In his notebook, dated March 19, 1808, Cayley proposed that in order to produce "the lightest possible wheel for aerial navigation cars," one should "do away with wooden spokes altogether and refer the whole firmness of the wheel to the strength of the rim only, by the intervention of tight strong cording … " See: J.A.D. Ackroyd (2011). "Sir George Cayley: The invention of the aeroplane near Scarborough at the time of Trafalgar,"(PDF). Archived 2013-12-26 at the Wayback Machine Journal of Aeronautical History [Internet publication], paper no. 6, pages 130–181. Cayley's tension-spoke wheel appears on page 152, "3.7 The Tension Wheel, 1808". (به انگلیسی).{{cite web}}: نگهداری یادکرد:نامهای متعدد:فهرست نویسندگان (link)
