A tandem bicycle or twin is a form of bicycle designed to be ridden by more than one person. The term tandem refers to the seating arrangement, not the number of riders. Patents related to tandem bicycles date from the mid 1880s. Tandems can reach higher speeds than the same riders on single bicycles, and tandem bicycle racing exists. As with bicycles for single riders, there are many variations that have been developed over the years.
A tricycle, sometimes abbreviated to trike, is a human-powered three-wheeled vehicle.
The pedal is the part of a bicycle that the rider pushes with their foot to propel the vehicle. It provides the connection between the cyclist's foot or shoe and the crank allowing the leg to turn the bottom bracket spindle and propel the bicycle's wheels. A pedal usually consists of a spindle that threads into the end of the crank, and a body on which the foot rest is attached, that is free to rotate on bearings with respect to the spindle.
A touring bicycle is a bicycle designed or modified to handle bicycle touring. To make the bikes sufficiently robust, comfortable and capable of carrying heavy loads, special features may include a long wheelbase, frame materials that favor flexibility over rigidity, heavy duty wheels, and multiple mounting points.
A utility bicycle, city bicycle, urban bicycle, European city bike (ECB), Dutch bike, classic bike or simply city-bike is a bicycle designed for frequent very short, relatively slow rides through very flat urban areas. It is a form of utility bicycle commonly seen around the world, built to facilitate everyday short-distance riding in normal clothes in cold-to-mild weather conditions. It is therefore a bicycle designed for very short-range practical transportation, as opposed to those primarily for recreation and competition, such as touring bicycles, road bicycles, and mountain bicycles. Utility bicycles are the most common form globally, and comprise the vast majority found in the developing world. City bikes may be individually owned or operated as part of a public bike sharing scheme.
The Birdy is a folding bicycle designed by Riese und Müller in Germany and produced by Pacific Cycles in Taiwan. As of 2010 over 100,000 had been sold. Three distinct models have been marketed, in addition to some specialist variations, with the third (Mk3) introduced in July 2015.
In the market, there is a wide variety of types of motorcycles, each with unique characteristics and features. Models vary according to the specific needs of each user, such as standard, cruiser, touring, sports, off-road, dual-purpose, scooters, etc. Often, some types like sport touring are considered as an additional category or integrated with touring.
Brompton Bicycle Limited, trading as Brompton, is a British manufacturer of folding bicycles based in Greenford, London.
An electric bicycle, e-bike, electrically assisted pedal cycles, or electrically power assisted cycles is a motorized bicycle with an integrated electric motor used to assist propulsion. Many kinds of e-bikes are available worldwide, but they generally fall into two broad categories: bikes that assist the rider's pedal-power and bikes that add a throttle, integrating moped-style functionality. Both retain the ability to be pedaled by the rider and are therefore not electric motorcycles. E-bikes use rechargeable batteries and typically are motor-powered up to 25 to 32 km/h. High-powered varieties can often travel more than 45 km/h (28 mph).
Bicycle and motorcycle dynamics is the science of the motion of bicycles and motorcycles and their components, due to the forces acting on them. Dynamics falls under a branch of physics known as classical mechanics. Bike motions of interest include balancing, steering, braking, accelerating, suspension activation, and vibration. The study of these motions began in the late 19th century and continues today.
The A-bike is a folding bicycle released by Sir Clive Sinclair in the United Kingdom on 12 July 2006. It was designed by Hong Kong design agency Daka, in collaboration with Sinclair Research, over a 5-year period. It was announced to the public in 2004. Clive Sinclair envisioned the A-bike, and Alex Kalogroulis was the main designer. It weighs 5.7 kilograms (13 lb) and folds to 67×30×16 centimetres (26.4×11.8×6.3 in), small enough to fit in a rucksack. The first version had 6-inch (15 cm) wheels, which was increased to 8 inches (20 cm) in later models. In 2015, an electric version, the A-Bike Electric, was introduced to the public as part of a Kickstarter campaign.
A motorized scooter is a stand-up scooter powered by either a small internal combustion engine or electric hub motor in its front and/or rear wheel. Classified as a form of micro-mobility, they are generally designed with a large center deck on which the rider stands. The first motorized scooter was manufactured by Autoped in 1915.
Strida is a portable belt-driven folding bicycle with a distinctive A-shaped collapsible frame, designed by British engineer and designer Mark Sanders. The first model, Strida 1, was released in 1987 and the latest, Strida 5.2, in 2009.
The Mini125 is a design of portable bicycle. The current production features four models that have the same frame design but different wheels. The standard model weighs 5.9 kg, folds into a 73 cm × 36 cm × 22 cm package and has polyurethane wheels of diameter 125 mm or 110 mm. The gear assembly is typical of city bikes, while the transmission uses a minimoto chain and pinion. Mini125 is marketed under the MDEbikes brand and was released and presented at the 2003 Handmade Bicycle Show of Tokyo. The bike is designed and developed by Giuseppe and Paolo Ganio of Turin, Italy.
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. Bicycle suspension is used primarily on mountain bikes, but is also common on hybrid bicycles.
The Bickerton, also called the Bickerton Portable, was a portable aluminium folding bicycle designed by Harry Bickerton and manufactured in the UK and Australia between 1971 and 1989. Bickerton, an accomplished engineer, suffered a three-year driving ban for drink-driving in 1970 following a car crash, and invented the bike for himself, to be carried onto public transport or stored in the trunk of a car as small as an Austin Mini.
Small-wheel bicycles are adult bicycles that have wheels of 510 mm (20 in) nominal diameter or less, which is smaller than the 700c (522 mm), 660, 700, 740 mm (26, 27.5, 29 in) sizes common on most full-sized adult bikes. While many folding bicycles are small-wheel bicycles, not all small-wheel bicycles can fold. Some small-wheel bicycles neither fold nor separate, such as the Moulton, which comes in both fixed-frame and separable-frame versions. While BMX bikes also have 510 mm (20 in) wheels, they are not normally categorised as "small-wheel bikes".
A folding bicycle is a bicycle designed to fold into a compact form, facilitating transport and storage. When folded, the bikes can be more easily carried into buildings, on public transportation, and more easily stored in compact living quarters or aboard a car, boat or plane.
The City Mantis Electric Scooter is a personal transporter developed by City Mantis USA. It is not clear when the City Mantis was first launched but its earliest appearance comes from a Cycle Show at the Business Design Centre in 2002. The original City Mantis model was known for its unique fold-up feature and was marketed for being conveniently stored or carried away after use. According to the official website, the City Mantis was voted "most innovative new product of 2003" at the time of its release.
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