String Drive is a chainless bicycle drivetrain that uses ropes to propel you forward!
Driven: The First Chainless Bicycle
Automatic bike transmission concept is wild and spiky—and could be
Engineering Comfort Products: Interview with Calvin Collander of Kinekt - CYCLINGABOUT
Alee Denham // - Alee Denham // CyclingAbout.com
Chainless Bicycle Uses Levers #bicycle
Review: Gates Carbon Belt Drive CDC (Tandem) - CYCLINGABOUT
Belts Are Now BETTER Than Chains On Bicycles!
Are Chainless Digital Drive Bicycles The Future of Cycling
Are Chainless Shaft Drive Bicycles a GENIUS or TERRIBLE Idea?