This is my mid 80s Duell 531P
The bike originates from before Jan (van Dalen, the builder) started giving names to his various models, but it is built with 531 Professional tubing, so I simply call it 531P.
The picture shows the bike pretty much as how I got it a month or so ago. I only changed the dirty white tape for Pelten white-blue fade tape. The age of the bicycle I derive from frame construction details and parts. Groupset is Nuovo Record with c-Record brake levers and Simplex shifters. The Campagnolo Atlanta 1996 rims are of course a decade younger.
The bike is very light and will be even lighter when I have added the new wheels
I have period correct wheels ready for it: smooth Ofmega cartridge bearing hubs laced to Mavic G40 rims.
Maybe I consider 1 or 2 more modifications. Going for Record Deltas could be one of them. Would result in a slight weight increase again however.
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