Ooops look what happened to my mates hub!
Dibbs – I didn’t break the shell of my CK but I did fracture the axle. And those tooth marks on the freehub are the consequence of using a road cassette. It’s because the sprockets are mostly individual rather than multiples on a splined carrier. The torque is significantly greater and as a result the freehub gets these characteristic teeth marks.
It’s about time they started making close ratio MTB cassettes for DHPosted 9 years agoOffroadingMember
Regardless of what cassette was used – how is that going to cause the hub shell to split ? The freehub isn’t attached to the hub shell, it sits on the axel and whatever freehub system used clicks agaisnt the hub.
If anything strain on the freehub is more likely to break the freehub itself not the shell.Posted 9 years agoknott4meMember
the casette eating the freehub is common im afraid where hope is concerned.
the steel cassettes eat the freehubs like butter.
ive never seen a hub fail that severly before.
im the first to admit im not the biggest hope fan but due to a freebie recently im runnung hope hoops with pro11 hubs so we will see.
we are all aware though that if its hopes fault they sort it & quick.Posted 9 years agobigyinnMember
I suppose a bearing pressed in at an angle could over stress the alu causing it to fatigue crack in time. The rust is prob from the ratchet ring in the hub, perhaps excessive corrosion has caused the ring to expand (by rusting) against the hub shell and splitting it?Posted 9 years agoMr AgreeableSubscriber
I think the same thing happened to someone else’s hub on here, was it Gingerflash? For what it’s worth, I have two sets and never had a problem with either. I did have a struggle removing a cheap steel cassette from one but it wasn’t seriously damaged, just a few little nicks in the splines. I don’t think it’s an issue in use, only when you need to remove the cassette.
Geetee1972, SRAM have just brought out a close ratio DH cassette, the PG970 DH, although it’s built for strength rather than weight and has a steel carrier. Nice red spacers though.
Posted 9 years agoSpeshpaulSubscriber
“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)Posted 9 years ago
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