can the chainline be a problem when building a fixie

[malaka]

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

[darkhorse75]

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.

[drubie]

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!

[HappyHumber]

Trial and error FTW!

+1
But you do take all the magic out of it, Droobs....

[aaron]

Yes it can