DanSMeyers said:How do I evaluate my 14 y.o. steel Bianchi road bike to determine if it's safe
enough to take off the rollers and ride outside during bad weather? The frame
shows no signs of cracked paint but there is surface rust around the eyelets
for the cables on the top tube and the lugs show some surface rust along the
edges. Last year, my Cinelli XA stem cracked across the faceplate; other than
that, I've had no equipment failers and have used the bike for roller workouts
only. I'm a bit hesitant to do any long rides with it, partly because of what
happened with the stem, and partly because I don't feel I can *trust* it. Is
this silly?
The Cinelli stem is aluminum, not steel, so its failure could not have
been casued by rust.
It is quite unusual for a frame to fail as a result of rust. When it
does happen, it is almost always in the bottom bracket or chainstay
area. This is where water tends to accumulate, and it's a particularly
highly-stressed area of the frame.
When frames fail due to rust, it is vanishingly unlikely that it would
cause a crash or loss of control. The typical result is shifting
problems or autoshifting, as the partially-detached bottom bracket
starts to wiggle back and forth.
If your frame does fail due to rust, the worst likely result will be
that you will need to walk home or phone for a ride. It won't dump you
on the ground or cause any sort of injury.
Sheldon "Just Ride It" Brown
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