rear cassete problem

[gettingintoit]

Hi .. I wasnt sure where to put this thread so I whent with here . The problem I am having is the bearing cone in my cassete keeps on tightening itself making the freewheel not work causing my chain to drastically slacken and leaving me with no pedal power for about three turns .... Does anybody know what might be wrong

 

[fossyant]

Freehubs (shimano) do have a bearing race for the axel, so I'd undo non-drive side, take out axel. Then make sure the drive side cones are very tight. Re-grease and then take slack up from non-drive side and nip up tight.

I only ever work on hubs from the non-drive side - makes life easy when adjusting.

Might be worth removing the freehub (10mm allen key) and running WD through then some light oil.

 

[gettingintoit]

its not a freehub its a freewheel (screw on type)

 

[gettingintoit]

and i have gave it a few liberal dousings in gt85 ( much bettwer than wd)

 

[Ticktockmy]

Hi .. I wasnt sure where to put this thread so I whent with here . The problem I am having is the bearing cone in my cassete keeps on tightening itself making the freewheel not work causing my chain to drastically slacken and leaving me with no pedal power for about three turns .... Does anybody know what might be wrong

Your post does not make sense to me, in my mind if your cones are tighting up, then it make me think that you are not tighting your lock nut up tight enough on the axel, I cannot see what the freewheel has to do with the cones, as they just adjust the tension in the axel. maybe I am just losing the plot..lol

 

[gettingintoit]

if you dont know what im talking about your not the man to answer my question .. however there cassete has its own seperate cone .. the bearings sit inside the freewheel and are then tightened by a cone type device ontop of that

 

[gettingintoit]

also in response to maggots post im very mechanically minded i just cant think of what it is thatt could cause the tightening ... i have never had this problem before

 

[lukesdad]

Mmm trying to get my head round this one, by cone do you mean the end cap that holds the bearings in place ?

 

[lukesdad]

Mmm trying to get my head round this one, by cone do you mean the end cap that holds the bearings in place ?

If this is the case and it is tightening, the only thing I can think of is, wear inside the hub causing it to tighten and engage the freewheel intermintandly.
Depending on the hub serviceing is a bugger if you can get the parts, you could try giving it all a clean but putting it all back together is a bugger! So the other options are removing the freewheel and replace with a new one, or a new wheel with freewheel attatched.

 

[gettingintoit]

yh the end cap ... its hidden behind the smallest cog ... can the smallest cog be removed or is it just new freewheel time

 

[lukesdad]

Can I just ask, how you know the end cap is tightening ?

 

[PpPete]

FWIW I had a freewheel hub (that I put a single fixed sprocket on) that kept undoing itself. Didnt matter how tight i got the locknut down on the cones, a few hundred yards down the road and the cone would be loose on the axle again. This only happened when I put a solid axle in it. When I changed it back to the original QR (which is not the done thing on fixed) eveything stayed in place and worked just fine. Doesnt really help the OP - just to illustrate that there are circumstances where cones will move of their own accord for no obvious reason and despite the locknut which is supposed to prevent movement.

 

[RecordAceFromNew]

Hi .. I wasnt sure where to put this thread so I whent with here . The problem I am having is the bearing cone in my cassete keeps on tightening itself making the freewheel not work causing my chain to drastically slacken and leaving me with no pedal power for about three turns .... Does anybody know what might be wrong

I am not 100% sure, but doesn't the small cog stops the outer "cone" moving out while perhaps a shim (between the "cone" and inner freewheel body) stops it moving further in causing the bearings to bind? If bearings are binding then perhaps it is gunge or worn-out bits. A thicker shim can probably be made up using a wire of the right thickness. On the other hand, freewheel not freewheeling intermittently could be issues with the pawls between the inner and outer freewheel body and not a cone issue.

 

[gettingintoit]

sorted this problem people i took the freewheel off the hub and serviced it .. found a very small stone in there that was causing the ring to spin and tighten the bearings too much ... removed the stone regreased and replaced with new bearings ... problem solved ... thanks for all the replies

 

[lukesdad]

Well done.