Cycling Science: How Rider and Machine Work Together by Max Glaskin

By Max Glaskin

Every July thousands flock to the Champs-Élysées in Paris—and hundreds of thousands extra to their televisions and computers—to witness the dramatic end of the grueling 3 weeks of the journey de France. there's no larger degree of the global love of the bicycle. yet of the 1.2 billion cyclists traversing the world’s roadways and trails, few folks make the effort to contemplate the technological know-how at the back of the game. the straightforward technique of getting approximately on wheels brings us involved with a wealth of interesting technological know-how, and right here journalist Max Glaskin investigates the clinical wonders that continue cyclists of their saddles.
Cycling Science excursions readers via a large choice of subject matters, from tire rolling resistance and the variation among yield energy and supreme energy, to the significance of aerodynamics and the influence that shaved legs have on velocity. every one bankruptcy explores a distinct subject—fundamentals, energy and balance, fabrics, energy, aerodynamics, and the human factor—and is geared up round a sequence of questions: what's the excellent body form? what's the greatest resource of drag? What retains a bicycle from falling over? How a lot energy can a bicycle owner produce? Which muscle mass does biking use? each one query is tested through explanatory diagrams and illustrations, and the ebook can be utilized to go looking for specific themes, or learn via for a complete review of ways laptop and rider paintings together.
Athletes have a lot to realize from realizing the technology in their activities, and Cycling technology will be a must-read for cyclists of all stripes—professionals, leisure riders, and an individual trying to increase their delight in cycling.

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G Up, up, and away As he was preparing for a world hour Pumping molecules Gas both impedes and facilitates cycling. Felt as a headwind, air is a gas that gets in the way, but without it cyclists would suffocate. 1 ft3 (3 liters) of air. Roughly half of this is trapped inside the hollow frame tubes, forks, stays, and handlebars, with the other half inside the tires. There is a specific relationship between pressure, volume, and temperature for any gas, and this is demonstrated every time you inflate a tire.

Bickertons used aluminum long before it became generally popular for bike frames; another folder, a prototype called the Switch, uses carbon fiber; the Strida and the Brompton have fewer tubes—all in the pursuit of lower weight. Another key issue is the ease of folding and unfolding. The solutions are diverse and the best are protected fiercely with patents. An alternative to folding is separable frames. Modern separables such as Moultons have small-diameter triangulated tubing to keep weight down, and suspension to ride as smoothly as full-sized wheels.

Lab tests show that steel is about three times stiffer than aluminum, so it would seem logical that a piece of aluminum needs to be three times thicker than an identical steel piece to be equally rigid. However, cylinders are not flat pieces of metal, and their mechanical properties provide an important benefit. When the diameter of a hollow cylinder is increased, its stiffness increases in proportion to the third power of the diameter. In other words, when the diameter is doubled, stiffness increases eight-fold (23).

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