Head Tube
The head tube is the part of a cycle's tubular frame within which the front fork steerer tube is mounted. On a motorcycle, the "head tube" is normally called the steering head. On bicycles the manufacturer's brand located on the head tube is known as a head badge. Bearings The head tube holds the bearings which allow the front fork steerer tube to pivot freely. * In bicycles, these bearings are collectively called the headset. These are usually ball bearings, although some headsets use needle bearings. * In motorcycles, these bearings are also referred to as headset, or ''steering head bearings'' or ''steering neck bearings''. These are usually tapered roller bearings. Caster angle The steering axis angle, also called caster angle, is the angle that the head tube and hence the steering axis makes with the horizontal or vertical, depending on convention. The steering axis is the axis about which the steering mechanism (fork, handlebars, front wheel, etc.) pivots. * In bic ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Frame Met Balhoofd
A frame is often a structural system that supports other components of a physical construction and/or steel frame that limits the construction's extent. Frame and FRAME may also refer to: Physical objects In building construction *Framing (construction), a building term known as light frame construction *Framer, a carpenter who assembles major structural elements in constructing a building *A-frame, a basic structure designed to bear a load in a lightweight economical manner **A-frame house, a house following the same principle *Door frame or window frame, fixed structures to which the hinges of doors or windows are attached *Frame and panel, a method of woodworking *Space frame, a method of construction using lightweight or light materials *Timber framing, a method of building for creating framed structures of heavy timber or willow wood In vehicles *Frame (aircraft), structural rings in an aircraft fuselage *Frame (nautical), the skeleton of a boat *Bicycle frame, the main c ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Bicycle Fork
A bicycle fork is the part of a bicycle that holds the front wheel. A fork typically consists of two ''blades'' which are joined at the top by a fork ''crown.'' The crown is often at the front. Most suspension forks have an arch connecting the two side of the lowers (the part connected to the axle.) It is often in front of the stanchions (shaft the lowers slide on) but not always. Above the crown, a ''steerer tube'' attaches the fork to the bicycle and the Bicycle handlebar, handlebars (via a Stem (bike), stem) allowing the rider to steer the bicycle. The steerer tube of the fork interfaces with the Bicycle frame, frame via Bearing (mechanical), bearings called a headset (bicycle part), headset mounted in the head tube. At the bottom of the fork, ''fork ends'' hold the wheel. Usually, either the axle is bolted to the fork, or a ''quick release skewer'' passes through a hollow axle, clamping the axle to the fork. A bicycle dropout (drop out, frame end, or fork end), is a slot in ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Head Badge
A head badge is a List of bicycle manufacturers, manufacturer's or brand logo affixed to the head tube of a bicycle. Head badges may be made of metal or plastic, and they may be held in place with adhesive, screws, or rivets. Some are simply Label, stickers, apparel, decals, or painted logos. Head badges for a single brand may change from year to year or from model to model, as demonstrated by the variety (5) of Trek head badges pictured in the gallery below. Other uses The term head badge has also been used to describe other logos: * An emblem on the cowl of an aircraft. * An emblem on a military uniform hat. Gallery File:Araya head badge.JPG, Araya File:Beacon head badge.JPG, Beacon File:Bianchi head badge.JPG, Bianchi (company), Bianchi File:Bike Friday Head Badge.JPG, Bike Friday File:Burley HeadBadge.jpg, Burley Design, Burley File:C Itoh head badge.JPG, C. Itoh File:Cannondale Head Badge 1.png, Cannondale File:Cinelli Speciale Corsa 1952-1953 126.jpg, Cinelli(1947� ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Headset (bicycle Part)
The headset is the set of components on a bicycle that provides a rotatable interface between the bicycle fork and the head tube of a bicycle frame. The tube through which the steerer of the fork passes is called the head tube. A typical headset consists of two cups that are pressed into the top and bottom of the headtube. Inside the two cups are bearings which provide a low friction contact between the bearing cup and the steerer. Sizes Traditional bicycle head tubes and headsets are sized for a diameter steerer tube (also known as the fork column). Many frame and fork manufacturers are now building their parts around a steerer tube with a diameter of . The larger diameter of the head tube and headset gives added stiffness to the steering portion of the bicycle. Common sizes * steerer tube, this may have a fork crown (the base of the fork steerer tube) of a number of different dimensions, and milling may be necessary to make some headsets fit. **26.4 mm crown race (ISO stan ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Rolling-element Bearing
In mechanical engineering, a rolling-element bearing, also known as a rolling bearing,ISO 15 is a bearing (mechanical), bearing which carries a load by placing rolling elements (such as balls, cylinders, or cones) between two concentric, Groove (engineering), grooved rings called Race (bearing), races. The relative motion of the races causes the rolling elements to rolling, roll with very little rolling resistance and with little sliding (motion), sliding. One of the earliest and best-known rolling-element bearings is a set of logs laid on the ground with a large stone block on top. As the stone is pulled, the logs roll along the ground with little sliding friction. As each log comes out the back, it is moved to the front where the block then rolls onto it. It is possible to imitate such a bearing by placing several pens or pencils on a table and placing an item on top of them. See "bearing (mechanical), bearings" for more on the historical development of bearings. A rolling el ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Needle Roller Bearing
A needle roller bearing is a special type of roller bearing which uses long, thin cylindrical rollers resembling needles. Ordinary roller bearings' rollers are only slightly longer than their diameter, but needle bearings typically have rollers that are at least four times longer than their diameter. Like all bearings, they are used to reduce the friction of a rotating surface. Compared to ball bearings and ordinary roller bearings, needle bearings have a greater surface area in contact with the races, so they can support a greater load. They are also thinner, so they require less clearance between the axle and the surrounding structure. Needle bearings are heavily used in automobile components such as rocker arm pivots, pumps, compressors, and transmissions. The drive shaft of a rear-wheel drive vehicle typically has at least eight needle bearings (four in each U joint) and often more if it is particularly long, or operates on steep slopes. See also * Race (bearing) ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Caster Angle
250px, θ is the caster angle, the red line is the pivot line, and the grey area is the tire. 250px, Front suspension of a race carthe caster angle is formed by the line between upper and lower ball joint The caster angle or castor angle is the angular displacement of the steering axis from the vertical axis of a steered wheel in a car, motorcycle, bicycle, other vehicle or a vessel, as seen from the side of the vehicle. The steering axis in a car with dual ball joint suspension is an imaginary line that runs through the center of the upper ball joint to the center of the lower ball joint, or through the center of the kingpin for vehicles having a kingpin. Caster causes a wheel to align with the direction of travel, and can be accomplished either by caster displacement or caster angle. Caster displacement moves the steering axis ahead of the axis of wheel rotation, as with the front wheels of a shopping cart. Caster angle moves the steering axis from vertical. In automobi ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Rotation
Rotation or rotational/rotary motion is the circular movement of an object around a central line, known as an ''axis of rotation''. A plane figure can rotate in either a clockwise or counterclockwise sense around a perpendicular axis intersecting anywhere inside or outside the figure at a ''center of rotation''. A solid figure has an infinite number of possible axes and angles of rotation, including chaotic rotation (between arbitrary orientation (geometry), orientations), in contrast to rotation around a fixed axis, rotation around a axis. The special case of a rotation with an internal axis passing through the body's own center of mass is known as a spin (or ''autorotation''). In that case, the surface intersection of the internal ''spin axis'' can be called a ''pole''; for example, Earth's rotation defines the geographical poles. A rotation around an axis completely external to the moving body is called a revolution (or ''orbit''), e.g. Earth's orbit around the Sun. The en ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Track Bicycle
A track bicycle or track bike is a bicycle optimized for racing at a velodrome or outdoor track. Unlike road bicycles, the track bike is a fixed-gear bicycle; thus, it has only a single gear ratio and has neither a freewheel nor brakes. Bicycle tire, Tires are narrow and inflated to high pressure to reduce rolling resistance. History The first bicycle race is popularly held to have been a 1,200 meter race on the 31 May 1868 at the Parc de Saint-Cloud, Paris. It was won by expatriate Englishman James Moore (cyclist), James Moore who rode a wooden bicycle with iron bicycle tire, tires. The machine is now on display at the museum in Ely, Cambridgeshire, Ely, Cambridgeshire, England. The Union Cycliste Internationale was founded on 14 April 1900 by Belgium, the United States, France, Italy, and Switzerland to replace the International Cycling Association, which had been formed in 1892, over a row with Great Britain as well as because of other issues. Frame design A track bicyc ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Road Bicycle
The term road bicycle is used to describe bicycles built for traveling at speed on paved roads. Some sources use the term to mean racing bicycle. Other sources specifically exclude racing bicycles from the definition, using the term to mean a bicycle of a similar style but built more for endurance and less the fast bursts of speed desired in a racing bicycle; as such, they usually have more gear combinations and fewer hi-tech racing features. Certain of these bicycles have been referred to as 'sportive' bicycles to distinguish them from racing bicycles. Compared to other styles of bicycle, road bicycles share common features: * The tires are narrow, high-pressure, and smooth to decrease rolling resistance * The handlebars are bent ("dropped") to allow the rider position to be leaned forward and downward, which reduces the forward vertical cross-sectional area and thus highly reduces the air resistance * They usually use derailleur gears; however, single-speed and fixed-gea ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Streetfighter (motorcycle)
A streetfighter, muscle bike, or supernaked is a type of high-performance motorcycle. It is typically a large-displacement sport bike with the Motorcycle fairing, fairings and windscreen removed. Beyond simply removing fairings, specific changes that exemplify the streetfighter look are a pair of large, round headlights, tall, upright handlebars such as those on a motocross bike, and short, loud, lightweight mufflers, and changes in the sprockets to increase torque and acceleration at lower speeds. ''Streetfighters'' is also the name of a UK motorcycle magazine. Later streetfighters used custom-built frames intended to overcome the weakness of the tubular steel frames of the early 4-cylinder superbikes of the 1970s and 1980s. Many of these frames turned out to be "beautifully crafted pieces of metallurgical art," perhaps only unintentionally. Many were also originally racing machines. Made popular by European riders, this type of custom motorcycle gained worldwide popularity, an ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Cruiser (motorcycle)
A cruiser motorcycle is a motorcycle in the style of American machines from the 1930s to the early 1960s, including those made by Harley-Davidson, Indian (motorcycle), Indian, Excelsior Motor Manufacturing & Supply Company, Excelsior and Henderson Motorcycle, Henderson. Characteristics The Motorcycle#Motorcycle rider postures, riding position usually places the feet forward and the hands up, with the spine upright or leaning back slightly. Typical cruiser engines emphasize easy rideability and Gear shift, shifting, with plenty of low-end torque, but not necessarily large amounts of horsepower, and are traditionally V-twin engine, V-twins. However, Straight engine, inline engines have become more common. Cruisers with greater performance than usual, including more horsepower, stronger brakes and better suspension, are often called strong cruisers. Market share Japanese companies began producing models evocative of the early cruisers in the mid-1980s, and by 1997 the market had gro ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |