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On Tue, 11 Oct 1994, A.APPLEYARD wrote: > From: "Dr. S.G. Millard" <ec96@li*.ac*.uk*> wrote on Mon 10 Oct 1994 19:09:47 > +0100 (BST) (Subject: Sherwood 'Genesis' manifold..UK use):- > > A more general question to other 'Genesis' users...How easy is it in > practise to shut off a free-flowing regulator and open up the cross-over valve > ? I am not a contortionist and with a drysuit + all the other 'paraphanalia' > of cold water deep diving I imagine it might be pretty well impossible to > reach over the back of my neck to turn the two valves off/on. I also imagine a > fair amount of mental effort (at depth) would go into working out which way to > turn each valve. Is this a real problem..or trivial with practise? > > Trying to turn your own air on or off by reaching over the back of your > neck!? Forget it! I could about manage it in the 1960's, with a thin > `Submarine Products' cylinder strapped directly to my back without a backpack > frame; but with a backpack or a thicker cylinder, or a lot of shoulder muscle > - no way. Um, this certainly depends on the individual. Even with arthritis, and being somewhat overweight, I can reach back and turn the air in a center mounted tank on and off. It is certainly something that you should do yourself as a drill before you need to do it. I have a manifold system that I bought from Diver's Supply, which I believe is the same one that Dive Rite sells. It has a isolation valve. The valve sticks straight up in the middle and I believe I can reach it. Nick Simicich - njs%scifi.uucp@uu*.uu*.ne* - njs@bc*.vn*.ib*.co*
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