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Those little double OMS 45 sets might be cute, but I really don't see the point. REDUNDANCY: As we've already heard, you can't squeeze an isolator in there. So, a set of manifolded 45s is no more redundant than a single with a Y-valve. COST: OMS tanks are way overpriced. I'm guessing at least $300/ea. for the 45s, $250 for a manifold, and $100 for custom bands and bolts. That puts you in the $950-1,000 range for your mini-doubles. And, if you want to do more than one dive and don't have a portable compressor, you better have two sets of these mini-doubles which means you'll be in for close to 2 grand. You can buy FIFTEEN AL80s for that price. COMPATABILITY: Assuming you can only afford 1 set of mini-doubles, then you'll have to convert your gear back for singles every time you want to take a second dive. That means pulling off all your hoses and rearranging them on your first stage, adding a single tank adaptor, etc. unless you carry a separate set of regulators that are already rigged for single tank diving. Plus, your wings for double 45s might not be ideally suited for single tank diving so you might need 2 sets of wings along with you too. So now your gear bag is twice as big as anyone elses. What kind of failure are you guys afraid of on a recreational dive that requires mini-doubles? It won't save you on an out of air failure unless you're diving them as independents and we won't go there. If you blow a HP seat or a hose you aren't going to instantly lose your gas, you have your buddy and you have the surface. Of the millions of recreational divers worldwide, how many die due to lack of equipment redundancy as opposed to diver error (running out of gas, deep air, wrong gear etc.). If you truly need the redundancy but not the gas capacity of doubles (i.e., for cavern diving or ice diving) then why not just use a Y valve and be done with it? Kent lind Juneau, Alaska ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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