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Old 11-07-11, 12:58 PM
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Originally Posted by triplebutted View Post
Aluminum frames have a nasty habit of not showing any signs and then all of the sudden "bam!". Its part of the way aluminum is.
Unfortunately it's also 'part of the way' all other bicycle frame materials are. My only personal experience is with two of my steel bikes. Neither gave any useful warning before failing suddenly. So far the frame that has lasted the most miles of any of mine is my only aluminum frame - a Cannondale made in '89 with over 110 kmiles.

There's certainly a risk with any used bike since you don't know much about its previous history. But then even a new bike can have hidden defects that lead to premature failure.
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