--for future reference for anyone with locking issues with the ellipse--
-- I became very confused with all the talk on what's right what works and what/not--
I ordered a rear wheel off of CL a while back. Got it for a good price, but when he sent it he "forgot" to put the locking in it. Went to all the LBS's locally for one. NO ONE carries them.
Now, from what I've read online, here and on velo, it takes a French ring....proprietary..all that stuff. Slipping of the cog. Lots of issues. Even with the type of ring. People, includimg mavic themselves, say that the DA cog is the best.
Well. I tired may diff types of rings. But then I went to an excellent mech in dallas.( he used all these measuring tools, magnifying lenses......stuff that I didn't know mechs used.)
----here's the combo I used and I have had NO slipping. I used a EAI Gold Medal Pro with a Phil Wood locking. There was no lateral or horizontal play in the ring at all. There was NO gap between the cog and the ring, ran up perfectly against each other. Only issue, was that there were 1 to 2 threads hanging off the edge of the lockring due to the Phil wood Lock ring being so fat.
I ordered the mavic Lock Ring but won't be in for a while.