Insane Bicycle Mechanic
Join Date: Mar 2008
Location: other Vancouver
Mentioned: 1 Post(s)
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Originally Posted by therentedmule
Is my hub shot or is there something I can do to get this bad boy back on the road?
I'd take the hub apart and find out what failed, but it's probably not going to be good. I'll bet that you'll be replacing the cassette body at very least.
FWIW: I had a Frankenstein hub (early XT shell, 8-speed Hyperglide body) fail this summer. It wouldn't stay adjusted (like yours), but it started jamming and pushing the chain forward while coasting. Since I was on a supported tour in the Canadian Rockies, not coasting wasn't an option. When I got to the water stop, I handed the rear wheel to the mechanic and told him what was up.
He took off the left cone, and the hub came apart. The cassette body had split in the middle, dumping zillions of bearings, the cogs, and assorted shrapnel on the ground. He swapped my cassette on to a spare wheel and sent me on my way. When I made it to dinner that night, he had already bought a cassette body in town and had my wheel repaired. I finished that tour without further incident.
A week or two later I notice that the cassette looks loose on the hub again. I wiggle things around, and the cassette body won't stay aligned on the hub. I'd guess the body was never tight enough on the hub shell and developed enough wiggle to enlarge the threads in the shell. Riding on the hub that way stresses the cassette body and eventually causes it to break internally.
I still have the pieces- one day I need to take pictures.
Comcast nuked my web page. It will return soon..