究竟,那個自行車踩踏,力量有多大呢? - 單車
By Skylar DavisLinda
at 2017-05-24T08:13
at 2017-05-24T08:13
Table of Contents
※ 引述《ddar (白馬~~馬力夯.....@@)》之銘言:
: 事情是這樣的,最近這1個多月,連續看到兩篇文章,在談踩踏力量。
: 紛紛都指出,踩踏力量不會超過"騎士自己的體重"。
: 小樹自轉車
: https://www.facebook.com/cienne.wang/posts/10212087164116413
: 徐國峰 HSU KUO FENG
: http://tinyurl.com/mp3avr9
: 先說結論,這個和我個人,還有一些車友的認知都不同。
: 現在大家都有功率計,其實很好計算。
: 這邊借一下成大之光,大專盃乙組XC賽常勝軍柚子哥的討論說明。
: 功率計的資料上傳到訓練軟體後,有一項數據是 AEPF 平均踏板受力,
: 以騎士體重 60 kg 計算,約等同於 588.4 N 的出力,
: 這個數字大概都是在靜態發車時可以超過,
: 連我這個衝刺超爛,最大功率 798w 的都可以超過,
: 更不用說一堆最大功率破千瓦強者了。
: 腿部出力無法超過體重?
: 你可以用單腳半蹲,你的單腳腿力已經輸出你的體重大小的力了,
: 你如果可以用單腳跳躍,那就超過體重了。
其實小弟只是單車新手
但單以物理觀念來看
一般來說踩踏的確不能超過體重
牛頓有說過作用力要等約反作用力
因此你踩踏超過體重後
等於在你身上的反作用力大於體重
等於妳會往反方向移動(90度踩踏等於妳要飛起來)
因此一般來說是沒辦法超過體重的
當然還是有些狀況可以超過
像是用手抓住 利用車架的內力抵銷超過體重的力量
這樣妳的身體就不會飛起來
所以有機會超過體重
但一般騎乘狀態來說來說是很難的
這樣的說法應該沒有太大問題(95%騎乘都符合)
但是有特例而已
-----
Sent from JPTT on my iPhone
--
: 事情是這樣的,最近這1個多月,連續看到兩篇文章,在談踩踏力量。
: 紛紛都指出,踩踏力量不會超過"騎士自己的體重"。
: 小樹自轉車
: https://www.facebook.com/cienne.wang/posts/10212087164116413
: 徐國峰 HSU KUO FENG
: http://tinyurl.com/mp3avr9
: 先說結論,這個和我個人,還有一些車友的認知都不同。
: 現在大家都有功率計,其實很好計算。
: 這邊借一下成大之光,大專盃乙組XC賽常勝軍柚子哥的討論說明。
: 功率計的資料上傳到訓練軟體後,有一項數據是 AEPF 平均踏板受力,
: 以騎士體重 60 kg 計算,約等同於 588.4 N 的出力,
: 這個數字大概都是在靜態發車時可以超過,
: 連我這個衝刺超爛,最大功率 798w 的都可以超過,
: 更不用說一堆最大功率破千瓦強者了。
: 腿部出力無法超過體重?
: 你可以用單腳半蹲,你的單腳腿力已經輸出你的體重大小的力了,
: 你如果可以用單腳跳躍,那就超過體重了。
其實小弟只是單車新手
但單以物理觀念來看
一般來說踩踏的確不能超過體重
牛頓有說過作用力要等約反作用力
因此你踩踏超過體重後
等於在你身上的反作用力大於體重
等於妳會往反方向移動(90度踩踏等於妳要飛起來)
因此一般來說是沒辦法超過體重的
當然還是有些狀況可以超過
像是用手抓住 利用車架的內力抵銷超過體重的力量
這樣妳的身體就不會飛起來
所以有機會超過體重
但一般騎乘狀態來說來說是很難的
這樣的說法應該沒有太大問題(95%騎乘都符合)
但是有特例而已
-----
Sent from JPTT on my iPhone
--
Tags:
單車
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