Morwa Posted June 11, 2016 Posted June 11, 2016 Hubbers anybody that can assist me, or point me in the right direction? I'm looking for a bottom headset assembly/cup for a tapered headtube for a tapered fork steerer. The cup is semi-integrated (the cup press into the headtube, and house the bottom bearing). The internal size of the bottom part of the tapered headtube is 52mm. All the headsets that I can source have an bottom cup that fit a tapered headtube of 56mm. I cant press a 56mm cup into a 52mm headtube. Willing to buy a complete headset or just the bottom cup/bearing/crown race assembly. Your assistance would be appreciated.
droo Posted June 12, 2016 Posted June 12, 2016 That's an IS52, not semi-integrated. You'll just need a bearing and a crown race. What makes you think it's a semi-integrated? Was there a cup in there before?
Morwa Posted June 13, 2016 Author Posted June 13, 2016 Hi Droo, The bike is a 2016 Titan 650B Cruz. The bike came with a straight steerer fork (Suntour coil). There was a cup in the headtube (lower) that reduced the 52mm inside diameter of the headtube to accommodate the straight steerer. I need a cup to press into the headtube (lower end) to accomodate the bearings. It's not an integrated system. Attached is a pic of the headtube.
Morwa Posted June 13, 2016 Author Posted June 13, 2016 So I need a ZS52/40 or even an EC52/40 lower headset assembly.
droo Posted June 13, 2016 Posted June 13, 2016 The OD of the bearing that fits into that cup is 52mm, not sure how you're going to fit a ZS cup in there. See if you can find an EC52 - although this isn't listed on the SHIS, which is the standard headset identification system. The only 52mm size listed is IS52, so if your LBS has a headset reamer see if they can ream the head tube to fit a bearing.
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