| 摘要 |
<p>The wheel comprises an electric motor (4) integral with the pins (5 and 6) of the hub, to be mounted on the fork of the bicycle, said motor being connected by means of a freewheel (12) to the gear (10), which meshes with the crown gear (11), integral with the hub (1), to allow the wheel to be rotated by the electric motor itsel, which is extremely silent and powered by a recharging battery mounted on the bicycle itself.</p> |
