Nemrod wrote:Yo, Connoisseurs of Conshelfs, I see the old black neoprene diagrams, the semi clear natural silicone diaphragms, the grey silicone diaphragms and now I think they are the black silicone. Forget the neoprene jobs, between the grey and the black, is there a functional difference?
Hey, I am trying to build a kick azz Conshelf here, what elese can I say
Nem
Hi Nemrod... building a "kick azz" Conshelf should be pretty routine if you get the right components. I have all the different diaphragms you mentioned, but I never got around to directly comparing them on the same reg, mainly because whichever one that I picked up first seemed to work just fine anyway. However, I'll bet that there is actually some slight difference when measured on the test bench.
If I were working on my own Conshelf again to use myself, I would go through all the diaphragms you mention, but I have enjoyed my MR-12 III so much that I just stick with it.
The newest available from AquaLung seems to be the black one with a plastic disc. It seems very flexible, but I was a little put off by the plastic disc, so haven't actually tried one. Ha, it might even work the best. Wanting to keep mine as original as possible, I used a diaphragm with the metal plate... but admittedly just picked a gray one without testing the others.
If you don't have the full selection available, tell me what you lack to test them all, and I will be glad to help you out with some loaners for the experiment. (I would do it, but since this was your idea, you deserve the honors for test results)