Category Archives: pameran sepeda Bicycles antik

Pameran Sepeda Antik

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SHOWCASE : PAMERAN SEPEDA ANTIK DAN LOGONYA.   

                                       

FRAME : INTRODUKSI

Saat ini sepeda antik sudah mulai langka dan peminatnya juga sudah meningkat. Pada tahun 1989, penulis masih sempat melihat di pasar senin sebelah statsiun ,sangat banyak sepda antik dijual sperti sepeda merk fonger, dan kemudian saat putra penulis Anton kuliah di Jogya tahun 1996 dibeli sepeda agar praktis pergi kuliah dari temapt kos yang kemudianzs etelah tamat dibawa pulang guna dipakai pembantu rumah tangga. Saat Anton masih kecil ada sepeda anak-anak yang dipergunakan untuk latihan naik sepeda bersama kakanya Albert,waktu pindah dijual. Pernah sebuah sepeda wahita dicuri di rumah jalan Bundo kandung Padang . saat di jkarta  sepeda tidak begitu diperlukan,- Penulis memperoleh banyak info dari beberapa teman kolektor sehinhha  pameran ini dpat terlaksana,- Silahkan bagi pencinta sepeda antik untuk menikmati pameran ini.

FRAME : KISAH PEDAGANG  SEPEDA ANTIK( OLEH SULKAN)

1.Sepeda bingung

 Mengkoleksi barang antik, barang langka membutuhkan ketelatenan yang cukup besar. Mengkoleksi suatu barang biasanya tidak terlepas dari hobi yang dimilikinya. Kalau sudah menyangkut hobi, urusan modal atau harga dan biaya yang dikeluarkan untuk merawat dan mempercantik barang koleksi tidak bisa dibandingkan dengan nilai harga barang lain apalagi dengan harga beras.

Tidak bisa dibayangkan seorang penggemar sepeda motor honda CB mengeluarkan ongkos hingga 10 juta hanya untuk menuruti hasrat merawat dan memodifikasi CB-nya. Padahal dia beli CB itu dulunya cuman 2,5 juta (sepeti saya baca di sebuah majalah otomotif tapi lupa namanya). Rp 10 juta ditambah 2,5 juta = 12,5 juta hampir sebanding dengan harga motor GL Max baru yang masih kinyis-kinyis. Sungguh tidak masuk akal. Apakah bisa dibilang ini pemborosan atau orang gak waras ?. Mungkin iya karena ongkos yang sangat mahal jika dilihat dari kacamata dapur. Tapi dari sisi kepuasan yang diraih si penggila motor CB tadi dengan hasil modifikasinya, rasanya tidak bisa disetarakan dengan rupiah yang dikeluarkan.

Itulah yang namanya hobi, apapun akan dilakukan, berapapun akan dikeluarkan, mahalpun akan dibeli demi kepuasan hawa hobi.

klik memperbesar sepeda bingung
Tidak beda dengan penggila sepeda onthel yang sekarang lagi marak di tanah air. Melihat onthel yang menarik rasanya seperti “kemecer” ingin memiliki. Seperti melihat Sandra Dewi atau Luna Maya (lagi-lagi Luna Maya, awas terkena rrRaccoonnn onthel..)
Gak inget lagi dirumah sudah berjubel sepedah onthel yang dipunyai.
Seperti saat melihat koleksi peng-GANDRUNG onthel pakde Mulyadi Lubis. Ada sepeda yang membuat saya bingung. Seperti sepeda Jengki tapi jelas bukan, kelihatan kayak onthel kebo tapi masak iya. Gak tahulah ini sepeda apa. Tidak ada petunjuk yang jelas hanya ada tulisan di tromol belakang tapi sayangnya saya lupa karna waktu motret memori kamera habis dan tidak saya catat tulisannya. Yang saya inget ada stiker pajak tahun 1953 dan 1960 nempel dibodinya.
Garpu depan rangkap dua (sayang fotonya agak gelap). Diragangan tengah jarak antara sisi atas dan bawah sangat tidak umum, ini yang bikin saya yakin bukan model sepeda Jengki. Beberapa asesoris onthel ikut melengkapi, seperti lampu belakang, klunthungan sapi made in Thailand yang nggantung di lampu depan yang unik, sadel tuebal yang tidak match (serasi) dengan ukuran sepeda.
klik memperbesar Rangka sepeda bingungAda asesoris onthel lain yang saya sampai terkekeh ketawa dan geleng-geleng. Tas kulit dibelakang keliatan sepuh/tua dan bernuansa DOELOE serta diatasnya ada tembak jadul menghadap kebelakang (menghadang musuh dari belakang ??) atau kalau diperlukan bisa di panggul di pundak pengonthel. ….Ampuh tenan.
Tapi tetap saja bikin bingung ini sepeda apa. Barangkali para onthelis punya review atau masukan akan sangat membantu saya. Pakde Mul punya sebutan khusus untuk sepeda ini, pakde menyebutnya sepeda wandu (wandu = tidak laki-laki juga tidak perempuan alias bencong). Hah ada-ada ajah pakde ini.

 2.Mesam-mesem ngonthel sepedah

klik untuk memperbesar Fongers berangkat touringBersepeda onthel merupakan kebanggan bagi sebagian orang. Selain menyehatkan, bagi para pehobi naik onthel adalah sarana unjuk gigi menampilkan onthel koleksinya, sarana berkumpul dengan komunitas penggila onthel lain untuk menambah koneksi, sekedar ikut-ikutan bahkan ada yang bertujuan mencari penghasilan tambahan dengan jual beli sepeda onthel.
Bisa dibayangkan betapa bangganya naik sepeda onthel merk FONGERS dengan asesoris yang lumayan lengkap. Tas depan model pistol, tas belakang bentuk kotak, tas kecil dibelakang sadel dan tutup roda belakang yang sangat aman.
klik untuk memperbesar asesoris onthel Tas model pistolTas tengah model pistol, bahan dari kulit dengan 2 saku samping dikerjakan dengan rapi terikat kokoh di bodi, menambah pede dan ganteng penampilan onthel kita.
klik untuk memperbesar asesoris onthel Tas kotak belakangTas kotak belakang. Warna hitam berbahan bagus, nyantol kuat di boncengan, terinspirasi tas pak pos atau kurir dengan penutup yang sangat rapet sehingga dokumen, ijasah atau surat lamaran kerja tidak mungkin semburat kena angin kenceng sekalipun. (memang mau nglamar kerjaan di mana mass…)
klik untuk memperbesar asesoris onthel Tas sadelKalau yang ini sangat spesial. Tas sadel ukuran kecil sesuai lebar sadel tumpuannya. Bahannya tebal sekali dijahit benang model menyilang. Pastinya kakek-kakek dulu menyimpan tembakau, cengkeh, klembak, kertas papeer dan perlengkapan ngudut/ngrokok di tas ini. Dijamin rokok TingWe (ngelinting dhewe) gak bakal diambil orang sembarangan karena untuk mbukaknya lumayan susah kudu pake dua tangan. Siapa pula yang mau nyopet tembakau kiloan …
klik untuk memperbesat asesoris onthel Tutup roda belakangTutup roda belakang samping kiri dan kanan, modelnya mirip apa yah..seperti kipas mungkin. Tidak akan menghalangi kunci roda belakang karena sudah dibuat lubang khusus. Barang bawaan tidak akan tergores roda dengan pelindung ini. Yang lebih penting kaki si thole kecil gak perlu diikat di bodi tengah karena kuatir kena jeruji. Kaki kok diikat kayak tahanan ajah…he..he. Kata iklan tivi “perlindungan maximal”

Kalau sudah seperti ini mengayuh sepeda onthel bisa mesam-mesem karena dilirik banyak orang, apalagi ngliriknya rada ndelongop sesekali menelan ludah. Pengonthel lain mengamati dari samping dan belakang. Awas digambar sama orang….ngonthel teruss.
Tapi rasanya asesoris onthel masih ada yang kurang, mungkin onthelis lain bisa mengomentari atau menambahkan. Sharing-sharing wawasan onthel-lah.

 3.GAZELA berasa disoerga

klik untuk memperbesar Gazelle berasa disoerga

Gazelle sepeda telah kesohor,
Ringan, ladjoe, kokoh dan moerah;
Lagi poela bisa dibikin obor,
Mentjari oentoeng penambah nafkah.

Merk Gazelle kereta angin pilihan
Ringan dan tjantik tiada bertara
Potongan molek seperti parawan
Doedoek diatasnja berasa disoerga

Dua bait puisi diatas saya kutip dari dua brosur gambar iklan sepeda Gazelle yang terbit tahun 1939 yang katanya wong-cilik diambil dari buku “1892-1967 : 75 jaar Gazelle” (1892-1967 : 75 tahun Gazelle).
Kalau ditahun segitu (aku belum lahir) saja merek Gazelle sudah begitu terkenal, maka tidak salah jika tahun sekarang begitu bangga ngayuh onthel Gazelle. Walaupun tidak 100 persen orisinil, tapi bisa tetap gayeng kalau dikasih asesoris onthel seperti tas kulit bentuk segitiga. Bahan kulit yang tebal nyanthol kuat dibodi dengan tiga ikatan. Sebelah kanan ada 2 saku salah satunya bisa buat tempat minum aqua. Sebelah kiri juga dua saku masih ditambah 1 slerekan (resleting).

klik memperbesar asesoris onthel tas depan segitiga-1klik memperbesar asesoris onthel tas depan segitiga-2klik memperbesar asesoris onthel topi polka coklat

Kalau sepeda sudah nampak cool jangan lupa penampilan si pengonthel juga mesti disesuaikan. Pakai topi POLKA (nggak tau polka itu kepanjangannya apa, mungkin onthelis bisa kasih masukan). Hnah.. kalau pakai topi polka ndak usah kuatir bentuk kepala anda yang tidak bagus atau rambut kepala botak, semua bisa lebih berasa “sampurnah”.
Seperti toean kompeni atau toean meneer….

FRAME TIGA : SEPEDA LELAKI ANTIK

FRAME EMPAT : SEPEDA WANITA ANTIK

FRAME LIMA : KOLEKSI SEPEDA ANTIK DAN LOGO DISUSUN SESUAI SEJARAH

Bicycle

From Wikipedia, the free encyclopedia

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For other uses, see Bicycle (disambiguation).

A mountain bike, a popular multi-use bicycle.

A European city bike, an example of a bicycle designed for transportation. Also an example of a motorized bicycle.

A bicycle, also known as a bike, pushbike or cycle, is a pedal-driven, human-powered, single-track vehicle, having two wheels attached to a frame, one behind the other. A person who rides a bicycle is called a cyclist or a bicyclist.

Bicycles were introduced in the 19th century and now number about one billion worldwide, twice as many as automobiles.[1] They are the principal means of transportation in many regions. They also provide a popular form of recreation, and have been adapted for such uses as children’s toys, adult fitness, military and police applications, courier services and bicycle racing.

The basic shape and configuration of a typical upright bicycle has changed little since the first chain-driven model was developed around 1885.[2] However, many details have been improved, especially since the advent of modern materials and computer-aided design. These have allowed for a proliferation of specialized designs for particular types of cycling.

The invention of the bicycle has had an enormous impact on society, both in terms of culture and of advancing modern industrial methods. Several components that eventually played a key role in the development of the automobile were originally invented for the bicycle – e.g., ball bearings, pneumatic tires, chain-driven sprockets, spoke-tensioned wheels, etc.[citation needed]

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[edit] History

Wooden draisine (around 1820), the first two-wheeler and as such the archetype of the bicycle

Multiple innovators contributed to the history of the bicycle by developing precursor human-powered vehicles. The documented ancestors of today’s modern bicycle were known as draisines, hobby horses, or push bikes (and modern bicycles are sometimes still called push bikes outside of North America). Being the first human means of transport to make use of the two-wheeler principle, the draizine (or Laufmaschine, “walking machine”), invented by the German Baron Karl von Drais, is regarded as the forerunner of the modern bicycle. It was introduced by Drais to the public in Mannheim in summer 1817 and in Paris in 1818.[3] Its rider sat astride a wooden frame supported by two in-line wheels and pushed the vehicle along with his/her feet while steering the front wheel.

Michaux’ son on velocipede 1868

Thomas McCall in 1869 on his velocipede

In the early 1860s, Frenchmen Pierre Michaux and Pierre Lallement took bicycle design in a new direction by adding a mechanical crank drive with pedals on an enlarged front wheel (the velocipede). Another French inventor by the name of Douglas Grasso had a failed prototype of Pierre Lallement’s bicycle several years earlier. Several inventions followed using rear wheel drive, the best known being the rod-driven velocipede by Scotsman Thomas McCall in 1869. The French creation, made of iron and wood, developed into the “penny-farthing” (historically known as an “ordinary bicycle”, a retronym, since there was then no other kind).[4] It featured a tubular steel frame on which were mounted wire-spoked wheels with solid rubber tires. These bicycles were difficult to ride due to their very high seat and poor weight distribution. In 1868 a Michaux cycle was brought to Coventry, England by Rowley Turner, sales agent of the Coventry Sewing Machine Company (which soon became the Coventry Machinist Company). His uncle, Josiah Turner, together with business partner James Starley used this as a basis for the ‘Coventry Model’ in what became Britain’s first cycle factory.[5]

A penny-farthing or ordinary bicycle photographed in the Škoda Auto museum in the Czech Republic

Bicycle in Plymouth, England at the start of the 20th century

The dwarf ordinary addressed some of these faults by reducing the front wheel diameter and setting the seat further back. This necessitated the addition of gearing, effected in a variety of ways, to efficiently use the power available. However, having to both pedal and steer via the front wheel remained a problem. J. K. Starley (nephew of James Starley), J. H. Lawson, and Shergold solved this problem by introducing the chain drive (originated by the unsuccessful “bicyclette” of Englishman Henry Lawson),[6] connecting the frame-mounted cranks to the rear wheel. These models were known as dwarf safeties, or safety bicycles, for their lower seat height and better weight distribution. (Although without pneumatic tires the ride of the smaller wheeled bicycle would be much rougher than that of the larger wheeled variety.) Starley’s 1885 Rover, manufactured in Coventry, England,[7] is usually described as the first recognizably modern bicycle. Soon, the seat tube was added, creating the double-triangle diamond frame of the modern bike.

Further innovations increased comfort and ushered in a second bicycle craze, the 1890s’ Golden Age of Bicycles. In 1888, Scotsman John Boyd Dunlop introduced the first practical pneumatic tire, which soon became universal. Soon after, the rear freewheel was developed, enabling the rider to coast. This refinement led to the 1905 invention of coaster brakes. Derailleur gears and hand-operated cable-pull brakes were also developed during these years, but were only slowly adopted by casual riders. By the turn of the century, cycling clubs flourished on both sides of the Atlantic, and touring and racing became widely popular.

Bicycles and horse buggies were the two mainstays of private transportation just prior to the automobile, and the grading of smooth roads in the late 19th century was stimulated by the widespread advertising, production, and use of these devices.

[edit] Uses

Transporting milk churns in Kolkata, India

Bicycles have been and are employed for many uses:

Working bicycle in Amsterdam, Netherlands

[edit] Technical aspects

A Half Wheeler trailer bike at the Golden Gate Bridge

The bicycle has undergone continual adaptation and improvement since its inception. These innovations have continued with the advent of modern materials and computer-aided design, allowing for a proliferation of specialized bicycle types.

[edit] Types

Main article: List of bicycle types

A BMX bike, an example of a bicycle designed for sport

Bicycles can be categorized in different ways: e.g. by function, by number of riders, by general construction, by gearing or by means of propulsion. The more common types include utility bicycles, mountain bicycles, racing bicycles, touring bicycles, hybrid bicycles, cruiser bicycles, and BMX Bikes. Less common are tandems, lowriders, tall bikes, fixed gear, folding models, amphibious bicycles and recumbents (one of which was used to set the IHPVA Hour record).

Unicycles, tricycles and quadracycles are not strictly bicycles, as they have respectively one, three and four wheels, but are often referred to informally as “bikes”.

Bicycles leaning in a turn

[edit] Dynamics

A bicycle stays upright while moving forward by being steered so as to keep its center of gravity over the wheels.[8] This steering is usually provided by the rider, but under certain conditions may be provided by the bicycle itself.[9]

The combined center of mass of a bicycle and its rider must lean into a turn to successfully navigate it. This lean is induced by a method known as countersteering, which can be performed by the rider turning the handlebars directly with the hands[10] or indirectly by leaning the bicycle.[11]

Short-wheelbase or tall bicycles, when braking, can generate enough stopping force at the front wheel to flip longitudinally.[12] The act of purposefully using this force to lift the rear wheel and balance on the front without tipping over is a trick known as a stoppie, endo or front wheelie.

[edit] Performance

Main article: Bicycle performance

The bicycle is extraordinarily efficient in both biological and mechanical terms. The bicycle is the most efficient self-powered means of transportation in terms of energy a person must expend to travel a given distance.[13] From a mechanical viewpoint, up to 99% of the energy delivered by the rider into the pedals is transmitted to the wheels, although the use of gearing mechanisms may reduce this by 10–15%.[14][15] In terms of the ratio of cargo weight a bicycle can carry to total weight, it is also an efficient means of cargo transportation.

A human traveling on a bicycle at low to medium speeds of around 10–15 mph (15–25 km/h) uses only the energy required to walk. Air drag, which is proportional to the square of speed, requires dramatically higher power outputs as speeds increase. If the rider is sitting upright, the rider’s body creates about 75% of the total drag of the bicycle/rider combination. Drag can be reduced by seating the rider in a supine position or a prone position, thus creating a recumbent bicycle or human powered vehicle. Drag can also be reduced by covering the bicycle with an aerodynamic fairing.

In addition, the carbon dioxide generated in the production and transportation of the food required by the bicyclist, per mile traveled, is less than 1/10th that generated by energy efficient cars.[16]

[edit] Construction and parts

In its early years, bicycle construction drew on pre-existing technologies. More recently, bicycle technology has in turn contributed ideas in both old and new areas.

[edit] Frame

Main article: Bicycle frame

Diagram of a bicycle.

The great majority of today’s bicycles have a frame with upright seating which looks much like the first chain-driven bike.[2] Such upright bicycles almost always feature the diamond frame, a truss consisting of two triangles: the front triangle and the rear triangle. The front triangle consists of the head tube, top tube, down tube and seat tube. 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 fork ends. 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.

A Triumph with a step-through frame.

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, 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.

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 1934 by the Union Cycliste Internationale.[17]

Historically, materials used in bicycles have followed a similar pattern as in aircraft, the goal being high strength and low weight. Since the late 1930s alloy steels have been used for frame and fork tubes in higher quality machines. Celluloid found application in mudguards, and aluminum alloys are increasingly used in components such as handlebars, seat post, and brake levers. In the 1980s aluminum alloy frames became popular for their lightness, and their affordability now makes them common. More expensive carbon fiber and titanium frames are now also available, as well as advanced steel alloys and even bamboo.[18]

[edit] Drivetrain and gearing

A set of rear sprockets (also known as a cassette) and a derailleur

For more details on this topic, see Bicycle drivetrain systems.

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 relatively small number of bicycles use a shaft drive to transmit power. A very small number of bicycles (mainly single-speed bicycles intended for short-distance commuting) use a belt drive as an oil-free way of transmitting power.

Since cyclists’ legs are most efficient over a narrow range of pedaling speeds (cadence), a variable gear ratio helps a cyclist to maintain an optimum pedalling speed while covering varied terrain. As a first approximation, utility bicycles often use a hub gear with a small number (3 to 8) of widely spaced gears, road bicycles and racing bicycles use derailleur gears with a moderate number (10 to 22) of closely spaced gear ratios, while mountain bicycles, hybrid bicycles, and touring bicycles use dérailleur gears with a larger number (15 to 33) of moderately spaced gear ratios, often including an extremely low gear (“granny gear”) for climbing steep hills.

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: a cyclist could use a high gear when cycling downhill, a medium gear when cycling on a flat road, and a low gear when cycling uphill. 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.

A bicycle with shaft drive instead of a chain

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: two-speed hub gear integrated with chain ring, up to 3 chain rings, up to 11 sprockets, hub gear built in to rear wheel (3-speed to 14-speed). 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).

With a shaft drive transmission, a gear set at the bottom bracket turns the shaft, which then turns the rear wheel via a gear set connected to the wheel’s hub. There is some small loss of efficiency due to the two gear sets needed. The only gearing option with a shaft drive is to use a hub gear.

[edit] Steering and seating

The handlebars turn the fork and the front wheel via the stem, which rotates within the headset. Three styles of handlebar are common. Upright handlebars, the norm in Europe and elsewhere until the 1970s, 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.

A Selle San Marco saddle designed for women

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, although bikes typically are sold with saddles most appropriate for men.

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.

[edit] Brakes

Main article: Bicycle brake systems

Linear-pull brake, also known by the Shimano trademark: V-Brake, on rear wheel of a mountain bike

Modern bicycle brakes may be: rim brakes, in which friction pads are compressed against the wheel rims; internal hub brakes, in which the friction pads are contained within the wheel hubs; or disc brakes, with a separate rotor for braking. Disc brakes are more common on off-road bicycles, tandems and recumbent bicycles than on road-specific bicycles.

A front disc brake, mounted to the fork and hub

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. 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 1960s, and are common in children’s bicycles.

Track bicycles do not have dedicated brakes. Brakes are not required for riding on a track 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 crank is moving. To slow down, the rider applies resistance to the pedals – this acts as a braking system which can be as effective as a friction-based rear wheel brake, but not as effective as a front wheel brake.[19]

[edit] Suspension

Main article: Bicycle suspension

Bicycle suspension refers to the system or systems used to suspend the rider and all or part of the bicycle. This serves two purposes:

  • To keep the wheels in continuous contact with rough surfaces to improve control.
  • To isolate the rider and luggage from jarring due to rough surfaces.

Bicycle suspensions are used primarily on mountain bicycles, but are also common on hybrid bicycles, and can even be found on some road bicycles, as they can help deal with problematic vibration. 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.

[edit] Wheels and tires

Main article: Bicycle wheel

The wheel axle fits into fork ends in the frame and forks. A pair of wheels may be called a wheelset, especially in the context of ready-built “off the shelf”, performance-oriented wheels.

Main article: Bicycle tire

Tires vary enormously. Skinny 18 to 25 millimeters wide, road-racing tires may be completely smooth, or (slick). On the opposite extreme, off-road tires are 38 to 64 millimeters wide and usually have a deep tread for gripping in muddy conditions or metal studs for ice.

[edit] Accessories, repairs, and tools

Touring bicycle equipped with head lamp, pump, rear rack, fenders/mud-guards, water bottles and cages, and numerous saddle-bags.

Puncture repair kit with tire levers, sandpaper to clean off an area of the inner tube around the puncture, a tube of rubber solution (vulcanizing fluid), round and oval patches, a metal grater and piece of chalk to make chalk powder (to dust over excess rubber solution). Kits often also include a wax crayon to mark the puncture location.

Some components, which are often optional accessories on sports bicycles, are standard features on utility bicycles to enhance their usefulness and comfort. 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 a bicycle upright when parked, while a bike lock will help prevent it from being stolen. Front-mounted baskets for carrying goods are often used. Luggage carriers and panniers mounted above the rear tire can be used to carry equipment or cargo. Parents sometimes add rear-mounted child seats and/or an auxiliary saddle fitted to the crossbar to transport children.

Toe-clips and toestraps and clipless pedals help keep the foot locked in the proper position on the pedals, and enable the cyclist to pull as well as push the pedals—although not without their hazards, e.g. may lock foot in when needed to prevent a fall. Technical accessories include cyclocomputers for measuring speed, distance, heart rate, GPS data etc. Other accessories include lights, reflectors, security locks, mirror, water bottles and cages, and bell.[20]

Bicycle helmets may help reduce injury in the event of a collision or accident, and a certified helmet is legally required for some riders in some jurisdictions. Helmets are classified as an accessory[20] or an item of clothing by others.[21]

Many cyclists carry tool kits. These may include a tire patch kit (which, in turn, may contain any combination of a hand pump or CO2 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),[22][23] and sometimes even a block of French chalk.), wrenches, hex keys, screwdrivers, and a chain tool. 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.

Some bicycle parts, particularly hub-based gearing systems, are complex, and many cyclists prefer to leave maintenance and repairs to professional bicycle mechanics. In some areas it is possible to purchase road-side assistance from companies such as the Better World Club. Other cyclists maintain their own bicycles, perhaps as part of their enjoyment of the hobby of cycling or simply for economic reasons. The ability to repair and maintain your own bicycle is also celebrated within the DIY movement.

[edit] Standards

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, TC149, that has the following scope: “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.”

CEN, European Committee for Standardisation, also has a specific Technical Committee, TC333, that defines European standards for cycles. Their mandate states that EN cycle standards shall harmonize with ISO standards. Some CEN cycle standards were developed before ISO published their standards, leading to strong European influences in this area. European cycle standards tend to describe minimum safety requirements, while ISO standards have historically harmonized parts geometry.[24]

[edit] Parts

For details on specific bicycle parts, see list of bicycle parts and category:bicycle parts.

[edit] Social and historical aspects

The bicycle has had a considerable effect on human society, in both the cultural and industrial realms.

[edit] In daily life

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.

A bike-sharing station in Barcelona

Recently, several European cities and Montreal have implemented successful schemes known as community bicycle programs or bike-sharing. These initiatives complement a city’s public transport system and offer an alternative to motorized traffic to help reduce congestion and pollution. In Europe, especially in The Netherlands and parts of Germany and Denmark, commuting by bicycle is very common. In the Danish capital of Copenhagen, a cyclists’ organization runs a Cycling Embassy, that promotes biking for commuting and sightseeing. In the UK there’s a tax break scheme (IR 176) that allows employees to buy a new bicycle tax free to use for commuting.[citation needed]

In The Netherlands, all train stations are equipped with provisions for bicycle parking for a small fee and the larger ones also with bicycle repair shops, and cycling is so popular that the parking capacity is sometimes exceeded.[25] In Trondheim in Norway, the Trampe bicycle lift has been developed to encourage cyclists by giving assistance on a steep hill. Action buses In Canberra, Australia, offers bicycle rack on the front of the bus to allow riders to mount their bicycle free of charge, and previously it would allow bicycle riders to ride on buses for free.

In cities where the bicycle is not an integral part of the planned 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. 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.[26]

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.[citation needed]

[edit] Female emancipation

Woman with bicycle, 1890s

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 they 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. American Susan B. Anthony said in a New York World interview on February 2, 1896: “Let me tell you what I think of bicycling. I think it has done more to emancipate women than anything else in the world. It gives women a feeling of freedom and self-reliance. I stand and rejoice every time I see a woman ride by on a wheel…the picture of free, untrammeled womanhood.” In 1895 Frances Willard, the tightly laced president of the Women’s Christian Temperance Union, wrote a book called How I Learned to Ride the Bicycle, in which she praised the bicycle she learned to ride late in life, and which she named “Gladys”, for its “gladdening effect” on her health and political optimism. Willard used a cycling metaphor to urge other suffragists to action, proclaiming, “I would not waste my life in friction when it could be turned into momentum.”

The bicycle craze in the 1890s also led to a movement for so-called rational dress, which helped liberate women from corsets and ankle-length skirts and other restrictive garments, substituting the then-shocking bloomers.

[edit] Economic implications

Columbia Bicycles advertisement from 1886

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.

They also served to teach the industrial models later adopted, including mechanization and mass production (later copied and adopted by Ford and General Motors),[27] vertical integration[28] (also later copied and adopted by Ford), aggressive advertising[29] (as much as 10% of all advertising in U.S. periodicals in 1898 was by bicycle makers),[30] lobbying for better roads (which had the side benefit of acting as advertising, and of improving sales by providing more places to ride),[31] all first practised by Pope.[31] In addition, bicycle makers adopted the annual model change[32][33] (later derided as planned obsolescence, and usually credited to General Motors), which proved very successful.[34]

Furthermore, early bicycles were an example of conspicuous consumption, being adopted by the fashionable elites.[35] In addition, by serving as a platform for accessories, which could ultimately cost more than the bicycle itself, it paved the way for the likes of the Barbie doll.[36]

Moreover, they helped create, or enhance, new kinds of businesses, such as bicycle messengers,[37] travelling seamstresses,[38] riding academies,[39] and racing rinks[40] (Their board tracks were later adapted to early motorcycle and automobile racing.) Also, there were a variety of new inventions, such as spoke tighteners,[41] and specialized lights,[42] socks and shoes,[43] and even cameras (such as the Eastman Company‘s Poco).[44] Probably the best known and most widely used of these inventions, adopted well beyond cycling, is Charles Bennett’s Bike Web, which came to be called the “jock strap”.[45]

A man uses a bicycle to carry goods in Ouagadougou, Burkina Faso

They also presaged a move away from public transit[46] that would explode with the introduction of the automobile.

J. K. Starley’s company became the Rover Cycle Company Ltd. in the late 1890s, and then simply the Rover Company when it started making cars. The Morris Motor Company (in Oxford) and Škoda also began in the bicycle business, as did the Wright brothers.[47] Alistair Craig, whose company eventually emerged to become the engine manufacturers Ailsa Craig, also started from manufacturing bicycles, in Glasgow in March 1885.

In general, U.S. and European cycle manufacturers used to assemble cycles from their own frames and components made by other companies, although very large companies (such as Raleigh) used to make almost every part of a bicycle (including bottom brackets, axles, etc.) 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. For example, some 60% of the world’s bicycles are now being made in China. 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.[48] One of the major reasons for the proliferation of Chinese-made bicycles in foreign markets is the lower cost of labor in China.[49]

One of the profound economic implications of bicycle use is that it liberates the user from oil consumption (Ballantine, 1972). The bicycle is a inexpensive, fast, healthy and environmentally friendly mode of transport (Illich, 1974)

[edit] Legal requirements

Reflectors for riding after dark

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.[50]

The 1968 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.

Some countries require child and/or adult cyclists to wear helmets, as this may protect riders from head trauma. Countries which require adult cyclists to wear helmets include Spain, Canada, New Zealand and Australia.

[edit] See also

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General

Women on bicycles on unpaved road, USA, late 19th Century

Special uses and related vehicle types

Other

[edit] Notes

  1. ^ DidYouKnow.org. There are about a billion or more bicycles in the world.. Retrieved 30 July 2006.
  2. ^ a b Herlihy, David V. (2004). Bicycle: the history. Yale University Press. pp. 200–250. ISBN 0-300-10418-9
  3. ^ “Canada Science and Technology Museum: Baron von Drais’ Bicycle”. 2006. http://www.sciencetech.technomuses.ca/english/collection/cycles2.cfm. Retrieved 2006-12-23. 
  4. ^ Norcliffe, Glen. The Ride to Modernity: The Bicycle in Canada, 1869-1900 (Toronto: University of Toronto Press, 2001), p.50, citing Derek Roberts.
  5. ^ McGrory, David. A History of Coventry (Chichester: Phillimore, 2003), p.221.
  6. ^ Norcliffe, p.47.
  7. ^ McGrory, p.222.
  8. ^ Various (9 December 2006). “Like falling off”. New Scientist (2581): 93. http://www.newscientist.com/article/mg19225812.400. Retrieved 27 January 2009. 
  9. ^ Meijaard, Papadopoulos, Ruina, and Schwab, J.P.; Papadopoulos, Jim M.; Ruina, Andy; Schwab, A.L. (2007). “Linearized dynamics equations for the balance and steer of a bicycle: a benchmark and review”. Proc. R. Soc. A. 463 (2084): 1955–1982. doi:10.1098/rspa.2007.1857
  10. ^ Wilson, David Gordon; Jim Papadopoulos (2004). Bicycling Science (Third ed.). The MIT Press. pp. 270–272. ISBN 0-262-73154-1
  11. ^ Fajans, Joel (July 2000). “Steering in bicycles and motorcycles” (PDF). American Journal of Physics 68 (7): 654–659. doi:10.1119/1.19504. http://socrates.berkeley.edu/~fajans/pub/pdffiles/SteerBikeAJP.PDF. Retrieved 2006-08-04. 
  12. ^ Cossalter, Vittore (2006). Motorcycle Dynamics (Second ed.). Lulu.com. pp. 241–342. ISBN 978-1-4303-0861-4
  13. ^ “Bicycle Technology”, S.S. Wilson, Scientific American, March 1973
  14. ^ “Johns Hopkins Gazette”, 30 August 1999
  15. SELESAI@HAKCIPTA DR IWAN SUWANDY 2010