Originally Posted by
hhabca
Which of the 4 digits in the SN gives the year? It's a 6 speed 105 index shifting bike, but with Uniglide freehub, so my guess was 86, but maybe it's 88 as there is an 8 in the SN, but no 6 or 5.
Is that tubing butted at all? I think the main tubes are Cr-Mo from the sticker, but I can't read if it's butted or not. I'm on the heavy-ish side (190lbs) so a mid-level bike is a good fit for me as far as tubing thickness goes.
The four digits have nothing to do with the year. There should be another two characteracters, one a letter and the other a number. Usually they are on the opposite side of the bottom bracket and sometimes at right angles.
A 1985 or 1986 would not have had Formula II, which is a mixed tubeset. The main tubes are butted. 'Tre tubi rinforzati' = three tubes butted