Originally Posted by
bobbycorno
??? SL and SP were identical quality, identical alloy, the only difference being wall thickness. SP was .1mm thicker and intended for larger frames. And
AFAIK, all Columbus tubing of that era (early 70's) was CrMo. Aelle, Zeta, and all the other lesser alloys came along later.
SP
Bend, OR
I was merely pointing out you were apparently making an assumption - I'm about the last guy on Bike Forums to get too caught up in what's on the tubing sticker, which I think many posts of mine will back up. The quality of the material is of course the same; the ride quality could of course differ - for either the better or worse, depending on the frame size, rider, etc. It was also of course common for many builders to use SP on larger frames, but this wasn't automatic or always the case.