- May 1, 2002
Interesting note: the Aleph 2x123 battery tube I just bought has the ring of metal behind the O-ring that seals against the head, and the head seats against that ring, so there's already a precedent for that part of my re-design.
I guess I failed at trying to point that out in a post above. Yes, there is a hard stop in some of these and without the spring as you suggest, it can be dicey having two stops need meet at the same time. I intentionally reduced the diameter behind the O-ring so that the only collision would be that of the battery tube contacting the ground plane of the LE (or LM if it were an incandescent). This may be new and fresh for you but some of us have a number of years involved with the E-series and its geometries.