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In the days of quill stems, a road stem was clearly identifiable from its "number 7" shape, but nowadays it can be hard to tell the difference between a "road" (26.0 mm) and "MTB" (25.4 mm) stem. Manufacturers frequently omit the clamp size from advertising or packaging. BMX bikes usually have a 22.2 mm diameter clamp size.
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]
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".
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 ...
The helmets are tested, seven for each model, using 32 tests, which aim to measure the protection they offer the brain in impacts at a variety of speeds, and against both flat surfaces and kerbs. [2] It rates the helmet models from one to five stars - with five being the highest, [ 1 ] and states that a five star rated helmet "offers good ...
2020 full suspension mountain bike with a four-bar linkage rear suspension. A rigid 2002 Trek 800 Sport mountain bike An elastomer suspension stem. Bicycle suspension is the system, or systems, used to suspend the rider and bicycle in order to insulate them from the roughness of the terrain.
A mountain bike with 29″ wheels is often referred to as a 29er, and a bike with 27.5-inch wheels is called a 27.5 Mountain bike or as a marketing term ″650B bike". [ 27 ] Wheels come in a variety of widths, ranging from standard rims suitable for use with tires in the 1.90 to 2.10 in (48 to 53 mm ) size, to 2.35 and 3.00 in (60 and 76 mm ...
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.