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They can be used individually, as an external derailleur or an internal hub gear, or in combinations such as the SRAM Dual Drive, which uses a standard 8 or 9-speed cassette mounted on a three-speed internally geared hub, offering a similar gear range as a bicycle with a cassette and triple chainrings. Derailleur gears. Cogset; Crankset; Hub gear
Schwinn AeroCycle in Longmont Museum & Cultural Center 1950s Huffy Radio Bicycle Schwinn advertisement from 1946. A cruiser bicycle, also known as a beach cruiser or (formerly) motobike, is a bicycle that usually combines balloon tires, an upright seating posture, a single-speed drivetrain, and straightforward steel construction with expressive styling.
A twist-style 14-speed indexed shifter made by Rohloff. A bicycle shifter or gear control or gear levers is a component used to control the gearing mechanisms and select the desired gear ratio. Typically, they operate either a derailleur mechanism or an internal hub gear mechanism. In either case, the control is operated by moving a cable that ...
[6] [7] For the Aerocycle, F. W. Schwinn persuaded American Rubber Co. to make 2.125-inch-wide (54.0 mm) balloon tires, while adding streamlined fenders, an imitation "gas tank", a streamlined, chrome-plated headlight, and a push-button bicycle bell. [6] [8] The bicycle would eventually come to be known as a paperboy bike or cruiser.
Shimano STI Dual Control shifter and brake lever: 1. Main lever 2. Release lever A. Pulling the main lever towards the rider applies the brake B. Pushing the main lever towards the center of the bike downshifts one, two or three gears depending on how far the lever is pushed (right hand shifter) or changes from a small chainring to a larger chainring (left hand shifter)
The Dutch omafiets is a ladies' roadster of classic design. The ladies' version of the roadster's design was very much in place by the 1890s. It had a step-through frame rather than the diamond frame of the gentlemen's model so that ladies, with their dresses and skirts, could easily mount and ride their bicycles, and commonly came with a skirt guard to prevent skirts and dresses becoming ...
The first commercially successful electronic gear shift system for road bicycles was introduced by Shimano in 2009, the Di2. [3] Three professional teams used the Di2 in the 2009 Tour of California: Columbia High Road, Garmin Slipstream, and Rabobank; [3] and several teams and riders, including George Hincapie, used it during the 2009 Tour de ...
The NuVinci CVT system has a small number of parts. [5] [6] Most CVTs have lower mechanical efficiency than competitive conventional transmissions.Since any CVT may allow a power plant, human or motorized, to operate at (or closer to) its speed of optimal efficiency, output torque or output power, the NuVinci CVT may improve a system's overall efficiency or performance compared to a ...