can the chainline be a problem when building a fixie

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can the chainline be a problem when building a fixie

Postby malaka » Mon Jan 03, 2011 1:21 am

I am thinking of building a single speed bike myself (with all the good new frames/parts available on the internet)

I have pulled apart many bikes over 20 years and have a good mechanical aptitude

but i am not sure about the chainline and how you line up a front spocket with rear cog

are most popular sprockets/cranks similar offsets?

or will i just have to trial and error with spacers on the rear axle?

thanks
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by BNA » Mon Jan 03, 2011 1:47 am

BNA
 

Re: can the chainline be a problem when building a fixie

Postby darkhorse75 » Mon Jan 03, 2011 1:47 am

Most track hubs will give a chainline of about 42mm give or take a mm, your job is to come up with a bottom bracket length and crank combo that comes as close to this as possible. easy.
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Re: can the chainline be a problem when building a fixie

Postby drubie » Mon Jan 03, 2011 5:19 pm

darkhorse75 wrote:Most track hubs will give a chainline of about 42mm give or take a mm, your job is to come up with a bottom bracket length and crank combo that comes as close to this as possible. easy.


Where's the fun in that? I thought it was supposed to be trial and error, a bag full of mis matched parts you found / ebayed / scored from the tip etc., some spare time, some spacers, a spoke tool and a set of cone spanners. It's impossible to take more than 15 minutes to get a working chain line even if you're using re-purposed road parts, as long as you know how to true a wheel and can adjust a bearing cone.

Trial and error FTW!
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but really, that's rubbish. We get none of it because the choices are illusory.
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Re: can the chainline be a problem when building a fixie

Postby HappyHumber » Mon Jan 03, 2011 5:37 pm

drubie wrote:Trial and error FTW!

+1
But you do take all the magic out of it, Droobs.... ;)
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Please don't assume I'm on Facebook.
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Re: can the chainline be a problem when building a fixie

Postby aaron » Tue Jan 04, 2011 12:26 pm

Yes it can
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