| 摘要 |
<p>The two chainstay tubes (16L, 16R) of a bicycle are made of tubing of unequal rigidity, specifically the chainstay tube (16R) on the chain or drive side is made heavier, while, in the preferred embodiment, the other chainstay tube (16L) is lightened, in order to increase power train efficiency by reducing the magnitude of frame deflection caused by chain stress. In the preferred embodiment, the metal that is added to the chain side chainstay tube (16R) is taken from the non-drive side so that there is no net addition of weight.</p> |
