Joined: Sep 2005
Posts: 3,003
Likes: 303
From: Hervey Bay, Qld, Australia.
Bikes: Colnago (82, 85, 89, 90, 91, 96, 03), 85 Cinelli, 90 Rossin, 83 Alan, 82 Bianchi, 78 Fountain, 2 x Pinarello, Malvern Star (37), Hillman (70's), 80's Beretto Lo-Pro Track, 80's Kenevans Lo-Pro, Columbus Max (95), DeGrandi (80's) Track.
I think the first thing to do is settle on an approximate build date - I'm suggesting pre Master which would be 1983/4/5. Colnago obviously designed the frame with the unusual RHS exit hole for the brake cable housing. I think it's a safe bet that this was no mistake. I would be looking for a 'top-end' brake set from that era that would suit a RH brake cable/housing exit hole. I'm suggesting Shimano 105 Golden Arrow. Shimano was making great advances in the bike component world at the time.
Shimano used centre pull brake callipers for their Dura Ace and 600 group sets around that time (I think). I'm definitely not an expert in all things Shimano. Centre pulls would also work with either LH or RH exit hole placement. The exit hole is well down (3 to 4 o'clock) on the top tube which would create a sharp bend in the cable housing from exit hole to brake calliper if centre pulls were used thus my 105 Golden Arrow suggestion.
I think Colnago would have been developing their internal brake cable/housing techniques/technology at that time in preparation for models like the Master Piu.
My recommendation: If it was my frame I would be looking to build the frame up with a Shimano 105 Golden Arrow groupset and be satisfied that it is a Master prototype/design exercise.
Wow- big statement - what do others think?
Last edited by Gary Fountain; 01-27-15 at 05:56 AM.