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: 35 Post(s)
Tagged: 1 Thread(s)
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I assume (pardon me if I'm wrong here), that is isn't actually a bearing race, meaning the balls rin on it, but a centering cone that fits to a cartridge bearing. These can be different from the true crown races, you're used to.
Some centering cones are split, and the taper fit to the lower bearing compresses them onto the fork in a way that the split centering cone works on top. Others might be of plastic and sufficiently compressible that they can tighten without needing a split.
Either way the acid test is that it's tight enough when the headset is adjusted that there isn't even a hint of play. If you can't get rid of all the play and the fork makes any noise when bounced, or rocked against the brake, then you need to tighten the fit, or use a bearing retainer to keep it stable.
An ounce of diagnosis is worth a pound of cure.
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