anything to do with a drum-tight wheel build, ie spoke tension and a bump cracked the hub? I don't build wheels so i'm speculating.
Ooops look what happened to my mates hub!
"anything to do with a drum-tight wheel build"
no its more to do with the body being made of extruded billet thats machined in to a hub shape, whether than alloy thats forged in to a hub shape the machined. In extruded billet the molecules generally end up pointing the same way, making it very strong in one plane and not as strong in another. When you forge the shape the molecules end up being more random, thus generally strong.
Yoyr mate should take it back to the shop that sold him the wheel, his contract is with them, Hope will replace the hub body, and the shop should rebuild the the wheel. (Unless its quite old, that is)
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