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PostPosted: Thu Nov 16, 2017 3:44 pm 
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Joined: Sun Nov 08, 2015 2:24 am
Posts: 45
Antoine wrote:
I was thinking South Korea is pretty new in cycling (at least with road bikes) and people may be unaware that light frames,components and wheels can be easily damaged unlike heavy city bikes. And never have experienced broken spokes, bend rims, scratched paint, broken seatpost, ... .
While lying on the floor a bike can be damaged by a passing car or anybody walking around, so why do that when there is a wall or something nearby ?
Because you don't care or you are overconfident of the overall strongness of the materials. And therefore you can do things wrong like over tightening bolts.


There is underestimating tone on your mention as far as I feel.
but I understand. I do not know that metro of paris smells piss, until my friend who traveled france told me to.

so here is some info for you about cycling in Korea.

There have been cycle competition in Korea since early 1900's, and one of the most famous athlete is 'Um bok-dong', he had won the competition over japanese.
https://ko.wikipedia.org/wiki/%EC%97%84 ... 5%EB%8F%99
He rides Rudge-Whitworth from UK
Image

besides road cycle race, Keirin is popular sports ever since and many people rides cycle as leisure.

during '70 to '90, MTB is more popular in Korea but trend changes to cycle again in recent 10 to 20 years.
it means we are not 'pretty new in cycling'.
we've seen Lance Armstrong won Tour riding alloy bike.
there are lots of people buying first gen of carbon bike in Korea and so many cycling fans buy high-end bike nowadays.
you can see here.
http://corearoadbike.com/board/board.ph ... Menu02Top1

almost every Korean user of carbon bike have knowledge that bike should assembled with exact torque level and many of them bought torque key(wrenches) on their own.
actually, I do have one also.

plus in my experience, lying down bike on the ground because so windy at top of hills, so there is chance to fall off by wind. nobody thinks it is okay someone steped on their bike.(at least in Korea, but France? maybe... I don't know)


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PostPosted: Thu Nov 16, 2017 7:54 pm 
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Joined: Tue May 03, 2011 6:36 pm
Posts: 417
Location: France
RTW wrote:
Antoine wrote:
---


Keep digging. Are you basing this on anything, or just prejudice?

Have you ever been to Korea?

I know you probably don't mean to be insulting, and you are just questioning the general treatment of these bicycles which lead to this incident. But it is conjecture, based on photographs. It just comes across as racism.


I really don't see anything insulting, I'm just saying that people relatively new in cycling can make mistakes , beeing Korean or not.
And I'm assuming road cycling in South Korea is not as common as it is in France , Belgium and Italy.
I'm assuming too that an expensive bike must not be lying on the ground, usually people I see doing that don't take much care of their bike.

I haven't been in Korea but if you want to know I spend one year in Asia (Indonesia, Malaysia, Singapor,Thailand, Nepal , Hong-Kong then one month in Japan). But it has nothing to do with the matter and your racist comment is just ridiculous.


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Posted: Thu Nov 16, 2017 7:54 pm 


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PostPosted: Thu Nov 16, 2017 7:58 pm 
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Joined: Tue May 03, 2011 6:36 pm
Posts: 417
Location: France
joejack951 wrote:
Antoine wrote:
are you sure about that, Aluminium frames can be damaged by the heat


The aging process of the -T6 heat treatment for 6061 is done at 325°F (160°C) or above. If you aren't exceeding those temperatures, you aren't compromising the metal. Welding produces very high temperatures and that can certainly affect the metal, but we're talking temperatures nearly an order of magnitude higher than the aging temperature.


The heat treatment is done once, after that it's another matter no ?
I will look at the user manual of my CAAD 9, if I'm not mistaking there mentioned not to live the bike inside a car in the heat.


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PostPosted: Thu Nov 16, 2017 8:09 pm 
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Joined: Tue May 03, 2011 6:36 pm
Posts: 417
Location: France
ohhyeok90 wrote:
Antoine wrote:
---.


There is underestimating tone on your mention as far as I feel.
but I understand. I do not know that metro of paris smells piss, until my friend who traveled france told me to.

Absolutely not, I'm just trying to find an explanation of this incident who seems really odd and unknown,

Paris and it's suburbs are worst than you think, I can tell you I live there.
And I don't like Mavic wheels, I own 4 pairs of wheel, none is Mavic.


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PostPosted: Thu Nov 16, 2017 8:58 pm 
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Joined: Fri May 25, 2007 6:43 pm
Posts: 3304
Antoine wrote:
The heat treatment is done once, after that it's another matter no ?
No, it's not another matter. You'd need to go pretty much up to heat treatment temps to start having any effects on the properties of the metal.

Antoine wrote:
I will look at the user manual of my CAAD 9, if I'm not mistaking there mentioned not to live the bike inside a car in the heat.
That'll be more to do with over inflated tyres and softening of rubbers/fabrics and blowouts. (You can get to ~80 degrees in a car in direct sun. Probably enough to soften tyres noticeably and increase the tyre pressure by around 20-25%. Leading to a blow out, or worst case, damaging the tyre so it blows out later, when you are riding it.)


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PostPosted: Thu Nov 16, 2017 9:57 pm 
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Joined: Sat Oct 15, 2016 9:08 pm
Posts: 219
I see that the bikes lying on the ground are on their non-drivetrain side, that says to me the riders know what they're doing. Here in the US I see people doing that too, sometimes it's just convenient, like when the bike stand is full.


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