Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Mentioned: 57 Post(s)
Tagged: 1 Thread(s)
Quoted: 2085 Post(s)
This is analogous to threadless headsets in that the cassette must overhang the body so the lockring can tighten it down before bottoming on the body.
If it does overhang but you still cannot tighten it, it's possible that the lockring's threaded portion is too long for the freehub body and keeping it from tightening all the way. Test by removing the cassette and seeing if the lockring threads in until it's face bottoms out. If not, (more common than most people think) you need to find a shorter lockring, or carefully grind this one down a bit.
If you cassette stack is shorter then the freehub body you need a spacer, whether the literature mentions it or not (unless you forgot one from the cassette). Add the right width spacer behind the cassette and you should be OK.
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