I had a Schwinn "something Sport" I think it was. I bought it new in about 74' or 74'. It had a curved down tube to create a shorter wheelbase. It was bright yellow. I could kick myself for ever selling it. I think of it often. Was just a kid then and needed the money so I had to sell it.
I still have a Schwinn Le Tour of 80's vintage but I'm not sure what year. Just put it on my trainer tonight for a change. Still, I miss my old yeller.