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Old 03-20-17, 12:09 AM
Non omnino gravis
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This thread fails to address the correct issue, as most threads of this sort do here on BF. In the contexts of cycling, time is immaterial. To say that a frame might last 20, or 50, or 100 years is meaningless. Buy it, hang it from a rafter in the garage and that frame will last until the next ice age and beyond. Mileage, or service life is the important statistic. My grandfather rode the same frame for 60 years-- which is immaterial-- but he also put in excess of 250,000 miles on it. That number is telling. I cracked both chainstays on an aluminum cross frame in just two years... but put almost 22,000 miles on it in that time. Did it fail before it's time? I can't say. I feel like I got my money's worth out of it.

Will a carbon frame survive more miles than aluminum, or titanium, or steel? Yes and no. Who knows. That said, in the distant future, do I expect to see guys riding carbon frames with 200,000+ miles on them? That seems to me highly unlikely.
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