| 摘要 |
<p>The problem of adapting a standard bicycle to accommodate two active riders is solved by this invention, an adapter frame that attaches to the back of a single-rider bicycle, transforming the bicycle into a tandem bicycle. The rear wheel (31) of the bicycle is removed and installed on the back end of the adapter frame. The adapter frame attaches to the seat post (33) and rear drop-outs (21) of the bicycle, providing a rigid 3-point connection. This transforms the standard bicycle into a rigid frame, two wheel, tandem bicycle for two riders with pedals. An adapter axle assembly (13) with sprockets on the lower front of the adapter frame serves two functions. It easily attaches between the rear dropouts of the standard bicycle using a standard axle with quick-release fastener (49), and it transmits drive power to the rear crank (39) without modifying the chain (34) of the standard bicycle.</p> |
