Originally Posted by
Live Wire
Yup, replace and rebraze. Welding it is out as it looks like the crack is touching the old brass.
+1 If you get brass in the weld it's shot.
On the other hand, it's already broke. You could try welding it and it it fails again, buy a dropout from BF and braze it back in.
Just remember if/when you're removing the old part, focus the heat on the part and not the tube. I'm not one to fret over HAZ as the best construction method is depended on the craftsman not the torch... but if you cook a tube, that's bad voodoo. -Chris