| 摘要 |
<p>On a lateral attachment (3) of the rear fork (4) of a moped is fastened one end of a horizontal pin (1) which constitutes, simultaneously, the fixed support of a reducer (7) and the central element (8) of a freewheel device (9) whereon is keyed the slow output wheel (10) of the reducer itself. The other end of the horizontal pin (1) comprises a threaded hole (17) wherein is screwed a stem (19) which, through the attachment (3'), chain side, of the fork (4), supports coaxially and on bearings (21) the rear wheel hub, which is engaged coaxially to the freewheel device (9) by means of a coupling with front teeth (22, 22'). For the disassembly of the rear wheel, it is sufficient to unscrew and extract the stem (19), from the chain side, remove the washer/shim (23) and axially move back the wheel hub (20) until the front teeth are disengaged (22, 22'), then extract the wheel. The reducer remains in its correct position, rigidly engaged to the fork (4) by means of the pin (1).</p> |
