登山車改700c輪組請益 - 公路車
By Andy
at 2014-05-27T19:31
at 2014-05-27T19:31
Table of Contents
猶豫了很久到底要不要再回一篇
反正都打那麼多了再回一篇應該是合情合理的
順便讓各位板友在問題海之中看點不一樣的XD
如果版主覺得不妥的話就刪掉吧,我有留暫存檔可以寫回原本的回文
-
改成細胎、換成大輪組不就是要拚速度嗎XD
騎柏油路也是有障礙物、坑洞,大輪子撞到造成的力矩比小輪子還大吧
我倒是沒有實際去算,這是腦內模擬的結論
我就是基本教義派,對我來說改細胎硬叉什麼的根本是異端XD
明明就有公路車,為什麼還要把登山車改裝成像公路車的樣子,我一直不了解
我剛入門的時候也有一段時間很迷細胎跑柏油路,後來發現好無聊
最後還是換巧克力胎,回林道吸新鮮空氣比較快活
公路車也有像Roubaix這種,聽說騎感比較舒服的車吧?
我不太了解公路車,在這邊就不深入評論了
你這邊觀點怪怪的
就我所知,所謂的26"就是代表裝上外胎後,直徑會約等於26"(660mm)
實際最外圍直徑會因為型號、氣壓、騎者重量的不同而不一樣
而這個直徑是跟胎寬沒有關係的
Wikipedia寫說登山車一般輪胎會是26.2"(665mm)就是了
同理,700C就是裝上輪胎後會是約700mm
同樣引用Wikipedia的資料,公路車使用的輪子會小於28"(711mm)
請參考圖片:http://i.imgur.com/0iBlGjm.png
如果是基於我所知、跟上述引用的資料正確的話
兩個直徑差是700 - 660 = 40mm,也就是半徑差20mm=2cm
只要是標準胎,26"跟700c半徑都會差2cm,並非你說的0.5cm
整車的重心提高2cm我沒騎過;腦補了一下,轉彎的時候應該會很不習慣
改輪子大小對車架一定會有非設計時預期的受力,我不知道對強度的影響到底有多大
用英文的概念來解釋的話就是integrity compromised
我不能咬定一定會導致受傷,但同理地,你也不能保證對車架沒有影響
另外我只有聽說碳纖維輪組有限重,原來碳纖維車架也有限重的嗎?受教了
可以請問是哪一家廠商做的嗎?我想研究一下評價
同一車架不同尺寸,會盡量設計成騎感一樣
除非你說的是2015年式Specialized在公路車推的,不同身高有不同需求的設計
登山車改彎把...|柱|ω・`)
我是沒騎過專業公路車,不過長途上應該是公路車比較省力吧
不然大家買登山車改彎把變公路車就好啦,公路車都不用賣啦XD
--
反正都打那麼多了再回一篇應該是合情合理的
順便讓各位板友在問題海之中看點不一樣的XD
如果版主覺得不妥的話就刪掉吧,我有留暫存檔可以寫回原本的回文
-
推 minghanwu :你說的都沒錯,但是騎乘條件不是那麼強烈的時候, 05/27 01:07
→ minghanwu :並沒有那麼重大的差異,受傷? 那麼騎淑女車比賽, 05/27 01:08
→ minghanwu :會不會有車架掛點的可能? 會吧,你看問改車的人是 05/27 01:09
→ minghanwu :要拿去拼速度嗎? 05/27 01:09
→ minghanwu :實際上,這裡和01都有點太過放大你所謂的 intended 05/27 01:09
→ minghanwu :use? 不是嗎? 05/27 01:09
→ minghanwu :而且登山車不管怎麼看,車架強度都遠勝公路車,正是 05/27 01:10
→ minghanwu :來自所謂的 intended use 05/27 01:10
→ minghanwu :換了細胎,一般不會傻到去 XC DH 05/27 01:12
→ minghanwu :原發問者是問改 700c 的胎,只會拿去騎柏油路吧 05/27 01:14
改成細胎、換成大輪組不就是要拚速度嗎XD
騎柏油路也是有障礙物、坑洞,大輪子撞到造成的力矩比小輪子還大吧
我倒是沒有實際去算,這是腦內模擬的結論
→ minghanwu :你說的幾何牽一髮動全身是沒錯,但是那是極致的 05/27 01:16
→ minghanwu :追求,我也在推文中說了,改了騎乘感還是登山車 05/27 01:16
→ minghanwu :而在你說的前叉的接受範圍內,講究的騎士還是有一堆 05/27 01:17
→ minghanwu :幾何改變的討論,我只是想表達,對原發問者來說, 05/27 01:17
→ minghanwu :換個 700c 幾何的改變,不會感受那麼大 05/27 01:18
→ minghanwu :我改過,不敢說我騎得出車架幾何的感受,但是業餘的 05/27 01:20
→ minghanwu :玩法,也不需要全部用專業的標準來否定 05/27 01:21
我就是基本教義派,對我來說改細胎硬叉什麼的根本是異端XD
明明就有公路車,為什麼還要把登山車改裝成像公路車的樣子,我一直不了解
我剛入門的時候也有一段時間很迷細胎跑柏油路,後來發現好無聊
最後還是換巧克力胎,回林道吸新鮮空氣比較快活
公路車也有像Roubaix這種,聽說騎感比較舒服的車吧?
我不太了解公路車,在這邊就不深入評論了
→ minghanwu :最後,26" x2.1 的外胎,和 700x23c 直徑相差僅約 05/27 01:27
→ minghanwu :1cm,也就是 BB 離地上升 0.5cm 左右,比 26x1.75 05/27 01:28
→ minghanwu :換成 26x1.25 的改變幅度還小,如果這樣對幾何影響 05/27 01:29
→ minghanwu :重大,豈不是外胎都不能換寬度了 05/27 01:30
你這邊觀點怪怪的
就我所知,所謂的26"就是代表裝上外胎後,直徑會約等於26"(660mm)
實際最外圍直徑會因為型號、氣壓、騎者重量的不同而不一樣
而這個直徑是跟胎寬沒有關係的
Wikipedia寫說登山車一般輪胎會是26.2"(665mm)就是了
同理,700C就是裝上輪胎後會是約700mm
同樣引用Wikipedia的資料,公路車使用的輪子會小於28"(711mm)
請參考圖片:http://i.imgur.com/0iBlGjm.png
如果是基於我所知、跟上述引用的資料正確的話
兩個直徑差是700 - 660 = 40mm,也就是半徑差20mm=2cm
只要是標準胎,26"跟700c半徑都會差2cm,並非你說的0.5cm
整車的重心提高2cm我沒騎過;腦補了一下,轉彎的時候應該會很不習慣
→ minghanwu :改個700c 輪組對幾何影響重大,甚至有車架結構風險 05/27 01:32
→ minghanwu :還可能導致受傷,您誇大的太離譜了 05/27 01:33
→ minghanwu :照這說法,碳纖車體根本就是大問題,強度根本不行 05/27 01:37
→ minghanwu :連體重都有限制,也不能撞大坑,不就明白告訴使用者 05/27 01:38
→ minghanwu :強度不足,只能限定使用方式 05/27 01:38
改輪子大小對車架一定會有非設計時預期的受力,我不知道對強度的影響到底有多大
用英文的概念來解釋的話就是integrity compromised
我不能咬定一定會導致受傷,但同理地,你也不能保證對車架沒有影響
另外我只有聽說碳纖維輪組有限重,原來碳纖維車架也有限重的嗎?受教了
可以請問是哪一家廠商做的嗎?我想研究一下評價
推 minghanwu :而且同一個車架不同尺寸的幾何差異,比換個 700c 造 05/27 01:41
→ minghanwu :成的變化更大,建議您先想一想 05/27 01:42
同一車架不同尺寸,會盡量設計成騎感一樣
除非你說的是2015年式Specialized在公路車推的,不同身高有不同需求的設計
→ minghanwu :今天如果有人要拿公路車改前避震,改巧克力胎,那我 05/27 01:43
→ minghanwu :很贊同這篇,拿個弱車架去加避震,搞不好還來個輕 05/27 01:44
→ minghanwu :越野,那肯定不行,他是拿車架比較強的登山車換個 05/27 01:44
→ minghanwu :700c 頂多提醒他,換了 700c 輪組千萬別越野,700c 05/27 01:45
→ minghanwu :輪組普遍強度不行 05/27 01:45
→ minghanwu :強度不足應付越野 05/27 01:45
→ minghanwu :題外話,休閒騎 登山車改彎把 700c 騎來很舒適 05/27 01:47
→ minghanwu :尤其騎長途遇到逆風,可以省很多力,兼之騎來比公路 05/27 01:49
→ minghanwu :車安定,是很舒服的 05/27 01:49
登山車改彎把...|柱|ω・`)
我是沒騎過專業公路車,不過長途上應該是公路車比較省力吧
不然大家買登山車改彎把變公路車就好啦,公路車都不用賣啦XD
--
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