BICYCLE

Unless otherwise communicated on the websites of the single events, the Eroica rides are exclusively organized for Historical Bikes and for Vintage Style Bikes as explained hereafter.
Historical Bikes (also called Bici Eroiche in Italian) are all road racing bikes built in 1987 or earlier both with gears and without gears, as those built in the late 1800’s and early 1900’s.

I don't see anything in the rules that disqualifies an 81 Japanese Schwinn.

I think a lot of the negative commenters are talking from their saddle