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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 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 app. [ 13 ]
ButterflyMX was founded in 2014 in New York City by Cyrus Claffey, Matthew Knoff, Kunal Shah, and Ivan Mihalj to address difficulties in traditionally wired intercom usage, installation, and administration.
The Shimano FFS (Front Freewheel System) circa 1980 was the most widespread such system. Chain-drive systems such as the derailleur systems work best if the chain is aligned with the sprocket plane, especially avoiding the biggest drive sprocket running with the biggest driven sprocket (or the smallest with the smallest).
The product line of Clear-Com has expanded beyond party-line wired units to include multi-channel intercoms and wireless technology. Clear-Com patented a multi-channel wired digital intercom system in 2009, used in the HelixNet product line. The company's FreeSpeak wireless intercom was nominated in 2020 for a TEC Award. [7]
In 1994, the System 1300 intercom was designed for Aircraft Rescue and Firefighting vehicles (ARFF) that had the first ever split audio function available on the market. The System 1300 intercom went on to become the industry standard for U.S. airports to have on their trucks because of the practicality and safety factors. In 2000, the System ...