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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. Most also include some type of a mechanism to convert speed and torque via gear ratios .
A person pedalling with 100 W power can achieve 5.5 m/s on a roadster, 7.5 m/s on a racing bicycle, 10 m/s with a faired HPV and 14 m/s with an ultimate HPV. [9] In competitive cycling a sustainable high speed is augmented by the use of light materials, low-resistance tires, aerodynamic design, and the aerodynamic effects of the peloton. The ...
The Easytronic is generally used in smaller modern front-wheel drive cars, including the Corsa 1.0 & 1.2 & 1.3D, Tigra 1.4 90 ps, Meriva 1.6 & 1.8, Astra 1.4 & 1.6, Zafira 1.8 140 ps and Vectra/Signum 1.8 140 ps. The Easytronic transmission is manufactured for Adam Opel AG by ZF Friedrichshafen AG. [1]
The Getrag F20 5-speed manual transmission was fitted to many vehicles in the European General Motors production line up including for the UK the Vauxhall Astra DOHC 2.0i GTE 16 valve, Vauxhall Cavalier GSi 2000 16 valve DOHC and Vauxhall Calibra 2.0i 16 valve DOHC. [1] Everywhere else under the Opel brand name the Calibra, Vectra A, Astra F ...
[10] [11] A wireless system that can be retrofitted onto any bicycle was announced in 2016. [12] The front and rear derailleurs remain in place, while a wireless gear-change controller is added to the handlebar, with configuration of the system via an iOS/Android app, and customization can be added to the button controllers via the Bluetooth ...
The Ford–GM 10-speed automatic transmission is part of a joint venture between Ford Motor Company and General Motors to design and engineer two transmissions: a longitudinal 10-speed transmission and a transverse 9-speed trans-axle. Each company manufactures its own unique version of the transmissions in its own factories.
Single-speed mountain bike. A single-speed bicycle is a type of bicycle with a single gear ratio and a freewheel mechanism. These bicycles are without derailleur gears, hub gearing or other methods for varying the gear ratio of the bicycle. Adult single-speed bicycles typically have a gear ratio of between 55 and 75 gear inches, depending on ...
Patents for built-in systems to change gear ratios appeared as early as 1890. [8] [9] Adler offered a three-speed gearbox bicycle in the 1930s. [10]Several attempts to develop gearbox bicycles during the 2000s for downhill racing, such as the Honda RN-01 G-cross, incorporated complete derailleur gear drive trains in an enclosure.