Bicycle Quarterly
Encyclopedia
Bicycle Quarterly is a magazine that examines the history of bicycle
Bicycle
A bicycle, also known as a bike, pushbike or cycle, is a human-powered, pedal-driven, 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 bicyclist....

s, their design, and evolution; with emphasis on Randonneuring
Randonneuring
Randonneuring is a long-distance cycling sport with its origins in audax cycling. In randonneuring, riders attempt courses of 200 km or more, passing through predetermined "controls" every few tens of kilometers...

 bicycles. Articles evaluate equipment and bicycles for performance
Bicycle performance
A bicycle's performance, in both biological and mechanical terms, is extraordinarily efficient. In terms of the amount of energy a person must expend to travel a given distance, investigators have calculated it to be the most efficient self-powered means of transportation...

 and function, and articles include footnotes. It is published and edited by Jan Heine, of Seattle, Washington in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. According to the group, "Randonneurs USA," Bicycle Quarterly is "a publication dedicated to classic lightweight bikes, particularly French ones such as Alex Singer and Rene Herse." In a 2009 article in Bicycle Times, Marie Autrey described Bicycle Quarterly as "Part anthropology journal, part engineering text."

Highlights

In Vol. 5, No. 1, Bicycle Quarterly published an article which dealt with the results of rolling resistance
Rolling resistance
Rolling resistance, sometimes called rolling friction or rolling drag, is the resistance that occurs when a round object such as a ball or tire rolls on a flat surface, in steady velocity straight line motion. It is caused mainly by the deformation of the object, the deformation of the surface, or...

 tests performed on various tire
Bicycle tire
A bicycle tire is a tire that fits on the wheel of a bicycle, unicycle, tricycle, quadracycle, bicycle trailer, or trailer bike. They may also be used on wheelchairs and handcycles, especially for racing...

s. The results surprised many, including Lennard Zinn who published comments on the article in Velo News including, "Notable is that rolling resistance is only a weak function of tire width." Heine also summarized information about bicycle tires from various articles of Bicycle Quarterly in an article published in Adventure Cyclist
Adventure Cycling Association
The Adventure Cycling Association is a national cycling association in the United States which provides services for cycle-tourists, publishes maps and campaigns for better cycling facilities. Its headquarters are in Missoula, Montana...

 in March, 2009.

In the third edition of his book, The Dancing Chain , Frank Berto discusses test results from Bicycle Quarterly articles in evaluating approximately twenty derailleurs
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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