[問題] Tiagra 9速升級飛輪
小弟目前的車是Giant FCR,
齒盤: TRUVATIV TOURO 30/42/52
飛輪: SRAM PG-950 (12T-26T, 9速)
後變: Shimano RD-4500 (Tiagra 長腿)
最近有在想升級飛輪到32T
(小弟肉腳,每次爬跛都氣喘如牛...)
但做了很多功課,似乎沒辦法只換飛輪
因為按照公式,
(52 - 30) + (X - 12) <= 37 (Tiagra 九速長腿最大齒容),
所以X <= 27
但小弟不是很確定自己做的功課正不正確,
還有請版上大大幫忙解惑,謝謝大家!
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◆ From: 220.132.158.82
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09/12 17:21, , 1F
09/12 17:21, 1F
抱歉我沒有說清楚,一樣是9速,只是希望飛輪能升級到大一點的齒盤,
目前飛輪最大盤是26T,想說能不能只換飛輪,換到32T的...
※ 編輯: jasonkung 來自: 220.132.158.82 (09/12 17:48)
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※ 編輯: jasonkung 來自: 124.10.83.252 (09/12 21:05)
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