Haha, thanks.... I could write stuff down.... there's lots that I do know, but so many gaps in "Schwinn" history exist, at least as far as I know. I do know that the all-yellow HD in chuckz's ad is a 2013 or '14 b/c of the color, dropouts, decals....last year stuff is easy to verify. But the cantilever tigged HDs from the late 80s? Those are a mysteryto me. Might be Giant-built, might be...? It seems like they never stopped offering the Heavy Duti, but it didn't always make the catalogs in the 80s and 90s, so sometimes finding the year and other details is hard....
There was a 1980ish or so Schwinn Canti HD that was posted here recently that was marked made in Hungary. That was a new one to me anyways. I can't find the darn thread now.