Originally Posted by
kroozer
To me there is nothing sacred about original gearing if it's a bike you intend to ride.
The reality with this particular model, the Raleigh Professional of the early 70's, is that
None that we sold in our high volume old line shop were not modified to meet customer requirements. This was a Racing bike sold almost exclusively to Racers of the era who were correctly concerned with their fit & function.
The most common modifications were for fit, usually by installing the proper Cinelli 1A stem & 64/66 bars for the rider paired with larger/smaller Christophe toeclips & Binda straps. Drivetrain modifications were almost universal as straight blocks for Criterium/TT racing and a wider FW for training and road racing were paired with chainring changes to suit the rider. The OEM wheels were not a thing of beauty or reliability, quite often they were re-built w/ butted spokes and Mavic or Fiamme rims of a proper weight for the rider. The OEM tires were replaced with "race rubber" if the wheels were re-built to competition spec as well.
My point is that the Pro in the catalog was not the Pro that the customer rode from our shop, could have been different elsewhere.
I still have the 144BCD SR Royal course specific chain rings in 54/50/48/45 for my '74 MKIV in my parts box.
-Bandera