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I guess its the steel flexes more than the alu, which after repeated stressing cracks and fails.
Obviously combined with my awesome power....or more realistically my fat ass & London's roads being as smooth as the surface of the moon. And that bike has done 200 miles of London's roads this week so has had a hard week.
Bike has 28c tyres too so its not like I'm loosening my fillings riding around on 23c's
And Columbus SL is the flexiest steel of my bikes, so I guess its stressing the alu cages more than my other bikes. As I said I've broken a few alu cages on this frame, have broken another alu cage on a Columbus SLX frame, but have never broken an alu cage on any of my stiffer Max frames.
user75204
How.. does this happen?