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Rolling resistance

: Practitioners of motorized sports recognized the traction benefits of slick tires a long time ago.

Tires and wheels for timed cycling events

: If the frame of a bicycle represents the “heart” of a bicycle, it can be argued that wheels and tires represent the “soul”.

Yet more wheel size debates

: After two decades of heated declarations and ill-informed pronouncements, there remains not one shred of evidence suggesting one of these wheel sizes is inherently superior to the other. And yet...

What science says of seat angles

: There have been real studies performed by real scientists on the subject of seat angles.

The Physics of Moving a Bike

: How power propels a bike: This is the second of two introductory articles preparing for a year-long series on training with power.

X/Y Rules for cycling: After the "peer review"

: The nice thing about the Internet -- or the maddening thing, if you like finality -- is that there rarely is any finality. Articles that we publish are not the last word on a subject, they're ...

X/Y Rules in an Angular World

: In barely a month USA Cycling joins the UCI in legislating the Randy Newman ethic: "Don't want no short people round here." Fortunately, there is a deceptively easy alternative for both of cycling's ...

The Aerodynamics of hand height

: Floyd Landis, Fabian Cancellara, Dave Zabriskie, Levi Leipheimer have all raced with the "hands in face" position. John Cobb pulls out of his wind tunnel archives an analysis of hand heights.

Trek's wind tunnel white paper

: Trek's engineers went public with their latest Equinox TTX wind tunnel test to counteract what it called spotty and erroneous assumptions about its recent data.