could you please picture the crack?gt_lover":1s9tdlrf said:Hi. The frame's given up at the weld at the bottom of the seat tube/bottom bracket shell (73 mm). The crack has run about 3/4 of the way around the the circumference of the tube at the top of the weld. I presume that it's just fatigue from tens of thousands of hard-riding miles. I run slick tyres at high psi for commuting to work, so the frame will be stressed more than running big volume tyres. I'm still riding it, but will have to scrap the frame soon.