Broken Campagnolo Crank

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Campagnolo "Grand Sport" crank, failed near pedal eye, at the end of the vanity groove.

Crank failed after less than three years of vigorous use by a rider weighing about 80 kgf.

Failed while climbing a hill; rider was thrown suddenly to the ground.

Rust on the pedal portion is due to sitting in rusty water and was not present at the original failure.

"Beach marks" indicate a crack progressing from the outer face to the inner until the section was reduced enough to cause sudden failure.