Search results
Results From The WOW.Com Content Network
Quill stem classic single-piece type Threadless stem shown with cable hole. The stem is the component on a bicycle that connects the handlebars to the steerer tube of the bicycle fork. Sometimes called a goose neck, [1] a stem's design belongs to either a quill or threadless system, and each system is compatible with respective headset and fork ...
EN 1078, entitled Helmets for pedal cyclists and for users of skateboards and roller skates, is a European standard published in 1997. It is the basis of the identical British Standard BS EN 1078:1997. [1]
The star nut may be replaced by a self expanding wedge in some designs. The bolt compresses the stem down onto spacers, usually aluminum, which in turn compress the headset bearing cups. The preload bolt does not hold the fork onto the bike; after the preload is set, the stem bolts must be tightened to secure the fork in place.
Softride suspension bicycle Softride suspension bicycle stem. Softride was a manufacturer of bicycles located in Bellingham, Washington. They specialized in bicycles for triathletes. The bicycle frames were distinctive for their lack of seat tubes and seat stays. The idea was to reduce aerodynamic drag and improve ride comfort.
Bell moved to Long Beach, California in 1968. The first Bell helmet with full-face protection was developed at this location. [7] In 1980, the company merged with football helmet maker Riddell to form "Bell-Riddell". The Bell-Riddell motorcycle division was sold in 1991, becoming "Bell Helmets". The remaining company was renamed "Bell Sports".
The length of the fork is usually measured parallel to the steerer tube from the bottom of the lower bearing race to the center of the front wheel axle. [3] A 1996 survey of 13 700c road forks found a maximum length of 374.7 mm and a minimum of 363.5 mm. [citation needed]
The U.S. Consumer Product Safety Commission (CPSC) has warned that children should not wear bike helmets while using playground equipment, or any time when they are not biking, because of the risk of strangulation by the helmet strap should the helmet or strap be caught in playground equipment, a tree being climbed, and so on. [48]
Mountain biking (abbr. MTB) is a sport of riding bicycles off-road, often over rough terrain, usually using specially designed mountain bikes.Mountain bikes share similarities with other bikes but incorporate features designed to enhance durability and performance in rough terrain, such as air or coil-sprung shocks used as suspension, larger and wider wheels and tires, stronger frame materials ...