Joined: Oct 2012
Posts: 1,260
Likes: 105
From: Twin Cities, Minnesota, USA
Bikes: 2017 Salsa Carbon Mukluk frame built with XT, 2018 Kona Rove NRB build with Sram Apex 1,2008 Salsa El Mariachi, 1986 Centurion Ironman
My guess is the weight is in the wheelset. I have a '91 Team Miyata with HED Bastognes and it's comparable to the cf bike it replaced.
Edit: didn't see at first that it's a 1981, probably heavier than a 1991, but not by a lot.