Two major bicycle component manufacturers have announced new designs for rear derailleurs that could improve the stability and functionality of bicycles. TEKTRO and Campagnolo are set to release rear derailleur models that boast superior construction, smart batteries, and wireless capabilities. Meanwhile, Shimano has filed a patent application for an integrated rear derailleur that could replace traditional hangers.
TEKTRO’s DirectMount Derailleur
TEKTRO has published a patent for a new DirectMount Derailleur design that promises to enhance the stability of bicycles and resistance to impact and shock. The design features a bushing, an adapter, and a fastener as separate components that work to make the derailleur more secure. Unlike SRAM’s T-Type Derailleur, it is possible to remove this DirectMount Derailleur from the bike frame without having to remove the rear wheel/axle. Furthermore, TRP’s DirectMount Derailleur is compatible with SRAM’s UDH dropout, which has already been adopted by many bike manufacturers.
Campagnolo’s wireless Super Record groupset
Campagnolo is set to launch its new wireless Super Record groupset with smart battery-powered derailleurs. The system eliminates thumb levers and instead employs smart batteries that are completely wireless. A communication device on each derailleur allows it to communicate with other bike equipment, or even with a smartphone for added convenience. The power supply unit can be easily attached and detached from the derailleurs for recharging or replacement purposes.
A movement detector is included in each derailleur to wake up the system after a period of inactivity. Setup assistance is provided via push button and light on the rear derailleur. Additionally, a colored light emitting pattern may indicate when a certain action is required.
Shimano’s integrated rear derailleur
Shimano is developing an integrated rear derailleur that could revolutionize drivetrain from bike manufacturers. The design eliminates the need for a derailleur hanger and clamps directly onto the rear dropout, held in place by the thru-axle. Patent application suggests Shimano following in the footsteps of SRAM’s direct-mount T-Type rear derailleur. The design uses a “coaxial” mounting system similar to B-gap screw, making for an initial setup process that is easy and quick.
The Shimano design is scalable to different cassette sizes, thanks to its adjustability via B-gap screw. The design features two arms that sandwich the rear dropout, similar to SRAM’s T-Type rear derailleur. Although Shimano’s DirectMount Rear Derailleur standard debuted in 2012, the latest patent shows the first design whereby the derailleur is mounted directly to the axle/dropout. While Shimano’s patent application does not guarantee a product, a direct-mount counter-punch from Shimano seems more likely than not given SRAM’s recent move.
In conclusion, these three new designs represent exciting possibilities for bicycle enthusiasts and manufacturers alike. Improving derailleur stability and functionality will lead to better experiences for cyclists of all skill levels. Furthermore, wireless capabilities and smart batteries offer greater convenience and compatibility with modern devices while eliminating unnecessary components such as thumb levers or hangers.
Image Source: Wikimedia Commons
