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On Mon, 30 Dec 96 16:28:24 -0500 Jim Cobb <cobber@mi*.co*> writes: >Look. One thing you independent people are overlooking here is a bit >of >failure analysis. What are the chances of a well made manifold >breaking? >How hard do you have to hit one to make it break? I have seen >manifolded >doubles do triple gainers off of the tank racks in rough seas without >leaking. > >Really, people who actually dive, what do you think would be the most >likely thing to occur?: > >1. The diver fucking up. 95% or more >2. A hose bursts or reg fails. 4.9% people get hurt when this happens in close quarters >3. A manifold fails. 0.01% we have had 5 manifold failures, cracked we also have had single valve failures, broken handles bent valve mostly on the boat or brought on damaged it's hard to tell where the problem originated. steve >E-mail-----Address-----wahoo-captainsteve@ju*.co* Wahoo Dive Charters PO Box 888 Miller Pl NY 11764-0888 Ph-516-928-3849 Fax 516-928-3873 There's No Substitute for EXPERIENCE >On number one I have seen many times (yours truly included). On >number two I have seen a dozen or so times. On number three never. >Never , ..................wait a while it will happen it's not frequent. >have I seen or heard of a catastrophic manifold failure. > >So with independents in the most likely (#1) scenario, the diver >screws >up his/her gas management and is dead. With manifolds this won't >happen. > >In the second most likley scenario the independent diver immediately >looses 50% or more of the available air supply, maybe you're dead, >maybe >not. Maybe you will get away with being one bent motherfucker, >assuming >you don't freak out and panic. With a manifold the only gas you loose >is >how long it takes you to shut the valve. > >AH HA, you say, in the last scenario, independents rule! Maybe so, but >I >submit the odds are you are going to be feeding the fish in Davy >Jones' >locker from scenario 1 or 2 long before 3 ever has a chance to happen. > >You independent users are betting your lives that diving independents >is >saving you from the most unlikely situation. This is nuts, lunacy, >ignorance at it's pinnacle. Lets face it, the main reason people dive >independents is that you are cheapskates and don't want to fork out >the >dough for a decent doubles rig. You are rationalizing your poor >judgement. There in no other logical reason. > >As far as the statement that doubles are harder to move around, I had >to >laugh at this. I have seen 110lb women move their doubles around >without >breaking a sweat. How did they do this miraculous feat? Put the stupid > >tanks on, you idiots, you don't hump them around by the friggin >valves. > >Let me tell you what, though. This fellow with the independent 80 and >100 >strapped together, was I going to say anything to him? Hell, no. >Divers >are the hard-headest bunch of boneheads on the planet (I mean, take a >look around, will ya?). I just avoided the guy like the plague and was > >happy we were doing a weenie dive, so he might have a chance should he > >fuck up. > >Believe me, I'm no dive God, but when truths speaks, I listen. > > Jim > > >>Can anyone say what advantage a manifold system has >>over an independant system? Perhaps in an intelligent >>manner? >> >>I can state pro's & con's with both systems. >> >>Independants make you monitor both tanks and demand >>good gas management between them. A complete failure >>in one tank does not compromise the whole system. >> >>A manifold would _seem_ to lessen the need to monitor >>so closely your gas since you now have one system. But >>you have added extra failure points, and if your system >>opens in an environment where you can't secure it (cave >>or wreck restriction, for example) OR you are unaware >>of a failure, you lose gas from your ENTIRE system >>instead of one tank. You can get away with one less hose >>& guage, but then you have no redundancy or check for >>your primary. >> >>Something else to consider, if you are going to bring >>swing bottles than in effect you have perhaps several >>"independant" systems. Thus reg switching and gas management >>should pose no problems. >-- >Send mail for the `techdiver' mailing list to >`techdiver@aquanaut.com'. >Send subscription/archive requests to >`techdiver-request@aquanaut.com'. >
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