Stans rear hub slipping

tonyride

tonyride

Don't piss off the red guy
In the middle of my ride last night on the Marty's trail at Dickerson Mine the Stans hub on my bike started to slip. At first, I thought the rear tire was slipping on mud because as I was pedaling it felt light all of a sudden, but I wasn't going anywhere. I looked at the trail and it was bone dry and I know I wasn't rooster tailing so the wheel wasn't sliding on the dirt. I hopped back on and as soon as I tried to pedal I was able to turn the cassette but not the wheel. I got off and tried to crank it by hand while holding to the wheel still but I couldn't do it so there's still some grip or friction. The cassette wasn't freewheeling like it would if you were backpedaling. So I walked back to the start of Marty's trail and put the bike on the work stand (pictured) and looked to see if anything was off like maybe the axle may have come loose or the cassette was misaligned somehow but it all seemed fine. I held the wheel and tried to hand crank it again and I was able to get it to slip and it felt smooth, not notchy so I don't think it's the pawls. What do you all think could be the cause? I'll be taking the hub apart this weekend but any guesses?
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tonyride said:
In the middle of my ride last night on the Marty's trail at Dickerson Mine the Stans hub on my bike started to slip. At first, I thought the rear tire was slipping on mud because as I was pedaling it felt light all of a sudden, but I wasn't going anywhere. I looked at the trail and it was bone dry and I know I wasn't rooster tailing so the wheel wasn't sliding on the dirt. I hopped back on and as soon as I tried to pedal I was able to turn the cassette but not the wheel. I got off and tried to crank it by hand while holding to the wheel still but I couldn't do it so there's still some grip or friction. The cassette wasn't freewheeling like it would if you were backpedaling. So I walked back to the start of Marty's trail and put the bike on the work stand (pictured) and looked to see if anything was off like maybe the axle may have come loose or the cassette was misaligned somehow but it all seemed fine. I held the wheel and tried to hand crank it again and I was able to get it to slip and it felt smooth, not notchy so I don't think it's the pawls. What do you all think could be the cause? I'll be taking the hub apart this weekend but any guesses?
View attachment 259112
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The ratchet ring is slipping in the hub body
 
tonyride said:
In the middle of my ride last night on the Marty's trail at Dickerson Mine the Stans hub on my bike started to slip. At first, I thought the rear tire was slipping on mud because as I was pedaling it felt light all of a sudden, but I wasn't going anywhere. I looked at the trail and it was bone dry and I know I wasn't rooster tailing so the wheel wasn't sliding on the dirt. I hopped back on and as soon as I tried to pedal I was able to turn the cassette but not the wheel. I got off and tried to crank it by hand while holding to the wheel still but I couldn't do it so there's still some grip or friction. The cassette wasn't freewheeling like it would if you were backpedaling. So I walked back to the start of Marty's trail and put the bike on the work stand (pictured) and looked to see if anything was off like maybe the axle may have come loose or the cassette was misaligned somehow but it all seemed fine. I held the wheel and tried to hand crank it again and I was able to get it to slip and it felt smooth, not notchy so I don't think it's the pawls. What do you all think could be the cause? I'll be taking the hub apart this weekend but any guesses?
View attachment 259112
Click to expand...
is it an older neo hub? Stans has been pretty awesome at replacing these with newer mpulse hubs when I have had issues. I would get in touch with them, they have been stellar with replacing things for me....and I have yet to seen any issues with the newer style hubs
 
UtahJoe said:
is it an older neo hub? Stans has been pretty awesome at replacing these with newer mpulse hubs when I have had issues. I would get in touch with them, they have been stellar with replacing things for me....and I have yet to seen any issues with the newer style hubs
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Cool. After I take it apart and see what the issue is then I'll reach out to them.
 
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Could just be the pawls sticking or springs worn out.

You don't know until you pull off the freehub.
 
Ooof I had 2 walks of shame from Stan's hubs shredding themselves to death. When that happens, just rebuild them with DT 350's and forget it happened.
 
Cassinonorth said:
Ooof I had 2 walks of shame from Stan's hubs shredding themselves to death. When that happens, just rebuild them with DT 350's and forget it happened.
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I think I may just end up doing that. The more research I do the less confident I feel about this even before taking it apart. BTW, it is a Neo hub.
 
So I took the hub apart and indeed it is the ratchet ring rotating inside the hub body. All 6 pawls and the teeth on the ratchet ring are fine. I guess I haven't seen enough hub internals but the ones I've seen until today all had the ratchet ring keyed into the hub so I just though that's how it is. The hub is toast. I contacted Stans and they had me fill out a warranty claim form which is a non-starter because I don't have any of the documentation they need since I bought the wheelset used. So now I'm on a search for a rear wheel.
 
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