Originally Posted by
Mr IGH
I would have a framebuilder braze the crack and machine the head tube so this doesn't happen again.
Originally Posted by
jeepr
Kind of hard to diagnose what I would do by looking at a picture. But I think I would braze it and give it a try. First I would need to take the headset apart and do some inspecting to see how everything appears structurally. I don't know if that is necessarily the best option. Drilling a stop and a mig tack might work better. I would need to discuss it with a welder.
Of course, if the top cup is not loose in the head tube, riding and seeing if it gets any worse may work too..
Just brazing the crack isn't going to fix it. The cup of the headset is a press fit so it
must fit tightly. The crack has increased the diameter of the headtube so the headset fit is going to be affected. If the frame is worth repair, have it repaired. If the frame isn't all that special, get a new frame. Cracked frames aren't something that you should keep riding until they fail...they've already failed...they are cracked!