Hi all
I recently bought a 70's/80's Duravia "Type Grand Tourist(e?) [the decal is peeling off at the end so not sure about the last 'e'...!]. It's got a Stronglight 50 (3 arm) chainset/Stronglight TS crankset; and a close ratio 6-speed cassette at the back, on 120mm spacing.
The chain keeps...