換輪組請益 碳框回鋁框 - 單車
By Hazel
at 2019-11-27T16:30
at 2019-11-27T16:30
Table of Contents
※ 引述《yahoo523 (yahoo523)》之銘言:
: 目前小弟用的是Bora one 35, 因為騎的路線都是爬坡居多,下坡還是對碳框有疑慮所以煞
: 車都輕按...導致用了四個月煞車邊都還非常新!
: 所以這組Bora想賣了換鋁框(版上有對bora one35 ac3有興趣也可以站內信我),目前目
: 標是跑0競速版,培林為Cult
: 這組用起來跟bora one會差很多嗎?主要是剛性部分,因為都是爬坡為主,怕換過去沒bo
: ra硬。
輪組培林很少人討論阻力差異,我只找到這個 ceramicspeed 網站的說明:
https://www.ceramicspeed.com/en/cycling/inside/test-data-reports/10-ways-to-min
其中有這麼一段
3 Watts Savings: Upgrade to an oversized pulley wheel system (OSPW).
The CeramicSpeed OSPW will save a minimum of 2.4 watts when compared
to a stock Dura Ace setup with 11T pulleys.
Alternative 1.3 Watts Savings Pulley Option:
Leave the stock cage as-is and upgrade the 11T pulleys.
Test results show a 1.34 watt efficiency difference between
the most efficient and least efficient 11T pulleys.
A set of CeramicSpeed 11T pulleys consume only 0.033 watts of energy.
意即後變只換導輪培林,並維持 11t 尺寸的話 (導輪加大有另外的影響)
只比"最差的"培林多出 1.34 瓦....
(這還沒有說清楚"最差的"是誰,大家都105/UT以上應該不可能是最差)
就算加大了總共也只能省 2.4~3W.... (所以花這麼多錢改這鬼東西到底是...)?
這還是先假設你的輸出有 400W 的前提下才有這麼慘重的損失.
再同場加映,根據這幾條輪胎在不同的胎壓下的滾阻數據:
https://imgur.com/a/gvebeAX
你只要隨便換個胎、或者不小心沒把胎壓顧好
隨便都可以 cover 掉一顆培林那 1.x watt 阻力
(假設條件是人+車只有42.5kg @29 km/h, 你應該不止42公斤吧...)
所以真的不要太糾結 XDD
--
: 目前小弟用的是Bora one 35, 因為騎的路線都是爬坡居多,下坡還是對碳框有疑慮所以煞
: 車都輕按...導致用了四個月煞車邊都還非常新!
: 所以這組Bora想賣了換鋁框(版上有對bora one35 ac3有興趣也可以站內信我),目前目
: 標是跑0競速版,培林為Cult
: 這組用起來跟bora one會差很多嗎?主要是剛性部分,因為都是爬坡為主,怕換過去沒bo
: ra硬。
輪組培林很少人討論阻力差異,我只找到這個 ceramicspeed 網站的說明:
https://www.ceramicspeed.com/en/cycling/inside/test-data-reports/10-ways-to-min
其中有這麼一段
3 Watts Savings: Upgrade to an oversized pulley wheel system (OSPW).
The CeramicSpeed OSPW will save a minimum of 2.4 watts when compared
to a stock Dura Ace setup with 11T pulleys.
Alternative 1.3 Watts Savings Pulley Option:
Leave the stock cage as-is and upgrade the 11T pulleys.
Test results show a 1.34 watt efficiency difference between
the most efficient and least efficient 11T pulleys.
A set of CeramicSpeed 11T pulleys consume only 0.033 watts of energy.
意即後變只換導輪培林,並維持 11t 尺寸的話 (導輪加大有另外的影響)
只比"最差的"培林多出 1.34 瓦....
(這還沒有說清楚"最差的"是誰,大家都105/UT以上應該不可能是最差)
就算加大了總共也只能省 2.4~3W.... (所以花這麼多錢改這鬼東西到底是...)?
這還是先假設你的輸出有 400W 的前提下才有這麼慘重的損失.
再同場加映,根據這幾條輪胎在不同的胎壓下的滾阻數據:
https://imgur.com/a/gvebeAX
你只要隨便換個胎、或者不小心沒把胎壓顧好
隨便都可以 cover 掉一顆培林那 1.x watt 阻力
(假設條件是人+車只有42.5kg @29 km/h, 你應該不止42公斤吧...)
所以真的不要太糾結 XDD
--
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單車
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