Originally Posted by
verktyg
verktyg
ADDENDUM:
Took a close look at the frame in question... It appears that someone put indentations into the chain stays for crank arm clearance rather than install a wider BB spindle. Prime area for failure, especially in aluminum!
Fine example of the work of a ham fisted hammer mechanic!
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Those indentations are a feature of Cannondale frames. Never seen a failure in those areas....