I was about to pull the trigger on one of these for my commuter; does anyone have any experience?
Tange Sealed OPC BB
http://www.natsukashi.jpn.com/en/sit...s/819_1716.png
This is the same unit as the old Tioga-branded one, which are very scarce now. Even the Tange-labeled ones are getting harder to find.
Gusset makes a version, too:
http://www.universalcycles.com/image...dium/48105.jpg
I was going to install one on my Worksman BMX/Trails bike (which now has sealed bearings all around), but I ended up going 3pc instead. I figure it'd be a cool upgrade for my commuter, even if the CB hub and the headset are still loose-ball. (I'm running fenders, so the headset stays lubed and clean for a good long time. The Velosteel, on the other hand, is a bit of a repack-diva.)
-rob