recently got this...
Schwinn Sting frame set. 1987 (I think)...full chromoly, original decals and smoked chrome finish.
5" headtube, tapered (& capped) forks, the (top & down) tubes are flared by headtube. the lower part of seat tube flsres out at bottom bracket.
I'm not too knowledgable on this model Sting. Can anybody drop some science...