Joined: May 2008
Posts: 10,106
Likes: 2,762
From: Fredericksburg, Va
Bikes: ? Proteous, '65 Frejus TDF, '73 Bottecchia Giro d'Italia, '83 Colnago Superissimo, '84 Trek 610, '84 Trek 760, '88 Pinarello Veneto, '88 De Rosa Pro, '89 Pinarello Montello, 'Litespeed Catalyst'94 Burley Duet, 97 Specialized RockHopper, 2010 Langster
There doesn't appear to be an authority who can answer the question definitively. That's fine with me. There has been debate about the cut off being 20 or 25 years. I am not sure that time is the right criteria for determining the answer. We all have our perspectives of what the critiera are and how we weight them.
An engineer would break the problem subject down into parts and determine the answer by parts, i.e. what would you consider a C&V frame? What characteristics must it have/not have?
tubing - which onces?
Lugs - which ones?
Seat cluster configuration - most notably fastback seat stays vs socketed like the mid 80's Treks (applies to DO's too).
Internal tubing for brake lines or shift lines - yea/nay
Braze ons - which and where or none
Drop outs - Style or manufacturer
Dimensions - Almost dictated by intended use but even then there were variations driven by the time period and the general trend.
Paint - an example is the 80's and the crazy paint schemes most notably Colnago's
Chrome - all, part or none
Then we can discuss the fork.......
__________________
Bikes don't stand alone. They are two tired.
Last edited by SJX426; 07-29-15 at 07:35 AM.