Originally Posted by
wmgreene85
I recently purchased a Masi Coltello frame and am curious to know what can cause aluminum frames to crack, as this is my first alum frame. Does going off curbs hurt the frame? Pardon my ignorance...
Fatigue caused by millions and millions of load cycles makes aluminum frames crack. The more severe the load cycles, the fewer number of load cycles the frame will withstand. The number of times you ride off a curb is insignificant compared to how many pedaling cycles you exert on the frame. Stop worrying and ride your bike.