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Monowheel
A monowheel, or uniwheel, is a one-wheeled single-track vehicle similar to a unicycle. Hand-cranked and pedal-powered monowheels were patented and built in the late 19th century; most built in the 20th and 21st century have been motorized. Some modern builders refer to these vehicles as monocycles, though that term is also sometimes used to describe motorized unicycles. The world speed record for a motorized monowheel is 98.464 km/h (61.18 mph). Stability Similar to bicycles, monowheels are stable in the direction of travel, but have limited horizontal stability. This is in contrast to unicycles which are unstable in both directions. Monowheels have also been found to have a lower speed required for stability when compared to unicycles. A monowheel remains upright due to gyroscopic effects, but its lack of stability makes it highly dependent on forward momentum and the balance of the rider, who must maintain stability while steering. Over the history of the mono ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RIOT Wheel
A RIOT wheel is a one-wheeled vehicle, or monowheel. Housing a motor and counterweight inside a giant wheel, the driver sits on a platform that extends out in front of the device. This is in contrast to the typical monowheels and their long history, where the rider sits ''inside'' the wheel. By moving the wheel's center of gravity forward, the wheel turns. Inside is a lead-weighted engine, which hangs by bearings off a stationary center shaft and uses its torque to move from 0 degrees vertical when stationary to 90 degrees forward at full blast, continually pulling itself forward around a sprocket bolted to the outer spokes. An independent counterweight system keeps the driver floating gently above ground out front, instead of inside the wheel, where most monowheel designs sequester him. Steering is handled by a gyro system and the driver's shifting weight. History Part-time programmer and Renaissance Fair jouster Jake Lyall had never worked for a garage, studied engineering, or e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monowheel Tractor
A monowheel tractor or monowheel-drive tractor is a light transport and agricultural vehicle that is driven and controlled by an engine and steering mechanism mounted on a single large wheel, with the load-carrying body trailing behind. Despite the name, they are tricycles. Development Monowheel tractors developed in two periods, both during times of rapid upheaval after warfare. Both types had quite different circumstances and goals. Small wheel tractors appeared after World War I, during a time of new opportunity. Large-wheel tractors appeared after World War II, during a period of austerity. Small wheel tractors The first monowheel tractors appeared in the 1920s, as a result of technical developments in small engine, small petrol engines. These had been driven by improving engine technology, particularly for motorbikes. Such engines now represented an affordable and portable power source. An entire powertrain could be constructed as a single monobloc unit, carried on a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Unicycle
An electric unicycle (often initialized as EUC or acronymized yuke or Uni) is a self-balancing personal transporter with a single wheel. The rider controls speed by leaning forwards or backwards, and steers by twisting or tilting the unit side to side. The self-balancing mechanism uses accelerometers, gyroscopes, and a magnetometer. In 2020, suspension models were introduced by three major manufacturers Begode, Kingsong and Inmotion. Operation Commercial units are self-balancing in a forward and backward direction, with side-to-side (lateral) stability being provided by the steering motions of the rider, similar to Bicycle and motorcycle dynamics. As of 2022, no commercial human-rideable unicycle has lateral self-balancing capabilities. However, a non-ridable, dual-axis self-balancing unicycle was demonstrated in 2012, with small, lightweight robots using a large weighted reaction wheel or control moment gyroscope. The control of a unicycle can be considered to be an inverte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyr Wheel
The Cyr wheel (also known as the roue Cyr, mono wheel, or simple wheel) is an acrobatic apparatus that consists of a single large ring made of aluminum or steel with a diameter approximately taller than the performer. The performer stands inside the Cyr wheel and grasps its rim, causing it to roll and spin gyroscopically while performing acrobatic moves in and around the rotating wheel. The apparatus and its movement vocabulary have some similarities with the German wheel, but while the German wheel consists of two large rings linked together by horizontal crossbars and has handles for the performer to hold onto, the modern Cyr wheel consists of a single ring and has no handles. The Cyr wheel takes its name from Daniel Cyr, who revived its popularity, utilising it as a circus apparatus at the end of the 20th century. Cyr wheel requires a solid, non-slippery surface such as a dance floor, concrete or stage and a relatively large performance area. Origin There are records of pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynasphere (vehicle)
The Dynasphere (sometimes misspelled Dynosphere) was a monowheel vehicle design patented in 1930 by John Archibald Purves FRSE (7 August 1870 – 4 November 1952) from Taunton, Somerset, UK. Purves' idea for the vehicle was inspired by a sketch made by Leonardo da Vinci. Detail Two prototypes were initially built: a smaller electrical model, and one with a gasoline motor that attained either 2.5 or 6 horse power depending on the source consulted, using a two-cylinder air-cooled Douglas engine with a three speed gear box, also providing reverse. The Dynasphere model reached top speeds of . The gasoline-powered prototype was high and built of iron latticework that weighed . The next generation version had ten outer hoops, covered with a leather lining, shaped to present a small profile to the ground. The driver's seat and the motor were part of one unit, mounted with wheels upon the interior rails of the outer hoop. The singular driving seat and motor unit, when powered for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kugelpanzer
The ''Kugelpanzer'' ("ball tank") is a one-man armoured vehicle built by Nazi Germany during World War II. The history of the vehicle is practically unknown other than the fact that at least one example was exported to the Empire of Japan and used by the Kwantung Army. The machine remains something of a mystery due to the lack of records and the incompleteness of the sole surviving model. Surviving example Only one example of the ''Kugelpanzer'' still exists today. It was captured by the Red Army in Manchuria and is on display in the collection of German armoured vehicles at the Kubinka Tank Museum in Moscow where it is described simply as "exhibit no. 37". There is no record of it ever having been used in combat. However, another report states that it was captured at the Kummersdorf proving grounds along with the infamous Panzer VIII Maus, ''Maus'' super-heavy tank. The vehicle was modified after its capture, repainted and its drive removed. In 2000 the original paintwork was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dicycle (vehicle)
A dicycle () (also known as a diwheel) is a vehicle with two parallel wheels, side by side, unlike single-track vehicles such as motorcycles and bicycles, which have two wheels inline. Originally used to refer to devices with large wheels and pedals, the term is now used in relation to powered self-balancing scooters with smaller wheels and no pedals such as the Segway PT and the self-balancing hoverboard. Etymology In more recent usage, "dicycle" has been used for both pedaled and motorised vehicles with wheels of varying sizes, as long as they share a common axis, though not necessarily a common axle. In 2017, the Merriam-Webster's dictionary, limited usage to 'velocipedes with two parallel wheels,' and the Oxford English Dictionary limited it to 'pedal-powered vehicles with large wheels placed parallel to each other'. Examples Segway PT The Segway PT is a two-wheeled self-balancing personal transporter which uses computers, sensors, and electric motors to keep the device up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Single-track Vehicle
A single-track vehicle is a vehicle that leaves a single ground track as it moves forward. Single-track vehicles usually have little or no lateral stability when stationary but develop it when moving forward or controlled. In the case of wheeled vehicles, the front and rear wheel usually follow slightly different paths when turning or when out of alignment. Single-track vehicles have unique dynamics that, in the case of wheeled vehicles, are discussed at length in bicycle and motorcycle dynamics, that usually require leaning into a turn, and that usually include countersteering. Single-track vehicles can roll on wheels, slide, float, or hydroplane. Wheeled *bicycle, tandem bicycle, tall bike, and recumbent bicycle *motorcycle, scooter, and feet forwards motorcycle * gyrocar and gyro monorail * kick scooter *unicycle, self-balancing unicycle, Uno (dicycle), and monowheel * inline skate and roller ski (when only one is in contact with the ground or when the second follows b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unicycle
A unicycle is a vehicle that touches the ground with only one wheel. The most common variation has a frame with a saddle, and has a pedal-driven direct-drive. A two speed hub is commercially available for faster unicycling. Unicycling is practiced professionally in circuses, by street performers, in festivals, and as a hobby. Unicycles have also been used to create new sports such as unicycle hockey. In recent years, unicycles have also been used in mountain unicycling, an activity similar to mountain biking or trials. History US patents for single-wheeled 'velocipedes' were published in 1869 by Frederick Myers and in 1881 by Battista Scuri. Unicycle design has developed since the Penny Farthing and later the advent of the first unicycle into many variations including: the seatless unicycle ("ultimate wheel") and the tall ("giraffe") unicycle. During the late 1980s some extreme sportsmen took an interest in the unicycle and modified unicycles to enable them to engage in o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unicycle
A unicycle is a vehicle that touches the ground with only one wheel. The most common variation has a frame with a saddle, and has a pedal-driven direct-drive. A two speed hub is commercially available for faster unicycling. Unicycling is practiced professionally in circuses, by street performers, in festivals, and as a hobby. Unicycles have also been used to create new sports such as unicycle hockey. In recent years, unicycles have also been used in mountain unicycling, an activity similar to mountain biking or trials. History US patents for single-wheeled 'velocipedes' were published in 1869 by Frederick Myers and in 1881 by Battista Scuri. Unicycle design has developed since the Penny Farthing and later the advent of the first unicycle into many variations including: the seatless unicycle ("ultimate wheel") and the tall ("giraffe") unicycle. During the late 1980s some extreme sportsmen took an interest in the unicycle and modified unicycles to enable them to engage in o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centreless Wheel
A centreless wheel is a wheel that lacks a centre or hub, instead being supported and driven at the rim. Design Centreless wheels are toroidal in shape and have one or multiple bearings along the rim. Propulsion can be achieved in different ways, such as with gear teeth along the inner surface of the rim. They can be made lighter than solid and spoked wheels, resulting in better handling and less rotational inertia. The lack of spokes or a traditional hub also allows for more space, which can be used to more easily package a hub motor. While Franco Sbarro was the first to replace vehicles' conventional wheels with hubless wheels in 1989, monowheels, which are similar in practice, predate Sbarro's hubless-wheel vehicles by more than 100 years. The research and development of centreless wheels has not been pursued by any large company due to their complexity, with their use limited to small companies and scientific analyses. Examples ''Tron: Legacy'' Light Cycle r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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