I am the owner of a 1980 Bianchi Rekord 748 which I obtained last year when I decided to return to cycling after being away for close to thirty-six years.
My main issue with the bike is that it has two different type of wheels. The tires fitted are Michelin Carbon 700C's. The rear wheel is of an "Aero" design while the front rim looks like it could be an original (doubtful if it is using 700C tires).
I want to replace the rear "Aero" type rim with a replacement that closely matches the front, but I have been unable to find any specs on the original rims fitted to the bike.