在使用老式皮带传动的“嘉陵”、“建设”、“渭阳”等50型摩托车的广大用户中,许多人认为废旧曲轴和曲轴箱(主要是104轴承内孔与曲轴颈部配合松动及104轴承外圈与曲轴箱内孔配合松动)没用了,就把它们丢掉。我看到这些东西扔了很可惜,就琢磨着怎样将它们“起死回生”,没想到经过修改后使用效果很好。下面就介绍一下修改过程。 In the majority of users of 50 type motorcycles such as “Jialing”, “Construction” and “Weiyang” which are driven by the old-style belt, many people think that the used crankshaft and crankcase (mainly 104 bearing bore and crankshaft neck are loose and 104 bearing outer ring with the crankcase bore with loose) useless, throw them away. I saw these things thrown a pity, wondering how to put them “back to life”, did not expect to use the modified effect is very good. Here’s about the modification process.