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dubtap
Ok I'm looking for relief from anxiety and confusion. I've established that my all city big block (size 58), which I really like, has stack ~595mm and reach ~420mm. The top tube is 585mm. The seat and head tube angles are 74 degrees. Ok, fine. But now I'm looking at geared bikes and for instance a surly straggler size 60 has a stack of 609mm and reach 412. So pretty close. But the top tube is 610mm, ie 25mm longer than the big block. Is this due to the slacker seat and head tube angles of 72 degrees? And, my real question: can I really trust the reach measurement and disregard the top tube length?