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From: AMuzi <am@yellowjersey.org>
Newsgroups: rec.bicycles.tech
Subject: Re: Urban cycling update
Date: Sat, 28 Sep 2024 15:53:30 -0500
Organization: Yellow Jersey, Ltd.
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On 9/28/2024 2:52 PM, Shadow wrote:
> On Sat, 28 Sep 2024 14:09:33 -0500, Mark J cleary
> <mcleary08@comcast.net> wrote:
> 
>> On 9/28/2024 1:44 PM, AMuzi wrote:
>>> On 9/28/2024 1:09 PM, Shadow wrote:
>>>> On Sat, 28 Sep 2024 09:34:28 -0500, AMuzi <am@yellowjersey.org> wrote:
>>>>
>>>>> https://nypost.com/2024/09/27/lifestyle/nyc-bike-messengers-reveal-their-surprisingly-busiest-time-of-year/
>>>>
>>>>      All bikes shown have thick chains, ***no gears(maybe hub gears on
>>>> one) and no apparent brakes. Hub brakes by back pedaling?
>>>>
>>>> <https://nypost.com/wp-content/uploads/sites/2/2024/09/victor-ramirez-credit-sammpicnyc-instagram-90397651.jpg>
>>>>      []'s
>>>
>>> Right, primarily fixed gear.
>>>
>>
>> I crazy dangerous job that I expect some people have no trouble taking.
>> Not me that would be crazy. Also, having road a bike for most of my life
>> and many miles I have never road a fixed great bike. Does this mean you
>> are either pedaling for not? The hub must not be a freehub or cassette.
>> In my world I have no idea how anyone could ride a bike like that, seems
>> incredibly dangerous. Do they use cleats and what is basic speed your
>> are going?
> 
> 	The way I see it, if the chain breaks you lose both the
> ability to accelerate out of trouble (as with most bikes) but also the
> ability to brake.
> 	Imagine spinning those pedals down a steep slope then some
> debris strikes your chain and "derails" it.
> 	[]'s
> 
> 	*** by "no gears" I meant no gear changing. Obviously there
> must be at least one gear.

In practice fixed gear chain is not only wider and stronger 
but since it only runs in one path (like a cam chain in an 
engine) derailment is unheard of.

That said, most urban fixed riders use a front brake, as do 
I. The younger crowd will comment, "I can stop in three 
meters!" which is fine until you have two meters between you 
and the bus.

-- 
Andrew Muzi
am@yellowjersey.org
Open every day since 1 April, 1971