The top tube on a 1985 Mercian I have recently acquired seems to be slightly bowed. To the tune of about 1mm when I hold a straight edge to the underside of the tube. I wonder if it has always been this way right from the time of it's manufacture? Or the result of some form of wear and tear. Checked all my other bikes and they are all straight apart from my 1977 Gazelle which has about the same amount of rocking of the straight edge.
Will probably just live with it to be honest unless it is pointing to something sinister, although it is all I can think about at the minute!
Will probably just live with it to be honest unless it is pointing to something sinister, although it is all I can think about at the minute!
