FACTOID # 16: In the 2000 Presidential Election, Texas gave Ralph Nader the 3rd highest popular vote count of any US state.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Bicycle chain
Roller chain and sprocket
Roller chain and sprocket

A bicycle chain is a chain that transfers power from the pedals to the drive-wheel of a bicycle thus propelling it. Image File history File links Chain. ... Roller chain and sprocket Roller chain or bush roller chain is the type of chain most commonly used for transmission of mechanical power on bicycles, motorcycles, and in industrial and agricultural machinery. ... In physics, power (symbol: P) is the rate at which work is performed or energy is transferred. ... A bicycle pedal provides the connection between the cyclists foot or shoe and the crankarm allowing the leg to be used to turn the crank. ... The force bearing on the axle has an eccentricity e with the point of contact to the rolling surface and exerts a moment about the contact point A wheel is a circular device capable of rotating on its axis, facilitating movement or transportation or performing labour in machines. ... “Velo” redirects here. ...


The chain in use on modern bicycles is a roller chain with a 1/2" pitch. Chain comes in either 1/8" or 3/32" widths. 1/8" is used on the common low cost coaster, three speed, fixed gear and track bicycles, and 3/32" is used on derailleur-equipped road bicycles such as racing and touring models. Roller chain and sprocket Roller chain or bush roller chain is the type of chain most commonly used for transmission of mechanical power on bicycles, motorcycles, and in industrial and agricultural machinery. ... An inch (plural: inches; symbol or abbreviation: in or, sometimes, ″ - a double prime) is the name of a unit of length in a number of different systems, including English units, Imperial units, and United States customary units. ... A fixed gear bicycle A fixed-gear bicycle, also known as a fixie, is a single speed bicycle without a freewheel. ... Mountain bicycle with Derailleur gears 9x multiple sprockets of a Derailleur gear Derailleur gears are a gear system commonly used on bicycles, consisting of a chain, multiple sprockets and a mechanism to move the chain from one sprocket to another. ... A road bicycle is a bicycle designed for use on roads, as opposed to rough terrain. ... An aluminum racing bicycle made by Raleigh and built using Shimano components. ... A touring bicycle is a road bicycle designed for long-distance travel, and especially bicycle touring. ...

Italic textLink title==History==


Obsolete chain fuck off designs previously used on bicycles included the block chain, the skip-link chain, and the Simpson lever chain. Virtually all modern chains are of the "Sedis" bushingless design, which is cheaper to make, promotes better lubricant flow inside the rollers, and has more lateral flexibility for multi-geared bicycles. The Simpson Chain or Simpson Lever Chain was an English-made bicycle chain invented by William Spears Simpson in 1895. ...


Before the safety bicycle, bicycles did not have chains and the pedals were attached directly to the drive-wheel, thus limiting top speed by the diameter of the wheel and resulting in very dangerous designs with front wheels as large as possible. Using chain drive allowed the mechanical advantage between the drive and driven sprockets to determine the maximum speed, thereby enabling manufacturers to reduce the size of the driving wheel for safety. It also allowed for the development of variable gearing, allowing cyclists to adjust their gearing to the difficulty of the terrain, on the fly.Insert non-formatted text hereInsert non-formatted text hereInsert non-formatted text here--203.164.228.212 09:21, 15 April 2007 (UTC)--203.164.228.212 09:21, 15 April 2007 (UTC)#REDIRECT Insert textStrike-through text The safety bicycle is a type of bicycle that became very popular beginning in the late 1880s. ... In physics and engineering, mechanical advantage (MA) is the factor by which a mechanism multiplies the force put into it. ... Spur gears found on a piece of farm equipment A gear wheel is a wheel with teeth around its circumference, the purpose of the teeth being to mesh with similar teeth on another mechanical device -- possibly another gear wheel -- so that force can be transmitted between the two devices in... Bicycle gearing is concerned with the connection between the pedals and the rear wheel of a bicycle, and with the effect this connection has on how easy or hard it is to turn the pedals. ... Category: ...

Contents

Maintenance

Chain lubrication is a common problem for cyclists. Liquid lubricants penetrate to the inside of the links and are not easily displaced, but quickly attract dirt. "Dry" lubricants, often containing wax or Teflon, have poor penetrating qualities unless carried in an evaporating solvent, but stay cleaner in use. The cardinal rule for long chain life is never to lubricate a dirty chain, as this washes abrasive particles into the rollers. Chains should be cleaned before lubrication. An alternative approach is to change the (relatively cheap) chain very frequently, then proper care is less important. Some utility bicycles have fully-enclosing chaincases which virtually eliminate chain wear and maintenance. Lubrication occurs when opposing surfaces are completely separated by a lubricant film. ... candle wax This page is about the substance. ... Teflon is polytetrafluoroethylene (PTFE), a polymer of fluorinated ethylene. ... A solvent is a liquid that dissolves a solid, liquid, or gaseous solute, resulting in a solution. ... a Dutch utility bicycle A utility bicycle is one which is designed for a practical purpose, as opposed to sport bicycles which are designed for recreation and competition, such as touring bicycles, racing bicycles and mountain bicycles. ...


Wear

Chain wear, or chain stretch, becomes an issue with extensive cycling. Although the overall effect is often called "stretch", chains generally wear through attrition of the bushings (or half-bushings, in the Sedis design) and not by elongation of the sideplates. The tension created by pedaling is insufficient to cause the latter. Because an old chain is longer than needed, its links will not precisely fit the spaces between teeth in the drivetrain, making gear shifts a problem and possibly resulting in a 'skipping' chain that reduces power transfer and makes pedalling very uncomfortable. Tension is a reaction force applied by a stretched string (rope or a similar object) on the objects which stretch it. ... Drivetrain is the twelfth studio album by southern rock band . ...


Twenty half-links in a new chain measure 254.0 mm, and replacement is recommended before the old chain measures 256.0 mm (0.7% wear). A safer time to replace a chain is when 24 half-links in the old chain measure 121/16 inches (0.4% wear). If the chain has worn beyond this limit, the rear sprockets are also likely to wear, in extreme cases followed by the front chainrings. Replacing worn sprocket cassettes and chainrings after missing the chain replacement window is much more expensive. This article does not cite its references or sources. ...


Manufacturers

Bicycle chains are made by companies such as:

Campagnolo Ergopower lever Campagnolo is an Italian manufacturer of bicycle components with headquarters in Vicenza, Italy, historically regarded as the most prestigious brand name. ... Internal Schematic of a Rohloff Speedhub 500/14 The Rohloff AG is a German company from Fuldatal near to Kassel. ... Kmc and KMC is may refer to: Kia Motors Company Kasturba Medical College, Mangalore Kasturba Medical College, Manipal Kyoto university Microcomputer Club Khyber Medical College Kaiserslautern Military Community This page concerning a three-letter acronym or abbreviation is a disambiguation page — a navigational aid which lists other pages that might... Shimano, Inc. ... SRAM Corporation is a bicycle component manufacturer based in Chicago, Illinois, incorporating the former bicycle division of Fichtel and Sachs, Sachs-Huret and recently acquiring Rock Shox, Avid and Truvativ, making it much more competitive against the industry giant Shimano. ...

See also

Bicycle gearing is concerned with the connection between the pedals and the rear wheel of a bicycle, and with the effect this connection has on how easy or hard it is to turn the pedals. ... A chain tool is a small mechanical device used to break a bicycle chain in such a way that it could be mended with the same tool. ...

External links


  Results from FactBites:
 
Bicycle chain - Wikipedia, the free encyclopedia (444 words)
A bicycle chain is a chain that transfers power from the pedals to the drive-wheel of a bicycle thus propelling it.
The chain in use on modern bicycles is a roller chain with a 1/2" pitch.
Before the safety bicycle, bicycles did not have chains and the pedals were attached directly to the drive-wheel, thus limiting top speed by the diameter of the wheel and resulting in very dangerous designs with front wheels as large as possible.
  More results at FactBites »

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m