Originally Posted by
Barrettscv
I'm researching an older Bottecchia from approximately 1970. Can anyone tell me more about the Columbus decal below? Is the tubing SL or something earlier? Rinforzati means reinforced. Does this simply mean butted? Does it imply helical reinforcements?
Columbus tubing decals did not distinguish between SL/SP until the mid 1980s. Prior to the mid 1980s, only the base of the steer tube had the helical reinforcements; the main tubes were simply butted. SLX and SPX were the first tube sets to add the helical reinforcements to other tubes, introduced in the mid-1980s.