不组合动员旅程调度的传动齿轮箱，发掘本质拔取的是自行车飞轮的卡簧安排。
Ever wonder what led trips in the regulation of transmission gearbox found it uses a bicycle wheels clip design.
山图也发了联合飞轮加上后轮，称为股枢纽于1969年，小轮自行车。
SunTour also made a combined freewheel plus rear hub, called Unit-Hub, in 1969 for small wheel bicycles.
自行车配套产品：变速器关键零件，手柄，飞轮等零件；方型线材之零件耐久性较好，一般国际性品牌高级自行车变速器首选。
The Bicycle allocate Products: Change Speed Capacity Key Spare Part, Handle, Flywheel Spare Part Etc. Square Shape are Durability, International Brand and High-Grade Bicycll are Best Choose.
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