摔车倒是很正常的作者: 海盗 时间: 2007-7-15 19:44 标题: 回AARON#2 第四赛段，是摔倒和受伤作者: aaron 时间: 2007-7-15 19:49
梁变的呢？ 是第四赛段嘛？有照片嘛？我只看到文档里面提到他们有些时候会用梁变，只是没有见过作者: nakal 时间: 2007-7-15 20:06
为了减重，前变速会选择梁变的，armstrong的车子就是这样的，我找找照片看作者: 浙D 时间: 2007-7-15 23:59
恩,貌似就看到过armstrong是这样的.
作者: 海盗 时间: 2007-7-16 19:01
是白色的作者: 厉天峰 时间: 2007-7-16 23:33
这两张都是用的前量变，具体原因我也不知道~
作者: 浙D 时间: 2007-7-17 09:58
有说是为了减重的,不过换了个手变,多了个梁变.也减不了几克.
也有可能是个人喜好吧.作者: aaron 时间: 2007-7-17 11:00
我看到有个地方说是山地赛段，梁变更保险，好久以前看到的作者: aaron 时间: 2007-7-17 11:06 标题: google 真是神奇，搜索downtube shifter，找到说明了 Lance's downtube shfter
Dear Lennard,
Lance's bike had one STI shifter and a downtube shifter for the front derailleur. Is there a performance advantage in this setup?
Tom
Dear Lennard,
After looking through photos of Lance Armstrong riding his bike, I can't help but notice the small shifter-like lever on the left side of his bike. And I doubt he still uses downtube shifters. Do you know what this lever is? I saw on a bicycle before one of these that activated a switch for a hub generator on a light. And I also doubt Lance has some light hidden away.
Ian
Dear Ian and Tom,
In all of Armstrong's Tours since 1999, he has used a standard (non-integrated) left brake lever and a downtube shift lever for the front derailleur on mountain stages. Given that a standard Dura-Ace, non-integrated brake lever weighs 130 grams and a Dura-Ace 10-speed STI lever weighs 210 grams, you are looking at a simple weight savings. The downtube shift lever can add as little as 30 grams, plus you save a bunch of grams in extra cable and housing you don't need looping around the front of the bike. You don't shift the front derailleur often on a mountain - once at the bottom and once at the top - so there is not much efficiency lost. So you can give up looking for a hidden light on his bike, Ian.
Lennard
