Mon Mar 11, 2013 9:36 pm by Altashot
Strange collar. Never seen one of those. I get what you guys are saying but If it IS indeed what those rings are for, I find a big flaw with it right away. The purpose of a ring it to spin free as to not twist the cylinder in the event that a pipe wrench or similar device does get a hold of it even though its tapper and/or thin edge deter that. Those rings in question here, supposedly hold the rim cylinder the right way? That would now means that the cylinder WOULD turn WITH the collar and could defeat, let's say, a Panic bar. It is no longer free spinning...IMO, not a good idea. On the other hand, maybe when everything it tighten down, it grabs the inside of the door shell, aluminum or steel, and prevents turning the collar itself...? ...I doubt that.
M.