• Had a good rummage around the database and some other threads, but not had much luck!
    I am currently running messengers on an unknown bb (I presume 103) to halo aerotrack rear wheel.

    Im thinking of upgrading to sugino 75 cranks, and I realise I need to get a new BB

    I know that the hub/cog combo I have is a 42mm chainline, so my question is:

    What bb can I use to achieve a 42mm chainline with sg75s?

    Sorry if this seems a little basic, BB stuff has always just confused me!

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Advice needed- switching from messengers to 75's- chainline question

Posted by Avatar for chewish @chewish

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