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Join Date: Sep 2001
Location: Great North Woods
Bikes: Vittorio, Centaur triple; Casati Laser Piu, Chorus Triple.
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Originally Posted by Sholto
... I've re-tightened but did not get the 'clicking' sound I usually do. ...
Assuming from this discussion that the Shimano lockring is built like the Campa one, it makes no sense at all that is is tight without the ratcheting sound. That is, the sound when ribs and grooves on two metal surfaces are grating against each other, as when proper torque is being applied.
So, if the noise is not there, then either the locking ridges/grooves have been worn off - something I doubt would be easily accomplished; or something may have become inserted in the sprocket/spacer stack that is preventing the lockring from getting to the ridge/groove interaction position in the first place.
You didn't say that the lockring came off, along with some cogs and/or spacers - is that correct? So there is no chance that an extra
spacer got in there somehow? Or perhaps some kind of foreign matter that is making the stack thicker?
BTW, the torque on Campa 10s lockrings is 50 N.m. or 36.9 lb.ft.