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Bicycle and motorcycle geometry is the collection of key measurements (lengths and angles) that define a particular bike configuration. Primary among these are wheelbase, steering axis angle, fork offset, and trail. These parameters have a major influence on how a bike handles. [1]
A bicycle, also called a pedal cycle, bike, push-bike or cycle, is a human-powered or motor-assisted, pedal-driven, single-track vehicle, with two wheels attached to a frame, one behind the other. A bicycle rider is called a cyclist, or bicyclist. Bicycles were introduced in the 19th century in Europe. By the early 21st century there were more ...
A modern industrial knitting machine in action industrial circular knitting fabric machines A knitting machine is a device used to create knitted fabrics in a semi or fully automated fashion. There are numerous types of knitting machines, ranging from simple spool or board templates with no moving parts to highly complex mechanisms controlled ...
BMC Switzerland AG (abbreviation of "Bicycle Manufacturing Company") is a Swiss bicycle and cycling product manufacturer based in Grenchen. [1] BMC designs, builds and distributes road bikes, mountain bikes, and commuter bikes primarily for sale to dealers in North America, Europe, South Africa, Australia, East Asia and the United Arab Emirates.
A motorcycle (motorbike, bike, or, if three-wheeled, a trike) is a two or three-wheeled motor vehicle steered by a handlebar from a saddle-style seat. [ 1 ] [ 2 ] [ 3 ] Motorcycle designs vary greatly to suit a range of different purposes: long-distance travel, commuting , cruising , sport (including racing ), and off-road riding.
From a mechanical viewpoint, up to 99% of the mechanical energy delivered by the rider into the pedals is transmitted to the wheels (clean, lubricated new chain at 400 W), although the use of gearing mechanisms reduces this by 1–7% (clean, well-lubricated derailleurs and a straight chainline), 4–12% (chain with 3-speed hubs), or 10–20% (shaft drive with 3-speed hubs).
A chain drive and rear derailleur gear change, the most popular system in use today A shaft-drive with crankset and rear gear hub. Bicycle drivetrain systems are used to transmit power on bicycles, tricycles, quadracycles, unicycles, or other human-powered vehicles from the riders to the drive wheels.
The components, including bike’s frame, wheels, handlebars and saddle, [3] consist of sheets of cardboard folded and glued together. [1] The complete bike weighs 20 pounds (9.1 kg), [2] and is treated to be fireproof and waterproof. [1] Gafni reports that it can support riders up to 220 kilograms (490 lb). [10]