Originally Posted by
Andrew R Stewart
Looks like an overheated joint that finally developed a crack after many miles. Many Asian frames of this era were made with automatic brazing stations. Ironically Mangalloy was brought out to better handle the production brazing at a lower cost than the top level tube sets did. The two color paint job will be expensive to duplicate or touch up (which i don't suggest as tints are very hard top match well). The only good aspect I see is little dislocation of the cracked tube ends. Andy
Thank you, Andrew and thanks to all of the others who posted in response to my question. I don't know how that photo of my damaged frame got uploaded because the website denied me when I tried. I live in northern Illinois. If anyone can recommend someone in this area whom I could contact about doing the simplest fix, a brazed on sleeve, I'd be most grateful.
If it should come to that, I think that a repaired frame this old should look like one, sort of the bicycle equivalent of an old war wound, healed over, so I would not expect to spend a lot of time and money disguising the repair.
Again, thanks to all.