1974 Mercian Vincitore - did two cross-US tours on it. The latest in 2004. Also have a 2005 Cinelli Super Corsa, full Campy Chorus, my dream bike.
2005 Cinelli Super Corsa top tube frame crack
I'd like to get some insight on what I'm possibly dealing with here. I purchased the Cinelli in '05 with full Campy Chorus. Rides like a dream. I've babied this bike from the day I got it - no crashes, and it's only fallen over one time. Not to say I've not ridden it, I'd guestimate there's about 5k miles on it now. Last year I got seriously motivated and completed two double centuries on it as well, so it got loads of training miles last year.
However, about three months ago, I noticed a small crack forming in the paint on the top of top tube, about 1" ahead of the seat lug - maybe 1/4" ahead of where the rear brake cable exits the frame. It started at the top of the tube and has gone around the circumference roughly 3/8 to 1/2" now.
I'm continuing to ride it since I'm training for another DC in two months. The crack is maybe 1/8" longer from where it first appeared (I'd marked it with a Sharpie to track it)
I'm 90% sure it's not just superficial - paint just doesn't crack like this.
At this point, I'm just looking for some guidance. Send to a frame builder for a brazing touch up and repaint on the top tube?
Cinelli says there's a 2-yr frame warranty, but I'm sure that applies more to the carbon stuff they make - there's got to be a bit more allowance for a steel frame with no signs of abuse. I can't strip the frame down right now since I need it to train for the DC (and a century in mid-Oct prior to it), so I figure I'll just keep riding until things get seriously out of hand.