(PhysOrg.com) -- Hungarian bicycle designers have unveiled their new Stringbike in Padova, Italy. The design replaces the traditional chain with a symmetrical rope and pulley system, which they say is more efficient, makes ...
(PhysOrg.com) -- Bicycle owners are being offered a no-hassle solution to keeping their bicycle tires sidewalk and road-worthy. The solution is called the PumpTire, billed as the world’s first self-inflating bicycle ...
Copenhagen, one of the world's most bicycle-friendly cities, has begun turning its extensive network of cycle paths into bike highways in an effort to push more commuters to leave their cars at home.
Environment
Nov 28, 2010
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1
(PhysOrg.com)—In a discovery that could lead to better and safer bicycle design, researchers have shown that long-accepted "gyro" and "caster" effects are not needed to make a bike balance itself. In fact, it's a mixture ...
Engineering
Apr 14, 2011
3
1
First-of-its-kind research from the Accessibility Observatory at the University of Minnesota ranks the 50 largest (by population) metropolitan areas in the United States for connecting workers with jobs via bicycle.
Energy & Green Tech
Jul 25, 2019
2
15
Is it a bike? Is it a plane?
Engineering
Jun 12, 2013
23
0
(Phys.org) —Some observers are calling it "the photosynthesis bike." The bike of interest is only a concept, not even a prototype yet, from designers in Bangkok. Nonetheless, in concept alone, it has captured a lot if imaginations, ...
The optimum design of bicycle parameters has been explored by many scholars and institutes since bicycles were first invented. Professor Xin-Jun Liu and his group at Tsinghua University established a new way to design bicycle ...
Engineering
Mar 3, 2012
0
0
(PhysOrg.com) -- Cycle helmets are available in a wide range of types, including foldable models, models fitted with a flashing rear light or featuring an iPhone display. In future, they will start to smell distinctively ...
Engineering
Jun 2, 2010
0
0
Claiming to have developed "the most energy dense power solution for electric bicycles," SiGNa Chemistry, Inc., is hoping to greatly improve not only electric bicycles, but many other electric applications. The New York City-based ...
A bicycle, bike, or cycle is a pedal-driven, human-powered vehicle with two wheels attached to a frame, one behind the other. A person who rides a bicycle is called a cyclist or a bicyclist.
Bicycles were introduced in the 19th century and now number about one billion worldwide, twice as many as automobiles. They are the principal means of transportation in many regions. They also provide a popular form of recreation, and have been adapted for such uses as children's toys, adult fitness, military and police applications, courier services, and competitive sports.
The basic shape and configuration of a typical bicycle has changed little since the first chain-driven model was developed around 1885. Many details have been improved, especially since the advent of modern materials and computer-aided design. These have allowed for a proliferation of specialized designs for particular types of cycling.
The invention of the bicycle has had an enormous impact on society, both in terms of culture and of advancing modern industrial usage. Several components that eventually played a key role in the development of the automobile were originally invented for the bicycle - e.g., ball bearings, pneumatic tires, chain-driven sprockets, spoke-tensioned wheels, etc.
This text uses material from Wikipedia, licensed under CC BY-SA
