Originally Posted by
Kevindale
I'll try to see the full serial number tomorrow. According to the catalogs, the 1982 720/728 had 700c rims and centerpull brakes, while the '83 620 had side pull brakes and 27" wheels -- this leads me to suspect the subject bike is a 620, but then I note the long chain stays, and think 720.
Question: if the frame was meant for center pull brakes, how hard is it to substitute side pull, as might be the case here?
It doesn't matter. You can go back and forth between center and side pull brakes. You'll need hangers for center pull brakes (you don't for side pull). The 720 was sold as a frame.
Also the bike in the picture is a full reynolds 531; the 620 was only 531 main triangle. This is a 720 and the price is pretty reasonable.