Join Date: Dec 2005
Location: Central Valley, California
Bikes: Pinarello (2002), Specialized Allez Compe (2000), Specialized Expedition (1983), Zebrakenko Touring (1983), Specialized M-4 Stumpjumper (2001)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Those vintage Mercian's are beautiful. You'll have to share some pics when you've finished building it up.
The Sugino xD 600 crankset is a very nice piece with 46x36x26 rings. Best price is at Lickton's Bikes
For the BB, go with Shimano UN-53 or UN-73, (assuming the Mercian has "English" threading). Be sure to measure before you order. I'm thinking it will take a 68mm x 113 mm, but that is only a guess.
The vintage Suntour Cyclone GT or Cyclone M-II GT derailleurs easily handles 34-tooth rear cogs. They are among the best shifting changers ever made. Available on ebay.
I also like the vintage Suntour Barcon shifters for touring. Also available on ebay.
I'm not sure about which freewheel to suggest with the Campy hubs. Probably a Regina. Ask your LBS if a Suntour or Shimano will fit those hubs. Sorry.
Hope this helps a little,
Central Valley, California