Gosh, don't you wish the OP would come back and answer some questions?



I agree with Mos6502, there's a flange in there most of us are not used to seeing. Made me wonder about the bike, even if it was really a Schwinn, so after doing a little internet snooping, I came up with this picture of the entire bike.

I believe this solves the mystery. It's a super size Continental! Possibly the 26" or even the 28" model. It probably needed a very rigid BB shell to take the extra leverage caused by the long seat and down tubes.



Interestingly, the decals appear to be consistent with the '83-'85 style, but the Continental is not included in those catalogs. Here's the page from the '82 catalog, listing the frame sizes.