For all you frame gurus out there-
I've got a 2002 bianchi diss. Background info - I've ridden it fair amount over the years (since Oct 2002), I'm a relatively lightweight (~160lbs) endurance/XC type rider. It's spend most of it's life with a rigid fork riding mid atlantic singletrack (think roots and rocks).
Recently when I'm up and out of the saddle pushing hard on it, i'm getting some light rear brake rubbing (which has never happened before). I even swapped out a different rear wheel thinking maybe the rear wheel needed a good truing/tightening (it was spot on tension wise). Brake rotor is perfectly true and brakes are all tightened down properly.
So assuming it's not the rear wheel or the brake itself - is it possible for an aluminum frame to begin to soften up over time? I've heard rumors that this can happen but wonder if any of you have had the same experience in an aluminum frame?
If it is noode-izing, should I be concerned about sudden frame failure (given the properties of aluminum)?
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