure in order to roll fast on smooth surfaces.

Some components, which are often optional accessories on sports bicycles, are standard features on utility bicycles to enhance their usefulness, comfort, safety and visibility.

Mudguards , or fenders , protect the cyclist and moving parts from spray when riding through wet areas and chainguards protect clothes from oil on the chain while preventing clothing from being caught between the chain and crankset teeth.

Kick stands keep bicycles upright when parked, and bike locks deter theft. Front-mounted baskets , front or rear luggage carriers or racks, and panniers mounted above either or both wheels can be used to carry equipment or cargo.

Pegs can be fastened to one, or both of the wheel hubs to either help the rider perform certain tricks, or allow a place for extra riders to stand, or rest.

Training wheels are sometimes used when learning to ride. Toe-clips and toestraps and clipless pedals help keep the foot locked in the proper pedal position and enable cyclists to pull and push the pedals.

Technical accessories include cyclocomputers for measuring speed, distance, heart rate, GPS data etc. Other accessories include lights , reflectors, mirrors, racks, trailers, bags, water bottles and cages , and bell.

It is more common to see bicycles with bottle generators, dynamos, lights, fenders, racks and bells in Europe.

Bicyclists also have specialized form fitting and high visibility clothing. Bicycle helmets can reduce injury in the event of a collision or accident, and a suitable helmet is legally required of riders in many jurisdictions.

Helmets may be classified as an accessory [52] or as an item of clothing. Bike trainers are used to enable cyclists to cycle while the bike remains stationary.

They are frequently used to warm up before races or indoors when riding conditions are unfavorable. Bicycles can also be fitted with a hitch to tow a trailer for carrying cargo, a child, or both.

A number of formal and industry standards exist for bicycle components to help make spare parts exchangeable and to maintain a minimum product safety.

The International Organization for Standardization ISO has a special technical committee for cycles, TC, that has the scope of "Standardization in the field of cycles, their components and accessories with particular reference to terminology, testing methods and requirements for performance and safety, and interchangeability".

European cycle standards tend to describe minimum safety requirements, while ISO standards have historically harmonized parts geometry.

Maintenance of adequate tire inflation is the most frequent and troublesome concern for cyclists and many means and methods are employed to preserve pneumatic integrity.

Thicker tires, thicker tubes, tire liners of a number of rather impenetrable devices installed between the tire and tube , liquid sealing compounds squeezed into the tube, and automotive-style patch kits are all used to reliably contain the typical tire pressures of 40 to 60 pounds per square inch that are required for bicycle operation.

Thin, light bicycle tires are particularly vulnerable to penetration and subsequent deflation caused by goat's heads and other burs , colloquially known as stickers.

Inflation of bicycle tires to pressures higher than typical for automotive use requires special pumps. The complexity of bicycle tire maintenance and repair may cause many to not consider the bicycle for transport or leisure.

Some bicycle parts, particularly hub-based gearing systems, require considerable torque for dis-assembly and may thus need professional services.

Self-service and assisted-service maintenance and repair may be available. There are specialized bicycle tools for use both in the shop and on the road.

Many cyclists carry tool kits. These may include a tire patch kit which, in turn, may contain any combination of a hand pump or CO 2 Pump , tire levers , spare tubes , self-adhesive patches, or tube-patching material, an adhesive, a piece of sandpaper or a metal grater for roughing the tube surface to be patched , Special, thin wrenches are often required for maintaining various screw fastened parts, specifically, the frequently lubricated ball-bearing "cones".

There are also cycling specific multi-tools that combine many of these implements into a single compact device. More specialized bicycle components may require more complex tools, including proprietary tools specific for a given manufacturer.

The bicycle has had a considerable effect on human society, in both the cultural and industrial realms. Around the turn of the 20th century, bicycles reduced crowding in inner-city tenements by allowing workers to commute from more spacious dwellings in the suburbs.

They also reduced dependence on horses. To know more, read our Privacy policy. Type Straight Gay Shemale.

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