Over-torqued Shimano hyperglide lockring
03-24-08, 09:20 AM
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Over-torqued Shimano hyperglide lockring
Looking at buying a second-hand Powertap from a teammate. I noticed the nuts on the axles were loose so I went to remove the cassette and found that the lockring was on there TIGHT!!!
What's the most damage that can be done if I strip this lockring trying to get it off? I may have to replace the lockring but can the threads be damaged? If it gets to the point where I have to surgically remove this thing...can it be done? I'm thinking cut into it just enough where a pair of pliers will be able to peel it out without damage to any threads.
What about applying some heat to the cassette and then trying? Try to get the cassette to expand a little might help loosen this beasty off?!?
What's the most damage that can be done if I strip this lockring trying to get it off? I may have to replace the lockring but can the threads be damaged? If it gets to the point where I have to surgically remove this thing...can it be done? I'm thinking cut into it just enough where a pair of pliers will be able to peel it out without damage to any threads.
What about applying some heat to the cassette and then trying? Try to get the cassette to expand a little might help loosen this beasty off?!?
03-24-08, 09:26 AM
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I had one that I had to remove using a Dremel and a cutting wheel. I had to replace the lockring, of course, but it didn't cause any other damage.
03-24-08, 09:48 AM
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Would be hard to heat the cassette cog without heating the lock ring as well. It is fairly
unlikely the hub threads would be damaged by overtorquing the lock ring but not impossible.
I would think you could find or rig a long enough extension to a 1/2" 24mm socket to apply
mega torque to the tool such that either it would unscrew the ring or strip the flutes off
before trying the dremel approach. If the flutes strip, you will have the dremel as a back up.
Dremel approach runs the risk of dremeling into the hub threads.
unlikely the hub threads would be damaged by overtorquing the lock ring but not impossible.
I would think you could find or rig a long enough extension to a 1/2" 24mm socket to apply
mega torque to the tool such that either it would unscrew the ring or strip the flutes off
before trying the dremel approach. If the flutes strip, you will have the dremel as a back up.
Dremel approach runs the risk of dremeling into the hub threads.
03-24-08, 10:15 AM
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Some would call this sacrelige...
Looking at buying a second-hand Powertap from a teammate. I noticed the nuts on the axles were loose so I went to remove the cassette and found that the lockring was on there TIGHT!!!
What's the most damage that can be done if I strip this lockring trying to get it off? I may have to replace the lockring but can the threads be damaged? If it gets to the point where I have to surgically remove this thing...can it be done? I'm thinking cut into it just enough where a pair of pliers will be able to peel it out without damage to any threads.
What about applying some heat to the cassette and then trying? Try to get the cassette to expand a little might help loosen this beasty off?!?
What's the most damage that can be done if I strip this lockring trying to get it off? I may have to replace the lockring but can the threads be damaged? If it gets to the point where I have to surgically remove this thing...can it be done? I'm thinking cut into it just enough where a pair of pliers will be able to peel it out without damage to any threads.
What about applying some heat to the cassette and then trying? Try to get the cassette to expand a little might help loosen this beasty off?!?
Use an impact wrench socket and pneumatic impact wrench, make sure the socket fits the lockring tool snugly.
You may need to have the impact wrench going for a bit, but it will come off, and you're less likely to bugger things up than just applying more torque.
One last thought: MAKE SURE the impact wrench is set for "remove" (counterclockwise).
03-24-08, 10:23 AM
#5
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Use a standard lockring tool, make sure it fits snugly.
Use an impact wrench socket and pneumatic impact wrench, make sure the socket fits the lockring tool snugly.
You may need to have the impact wrench going for a bit, but it will come off, and you're less likely to bugger things up than just applying more torque.
One last thought: MAKE SURE the impact wrench is set for "remove" (counterclockwise).
Use an impact wrench socket and pneumatic impact wrench, make sure the socket fits the lockring tool snugly.
You may need to have the impact wrench going for a bit, but it will come off, and you're less likely to bugger things up than just applying more torque.
One last thought: MAKE SURE the impact wrench is set for "remove" (counterclockwise).
The only thing that concerns me about using an impact wrench is this hub is a PowerTap. Not sure I want to be hitting it with power tools just yet.
03-24-08, 11:45 AM
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shouldnt matter. For removal you have to hold it with a chain whip anyway. The sudden surges of torque will brake the lockring free before "overloading" a powertap (which it wouldnt because you would be holding it).
