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Bottom bracket

Index Bottom bracket

The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the crankset to rotate freely. [1]

32 relations: Ashtabula (disambiguation), Axle, Bearing (mechanical), Bicycle, Bicycle frame, Bicycle pedal, BMX, British Standards, Campagnolo, Cannondale Bicycle Corporation, Cotter (pin), Crankset, Derailleur gears, Downhill mountain biking, Eccentric (mechanism), Fixed-gear bicycle, Fork end, Hirth joint, Hub gear, International Organization for Standardization, Japanese Industrial Standards, Lugged steel frame construction, Open standard, Precession (mechanical), Q factor (bicycles), Set screw, Sheldon Brown (bicycle mechanic), Shimano, Single-speed bicycle, Spindle (tool), Spline (mechanical), Tandem bicycle.

Ashtabula (disambiguation)

Ashtabula is a city in Ohio.

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An axle is a central shaft for a rotating wheel or gear.

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Bearing (mechanical)

A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts.

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A bicycle, also called a cycle or bike, is a human-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other.

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Bicycle frame

A bicycle frame is the main component of a bicycle, onto which wheels and other components are fitted.

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Bicycle pedal

The bicycle pedal is the part of a bicycle that the rider pushes with their foot to propel the bicycle.

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BMX, an abbreviation for bicycle motocross or bike motocross, is a cycle sport performed on BMX bikes, either in competitive BMX racing or freestyle BMX, or else in general on- or off-road recreation.

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British Standards

British Standards (BS) are the standards produced by the BSI Group which is incorporated under a Royal Charter (and which is formally designated as the National Standards Body (NSB) for the UK).

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Campagnolo is an Italian manufacturer of bicycle components with headquarters in Vicenza, Italy.

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Cannondale Bicycle Corporation

The Cannondale Bicycle Corporation is an American division of Canadian conglomerate Dorel Industries that supplies bicycles.

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Cotter (pin)

A cotter is a pin or wedge passing through a hole to fix parts tightly together.

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The crankset (in the US) or chainset (in the UK), is the component of a bicycle drivetrain that converts the reciprocating motion of the rider's legs into rotational motion used to drive the chain or belt, which in turn drives the rear wheel.

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Derailleur gears

Derailleur gears are a variable-ratio transmission system commonly used on bicycles, consisting of a chain, multiple sprockets of different sizes, and a mechanism to move the chain from one sprocket to another.

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Downhill mountain biking

Downhill mountain biking (DH) is a genre of mountain biking practiced on steep, rough terrain that often features jumps, drops, rock gardens and other obstacles.

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Eccentric (mechanism)

In mechanical engineering, an eccentric is a circular disk (eccentric sheave) solidly fixed to a rotating axle with its centre offset from that of the axle (hence the word "eccentric", out of the centre).

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Fixed-gear bicycle

A fixed-gear bicycle (or fixed-wheel bicycle, commonly known in some places as a fixie) is a bicycle that has a drivetrain with no freewheel mechanism.

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Fork end

A fork end, fork-end, or forkend is a slot in a bicycle frame or bicycle fork where the axle of a bicycle wheel is attached.

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Hirth joint

A Hirth joint or Hirth coupling is a type of mechanical connection named after its developer Albert Hirth.

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Hub gear

A hub gear, internal-gear hub, or just gear hub is a gear ratio changing system commonly used on bicycles that is implemented with planetary or epicyclic gears.

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International Organization for Standardization

The International Organization for Standardization (ISO) is an international standard-setting body composed of representatives from various national standards organizations.

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Japanese Industrial Standards

specifies the standards used for industrial activities in Japan.

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Lugged steel frame construction

Lugged steel frame construction is a method of building bicycle frames using steel tubing mated with socket-like sleeves, called lugs.

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Open standard

An open standard is a standard that is publicly available and has various rights to use associated with it, and may also have various properties of how it was designed (e.g. open process).

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Precession (mechanical)

Precession, also called epicyclic fretting precession, (or more accurately hypocyclic fretting precession since "epicyclic" applies to a round part spinning outside a circle and "hypocyclic" applies to a round part spinning inside a circle) is the process of a round part in a round hole rotating with respect to that hole because of clearance between them and a radial force on the part that changes direction.

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Q factor (bicycles)

The Q Factor of a bicycle is the distance between the pedal attachment points on the crank arms, when measured parallel to the bottom bracket axle.

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Set screw

A set screw is a type of screw generally used to secure an object within or against another object, normally not using a nut (see bolts compared with screws).

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Sheldon Brown (bicycle mechanic)

Sheldon Brown (July 14, 1944 – February 4, 2008) was an American bicycle mechanic, technical expert and author.

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is a Japanese multinational manufacturer of cycling components, fishing tackle, and rowing equipment.

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Single-speed bicycle

A single-speed bicycle is a type of bicycle with a single gear ratio.

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Spindle (tool)

In machine tools, a spindle is a rotating axis of the machine, which often has a shaft at its heart.

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Spline (mechanical)

Splines are ridges or teeth on a drive shaft that mesh with grooves in a mating piece and transfer torque to it, maintaining the angular correspondence between them.

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Tandem bicycle

The tandem bicycle or twin is a form of bicycle (occasionally a tricycle) designed to be ridden by more than one person.

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Bottom bracket shell, Cartridge bearing, ISIS Drive, ISIS drive, Octalink, Square taper.


[1] https://en.wikipedia.org/wiki/Bottom_bracket

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