> CeramicSpeed’s chainless drivetrain concept is seeking investors Clever engineering, but it has never come to market. The design uses a shaft tipped with CeramicSpeed’s ceramic ball bearings to drive the rear wheel instead of a chain, with the brand claiming this is part of its effort to create a 99% efficient drivetrain. CeramicSpeed demonstrated its shaft drive concept, called Driven, back in 2018 and a year later demonstrated that it could change gears thanks to some electronic trickery. There are already chainless bike designs out there but they’ve never hit the mainstream. The Injenius bike has no chain to slip, break, or get dirty, and David promises it’ll be low maintenance along offer improved traction.ĭavid Jephcott has a long history of working on related ideas and patented a method for transferring drive using “a line of contiguous bead-like drive-transferring members” way back in 2002. “We aim to achieve 1% of the global market within three years by initially licensing the technology to manufacturers who already have market share plus manufacturing and distribution channels in place.” This process will determine the parameters within which the drive will work most efficiently.” “Our first fully equipped prototype will be a road bike version. “We can add a motor to the pedal mounting should it be needed but this will only be an aid as and when required and without affecting the main principle of the design.”ĭavid Jephcott says, “Having proven the concept via a physical drive cassette and CAD (computer aided design) simulation, we are now adding the front wheel drive and powered steering to provide greater stability on greasy surfaces and increased safety via improved handling. “The design brings all the advantages without the potential of electronics being compromised in the middle of nowhere and leaving the bike unrideable. Gerry Wilkinson, who is working with David Jephcott to deliver the project, says, “The Injenius bike works with an intelligent compression drive which distributes the energy to both the front and rear wheel equally purely by a more efficient use of human effort via the pedals. The University of Sheffield’s Advanced Product Development Centre has described the design as “the most exciting development in cycling history since the turn of the last century, incorporating a revolutionary drive system that could transform the industry” although a prototype has yet to be built so we can’t show you pictures of it in action.
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