A chainless bicycle is a bicycle that transmits power to the driven wheel through a mechanism other than a metal chain. Hildick's chainless bicycle gear (1898) Directly driven bicycle (see penny-farthing and unicycle) Shaft-driven bicycle Belt-driven bicycle Hydraulic bicycle (and pneumatic bicycle) Hybrid vehicle (see series hybrid bicycle) Some rowed bikes use a cable or a linkage. Stringbike the pulley-driven Hungarian designed bike Bicycle drivetrain systems Outline of cycling Anne Eisenburg (October 23, 2010). "Bicycles, Unchained and Grease-Free". NY Times. Retrieved 2010-10-28. This cycling-related article is a stub. You can help Wikipedia by expanding it.vte