推荐回答(3个)
简单点来说 我们所说的21速也好27速也好 都是讲前飞和后飞的齿盘乘积 前飞的齿盘一般有三个 后面有多有少 不管多少速 我们一般在骑的时候平地上我们只会使用一种搭配模式 所以这三种变速 基本一样 不影响速度 然后在爬坡的时候 21速和27速的差别就显示出来了 所谓变速更细腻 就是说你可以多几种变速的选择 使你爬坡更省力 更舒服 更符合你的骑行方式
至于车座的高度 最合适最舒服的是车座跟车把同高 你站在地上车把到腋窝处 刚好 要是要求省力 那可以适当将车座拉高 人在车座上越高 传送力越大 相对越省力 最高不要超过车管警戒线 否则会出意外 也不舒服 车的快慢跟车座的高低没什么关系 车座的舒适度是最重要的 也跟你车架型号有关 还有什么问题可以再问我
21速后面飞轮是七片,24速是八片,27速是九片。片速多,档速也多,选择的也多。速度快不快就不好说。帮助到你的话给我个采纳哦
区别一:数别不同(飞轮牙盘数量不一样);
区别二:9速对于多数品牌的变速器来说,都是专业与业余的划分线,以下的都是业余及入门级的;
专业级的能效更高(更润),相对来说长途骑行可以省更多点力,但是调校得好的话,短途不会有明显的不同。
供参考
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