Joined: Apr 2010
Posts: 13,495
Likes: 924
From: Boston-ish, MA
Bikes: 72 Peugeot UO-8, 82 Peugeot TH8, 87 Bianchi Brava, 76? Masi Grand Criterium, 74 Motobecane Champion Team, 86 & 77 Gazelle champion mondial, 81? Grandis, 82? Tommasini, 83 Peugeot PF10
About that "crack", I think Bikedued might have the right of it. In the OP's earlier posting the big pic shows it to have a highly regular in-out-in-out pattern that would not be expected from a crack.
__________________
Real cyclists use toe clips.
With great bikes comes great responsibility.
jimmuller