i think you can get phil wood track lockrings with a campy thread.
>From: "CyclArt Shop" <email@example.com>
>To: "Wayne Davidson" <firstname.lastname@example.org>,"CR List"
>Subject: RE: [CR]track hub lockring size required
>Date: Tue, 11 Sep 2007 14:59:00 -0700
>If the lockring on your Campagnolo hub was a BB lockring, then it was a
>hub, not a track hub. English BB and freewheel thread is the same (1.37" x
>24 tpi.) Track lockrings are always smaller than the cog thread, and ALWAYS
>Campagnolo uses their own lockring thread, and I don't believe anyone else
>uses it. It is 1.32" x 24tpi LH thread.
>Most track hubs are English thread. They use a 1.29" x 24 tpi LH threaded
>French are 33 x 1.0mm LH thread.
>If you can't find a track hub but want to ride a fixed gear, you can often
>fit a BB lockring over a cog on a freewheel hub, and respace the axle to
>right chainline. Loctite or equiv. is a good idea with this setup, and so
>a rear brake. It seems to work ok as long as you don't try to stop with
>pedal pressure. If you spin off your cog doing so, you will be in a world
>Vista, CA USA
>[mailto:email@example.com]On Behalf Of Wayne
>Sent: Tuesday, September 11, 2007 12:16 PM
>To: CR List
>Subject: [CR]track hub lockring size required
>Hi all, I recently bought a Campagnolo rear track hub, the lockring was a
>lockring. I'm not in need of another one, and dammed if I can find a
>lockring that thread in my collection. Then I recently ended up with a
>Sunshine hub, looks just the same as a Campagnolo, without a lockring, so
>this time I measured the thing, well now I see a probelm, its 33mm in
>diameter, what BB uses that size?, I've checked archives with no luck, just
>looking for a cheaper version than the Campagnolo lockring for my
>fixie.......regards wayne davidson Invercargill NZ...........
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