i met a guy named JJ in austin this weekend that had a regular hub/wheel that he removed the cassette and placed a cog on it without a nut or lock tight or anything. he said that this european guys taught him how to tighten the lockring so rediculously tight that a human couldnt get it off. something about looping it over the bottom bracket. anyways he has been riding brakeless for almost two years and it has never slipped once. i thought it was pretty tyte.