w******x
发帖数: 4396 | 1 this is the standard way to route derailleur cables in bike shops. you'll
have two cables next to the downtube regardless, so having a cross on the
downtube will not make it any more prone to rattle. |
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y*****y
发帖数: 3433 | 4 ☆─────────────────────────────────────☆
Victoon (racer wannabe) 于 (Wed Jun 11 13:16:16 2008) 提到:
很多洋词（中文）我都不知道，有些也不准，大家慢慢整理吧
frameset 车架组
frame 车架
drop out
rear derailleur hanger
front derailleur braze on
toptube
downtube
seattube
headtube
seatstay
seat stay bridge
chainstay
chainstay bridge
buttom bracket
cable stops
fender eyelets
rear rack eyelets
rear rack braze on
fork 前叉
fender eyelets
front rack eyelets
front rack braze on
fork blade
steerer tube
fork crown
headset
threaded headset
t |
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w******x
发帖数: 4396 | 5 if a tube bends, one side is compressed while the other side is pulled.
since solids don't compress much, it's the ability to withstand tensile load
that matters.
bike frames are triangulated tubes. if you load the dropout, the chainstay
is under tensile load, as is downtube. torsional forces like pedal mashing
will also result in tensile load somewhere.
from the pedaling force applied to the BB). there seems to be little
tensile load applied to the material, so why does the tensile strength |
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w******x
发帖数: 4396 | 6 you don't need to worry about it. all you can do is looking out for cracks
in the highly stressed parts of the frame, like the chainstay-bottom bracket
area, downtube-headtube weld, etc.
the way they overbuild aluminum frames is they set a target life cycle, more
than vast majority of the riders' needs. say, for example, 5 years @ 10k
miles/yr by a 170lbs rider with a peak force on pedal ~600lbs. safety margin
/redundancy is then added--say, the frame should last over 10 years @
20kmiles/yr by 3 |
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m******e
发帖数: 428 | 7 fuji makes a cf bike with sora? show me.
btw, sora and tiagra are NOT shitty. shitty rider makes shitty components.
i
know plenty of super fast people on sora/tiagra. hell, some are on steel
bikes from the 80s and have downtube shifters.
what does scattante's and motobecane's mold have to do with fuji? |
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w******x
发帖数: 4396 | 8 derailleur cables are best routed to the opposite side of the headtube, then
cross each other under the downtube. this makes the smoothest bends.
you might also want to trim down front brake housing a bit and remove that
kink at the brake end. |
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r*******1
发帖数: 4394 | 9 谢谢了。
现在车不在，不知道cross under downtube 会不会 rattling？ anyway，晚上回去试
一下就知道了
then |
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r*******1
发帖数: 4394 | 10 今天试了试重新route cable，但是cable 会蹭downtube。
then |
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G*********8
发帖数: 622 | 11 发现有低价折叠车，Downtube & Citizens。
坛子里有买过多的吗，有的话给说说？ |
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f**********e
发帖数: 1994 | 12 同意。如果自己没有修车能力，最好别买旧车。
顺便一提：我竟然从我离婚熟女特卖 P2C 的 downtube 里倒出来
一个全新的 star nut. 以前装车的那家伙真是傻逼大了。 |
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f******s
发帖数: 288 | 13 推荐一款结实的可以挂车把的holder 吧，谢啦！
恩，其实刚才发现车上还是有钻固定的孔的，不过是在downtube下面，感觉很不安全啊
。。 |
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f****l
发帖数: 5514 | 14 就是最近在MTB的trail上骑,经常有横在路上的树干要过.
我现在的水平是前轮能稍微提起来一点, 所以过小一点的树干问题不大, 过后轮的时候
只要稍微身体跳一下后轮就能骑过树干.
但是稍微粗一点树干就不行的, 基本就是downtube或者pedals会被树干卡住...
我想知道过这种障碍有啥技术要点? 还是一定要苦练bunny hop? 有啥循序渐进的联系
方法? |
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p********y
发帖数: 5141 | 15 Someone asked what the rules of bike jersey, and someone else point him to
this link. It is hilarious. Totally loved it! =D
------------------------------------------------------
THE RULES
http://www.velominati.com/the-rules/
by The Keepers / Jun 1 2009 / 6,291 posts
We are the Keepers of the Cog. In so being, we also maintain the sacred
text wherein lie the simple truths of cycling etiquette known as The Rules.
It is in our trust to maintain and endorse this list.
For those struggling to under... 阅读全帖 |
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s**a
发帖数: 1995 | 16 我的schwalbe Marathon Plus 在纽约通勤超过一年。没有瘪胎的情况。纽约路面很差的
优点
防扎性能好
sidewall 有反光条，适合夜晚通勤。
有排水纹，雨天抓地好
缺点
厚，重
因为厚，比起别的轮胎，和前叉，brake caliper 距离小。我的车装上新闸皮时，需要
把新闸皮磨掉一层。否则轮胎就会磨brake caliper. 这也许和我通勤车的geometry 有
关，我前轮很downtube直接距离本来就已经很小了 |
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x*****9
发帖数: 3256 | 19 找到了thumb shifter叫梁变
但是找不到5速的 |
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s********e
发帖数: 158 | 21 整车没脚踏 8.2kg
车架有些边角可以看到些细节，从没有仔细看过碳架 不知道大厂的也是这样吗？
1 车架downtube有个地方有些毛刺，肉眼可见，用手可以明显摸出。
2 前叉一边的dropout不平整。
3 bottom bracket shell走线的地方看起来挺粗糙，有个地方缺了一小块，好像铺的时
候有异物？
看到 JensonUSA的Jamis Xenith Comp Bike 2011 50% $979.99
也是全碳车架，用的是BB30，碳坐垫管
不过是老的shimano 5700 105 10速，
整车还是很漂亮，比nashbar的无图装好看多了，也算是有牌的厂了，真想退了nashbar
换这个了
看了jamis 的宣传册。xenith comp 碳架用的是Mid-modulus T700, 12k weave outer,
不知道nashbar的车架参数是什么。感觉jamis应该车架会更好些。不知道是不是这样。
http://www.jensonusa.com/!CIiiAh3t8RHoB-LV2tmlvQ!/Jamis-Xenith- |
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s********e
发帖数: 158 | 22 发现这个downtube 双手用力可以按一点变形出来，晕，toptube和seat tube还是很有
刚性，这个难道是为了吸震吗 |
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s********e
发帖数: 158 | 23 按按downtube中间偏下接近脚蹬的位置 看看会不会有细微形变 我刚才去giant按了按
defy advanced 入门碳车，基本没有形变， |
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i*********5
发帖数: 19210 | 24 i don't lock my bike outside, ever!
one bottle in the downtube cage, one or two extra bottles in my jersey's
back pockets if needed. |
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w******x
发帖数: 4396 | 25 某些车和某些地方的cat to downtube螺丝是拧好之后spot weld on的，变态得很 |
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