Quote:
Originally Posted by blsfrs
Pictures will probably lead to more guess work but here they are. Rubbing enough to cause scoring would make noise and I ain't that deaf yet. I would have thought that loose enough to deform would have been loose enough to cause perceptible vibration and my butt ain't that numb either.
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Even with the blurry pic, I clearly see a perfect circumferential cut which coincides with the failure point. Where your rear mounting screws really loose? Perhaps there was some intermittent contact with the exhaust leading up to the failure. Regardless, that's it. Doesn't take much to create a stress riser. It's like cutting glass. Sharp corners fracture easily.