公路車飛輪齒比選擇 - 公路車
By Mia
at 2014-02-23T13:48
at 2014-02-23T13:48
Table of Contents
想買新的公路車,款式雖然已經挑好是配 Shimano 105 變速系統
但發現 Sram Apex 飛輪齒比最輕檔32t,老闆也表示可幫我客製
想要請教車友這兩款飛輪的齒比你們會比較偏好哪個
(僅考慮齒比。手感、順不順、重量之類的因素先不考慮)
以下是2款飛輪齒比:
Sram Apex│大盤║50 t│34 t║ Shimano 105│大盤║50 t│34 t
─────┼──╫──┼──╫──────┼──╫──┼──
飛輪│齒比║2檔 │1檔 ║ 飛輪│齒比║2檔 │1檔
═════╪══╬══╪══╬══════╪══╬══╪══
11 t│10檔║4.55│ ║ 11 t│10檔║4.55│
─────┼──╫──┼──╫──────┼──╫──┼──
12 t│ 9檔║4.17│ ║ 12 t│ 9檔║4.17│
─────┼──╫──┼──╫──────┼──╫──┼──
13 t│ 8檔║3.85│ ║ 13 t│ 8檔║3.85│
─────┼──╫──┼──╫──────┼──╫──┼──
15 t│ 7檔║3.33│2.27║ 14 t│ 7檔║3.57│2.43
─────┼──╫──┼──╫──────┼──╫──┼──
17 t│ 6檔║2.94│2 ║ 15 t│ 6檔║3.33│2.27
─────┼──╫──┼──╫──────┼──╫──┼──
19 t│ 5檔║2.63│1.79║ 17 t│ 5檔║2.94│2
─────┼──╫──┼──╫──────┼──╫──┼──
22 t│ 4檔║2.27│1.55║ 19 t│ 4檔║2.63│1.79
─────┼──╫──┼──╫──────┼──╫──┼──
25 t│ 3檔║ │1.36║ 21 t│ 3檔║ │1.62
─────┼──╫──┼──╫──────┼──╫──┼──
28 t│ 2檔║ │1.21║ 24 t│ 2檔║ │1.42
─────┼──╫──┼──╫──────┼──╫──┼──
32 t│ 1檔║ │1.06║ 28 t│ 1檔║ │1.21
兩者差異:
Apex 最輕檔可更輕鬆爬坡
但齒比綿密度較差,且 1*7 和 2*4 的齒比重複,都是 2.27
105 齒比綿密度較佳,也沒重複齒比問題
但最輕檔比較吃力
我的疑問是
該不該為了 32t 救命盤,而負擔較差的齒比綿密度,和少一種齒比的代價?
(齒比超過3的檔位就無所謂了,因為也踩不了這麼快)
謝謝各位車友解答
--
但發現 Sram Apex 飛輪齒比最輕檔32t,老闆也表示可幫我客製
想要請教車友這兩款飛輪的齒比你們會比較偏好哪個
(僅考慮齒比。手感、順不順、重量之類的因素先不考慮)
以下是2款飛輪齒比:
Sram Apex│大盤║50 t│34 t║ Shimano 105│大盤║50 t│34 t
─────┼──╫──┼──╫──────┼──╫──┼──
飛輪│齒比║2檔 │1檔 ║ 飛輪│齒比║2檔 │1檔
═════╪══╬══╪══╬══════╪══╬══╪══
11 t│10檔║4.55│ ║ 11 t│10檔║4.55│
─────┼──╫──┼──╫──────┼──╫──┼──
12 t│ 9檔║4.17│ ║ 12 t│ 9檔║4.17│
─────┼──╫──┼──╫──────┼──╫──┼──
13 t│ 8檔║3.85│ ║ 13 t│ 8檔║3.85│
─────┼──╫──┼──╫──────┼──╫──┼──
15 t│ 7檔║3.33│2.27║ 14 t│ 7檔║3.57│2.43
─────┼──╫──┼──╫──────┼──╫──┼──
17 t│ 6檔║2.94│2 ║ 15 t│ 6檔║3.33│2.27
─────┼──╫──┼──╫──────┼──╫──┼──
19 t│ 5檔║2.63│1.79║ 17 t│ 5檔║2.94│2
─────┼──╫──┼──╫──────┼──╫──┼──
22 t│ 4檔║2.27│1.55║ 19 t│ 4檔║2.63│1.79
─────┼──╫──┼──╫──────┼──╫──┼──
25 t│ 3檔║ │1.36║ 21 t│ 3檔║ │1.62
─────┼──╫──┼──╫──────┼──╫──┼──
28 t│ 2檔║ │1.21║ 24 t│ 2檔║ │1.42
─────┼──╫──┼──╫──────┼──╫──┼──
32 t│ 1檔║ │1.06║ 28 t│ 1檔║ │1.21
兩者差異:
Apex 最輕檔可更輕鬆爬坡
但齒比綿密度較差,且 1*7 和 2*4 的齒比重複,都是 2.27
105 齒比綿密度較佳,也沒重複齒比問題
但最輕檔比較吃力
我的疑問是
該不該為了 32t 救命盤,而負擔較差的齒比綿密度,和少一種齒比的代價?
(齒比超過3的檔位就無所謂了,因為也踩不了這麼快)
謝謝各位車友解答
--
Tags:
公路車
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