My girlfriends SM is a 51 cm 1st generation (pearly blue). AFAIK, besides the color change (to tiburon blue), the only other changes from 1st to 2nd generation San Marcos are to the fork: new fork legs with a more "classic" curve, and mid-fork eyelets, a la Riv.
I don't believe there were any other changes to geometry or clearance between the generations. The 650b and 700c San Marcos frames each have different tire clearances. The 650b fits a wider tire (stated clearance 38 mm) than the 700c (stated clearance 35 mm). In fact, the 650b still has pretty generous room with 650 x 38 tires, enough for 38 + fenders or for a 650 x 42 tire (Hetres at least, which don't have the extra thick tread of the Fatty Rumpkin). Cheers, Tim On Thu, Jan 7, 2016 at 5:06 PM, A CT Cyclist <amee.1...@gmail.com> wrote: > Tim what year is your girlfriend's San Marco? It looks like the tire > clearance has gotten wider than the first editions were. Mine is a 2012, > at that time the stated clearance was 35 mm without fenders, 33.3 mm with. > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.