Tiagra 9速升級飛輪 - 單車
By Todd Johnson
at 2012-09-12T15:57
at 2012-09-12T15:57
Table of Contents
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!
--
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!
--
Tags:
單車
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