| 摘要 |
<p>The bicycle or motorcycle with a chain (9) final drive (or belt), having a rear suspension, has rollers (10) fixed to the sprung mass of the frame. The rollers can intermittently or continuously engage the surface of the belt to guide it. The roller can be singular and positioned above the drive run of the chain. Alternatively, there can be two pulleys, one above and one below the drive run. There can be further pulleys placed to engage the chain at the extremities of the suspension movement.</p> |
