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> >Steve, I'm interested in the nuts and bolts of how you did this. I'm >thinking of doing the same, although the dive shop I use is actually one >of the best as far as bullshit goes. > I did it pretty much according to the OXYGEN HACKER'S COMPANION (I know the author, and helped put the book together, so this is a semi-plug). But for details, I had an O2 tank already for welding - the welding O2 works fine but next time I get it filled I'm going to see if I can swap it for a medical tank (same tank, same valve, price within a dollar or two for 250 cf) and use the med O2 for welding too, rather than the welding 02 for diving. But I am quite comfortable diving on the welding stuff, for reasons that have been discussed here and are covered in the book. So my costs were $80 for an 02 sensor to use with a good DVM I already have (I'm building a dedicated box that will read directly in FO2, which should cost about $20 more, but it's not done yet). Then about $35 more for the whip - used an old reg body for the SCUBA end, a good hose (SS/teflon, the main expense) a gauge, and a couple O2 tank fittings. Oh - and another $5 for O2 clean stickers :-) That's it. If I didn't already have to O2 tank, I'd have to add about $70 for tank lease and contents, but that's still under $200 for the whole shooting match.(there are smaller size commercial O2 tanks which are sold outright, but they only hold 40-60 cf, enough for 3-6 fills. Similarly, if you have a spare 80 you can get someone to pump full of O2 you'll have enough for, say, 8 fills, with minimal investment.) There's a web page for the book, that has a some photos and diagrams of the stuff, at www.conknet.com/~g_packard/oxyhacker.html I'm really getting fond of the stuff. On the 100-130 foot wrecks that abound here (New England) the extra 10 or so minutes it gives on a no- or short-decom dive really makes a difference - as a buddy put it so nicely, using nitrox instead of air lets you trade hang time for bottom time. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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