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From: AMuzi <am@yellowjersey.org>
Newsgroups: rec.bicycles.tech
Subject: Re: Urban cycling update
Date: Sat, 28 Sep 2024 15:58:43 -0500
Organization: Yellow Jersey, Ltd.
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On 9/28/2024 3:08 PM, Catrike Ryder wrote:
> On Sat, 28 Sep 2024 16:52:25 -0300, Shadow <Sh@dow.br> 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.
> 
> Chains are not likley to break if there's no shifting.
> 

+1.

Besides which, track chain is 8.5mm wide vs modern road 
chain at 6mm.

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