| 摘要 |
<p>The narrow diameter wheel rim is made from two flanges (1, 2) held together on the hub support (3). One flange (1) is rigidly fixed on the hub while the other, movable one (2) is secured by a pressure element (11) fitted afterwards. No fixing bolts are threaded through the rim due to the confined space. The pressure element can be a threaded sleeve on the hub cylinder, or can be fitted to the hub by a simple bayonet type of fastener.</p> |
