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James, I do not believe I misinterpreted his proposition. Read his statement again, "it eliminates a hose, that can't be a bad thing." This implies using it as his #2 backup, not a #3 which in any case scenario is still another potential failure point and completely convoluted CF! Further evidence that reinforces the conclusion these worthless stroke devises belong in the Grain Bin at Ole'McDonalds. Air II's only add revenues to the dive industry when uninformed novice divers buy them and if they survive long enough to learn better just add them to their MEPOS pile in the garage. The questions I posted where intended to stimulate sedentary cerebral neurons of anyone considering using such moronic crap. In light of his choices, you may wish to reconsider your observations. Thanks for the assistance in making the case against them. Sincerely, William --- James Dibbs <JDibbs@ma*.co*.au*> wrote: > I don't use an Air 2 and neither am I > considering using one but I think you may have > misinterpreted "salty's" post. > > I think (correct me if I am wrong) he is > suggesting that you have an AIR 2 on your > inflator IN ADDITION to the primary and backup > 2nd stages on your DIR setup. His reasoning > being that it is easier to use the AIR 2 as a > third option reg than depressing both buttons > on the BCD inflator. > > I also had some comments about the points in > your post (see below). > > >1. Assuming a redundant dual outlet manifold, > if the Air II begins to free flow, what exactly > would your management procedure be? > (No arguments there and I expect that a free > flow in an air 2 is more likely than an > standard BDC inflator free flow. ) > > >a. How would you make subsequent buoyancy > adjustments? > (The oral inflator mechanism is separate to the > reg mechanism. When you orally inflate with the > unit you shut off the flow from the reg part. > You could still use the oral inflator if you > had to disconnect the LP hose or shut down the > post - not a great option though) > > >b. Do you sacrifice your breathing devise if > the auto inflator malfunctions? > (not sure what an auto inflator is. I assume > you mean power inflator. Refer to point (a). > reg mechanism/flow path is separate to power > inflator path. You would be in the same boat > with a standard inflator.) > > >2. Is the Air II second interchangeable at the > LP hose connection with the long hose primary > 2nd of your rig and your other team >member's > rigs? > (I agree with your point in that you cannot > connect your BCD hose to another team member's > BCD inflator if they are using a standard unit. > However if the AIR 2 is your 3rd option reg > then you can swap your first two 2nd stages if > required and you cannot connect a bcd inflator > to a reg hose regardless of what type of > inflator you use) > > >3. Most modern high performance first stages > have multiple LP ports usually split equally > between i.e. 2 for high volume second >stage > delivery, and 2 for lower volume accessory > inflation devices. > (A good example of this is the Apex and > Poseidon 1st stages. In the case of the > Poseidon (and I expect the Apex) it is academic > as ALL the LP ports have a flow rate far in > excess of the flow capabilities of the second > stage anyway. The flowrates they give you in > the brochures are performed under test > conditions using a test unit, not while > attached to a SCUBA tank.) > > >a. Recognizing such, which port would you > choose to connect the Air II/BC inflator to? > (see point above. Doesn't matter) > > >b. The HV ports, which are usually about 2400 > liters per minute flow rate, resulting in > possible too rapid an inflation rate? > (would maybe have slightly higher flow rate but > again, ultimate flow rate is restricted by the > 2nd stage/inflator) > > >c. The LV ports, which are usually about 1700 > liters per minute resulting in diminished flow > rate to the backup Air II? > (Again, no way 1700 litres/min can go through > an AIR 2/2nd stage) > > >4. Is the cover plate of the Air II easily > removable to facilitate clearing the exhaust > valve or inspecting the interior-breathing > >chamber? > (Can be unscrewed in the water provided you > remove the retaining pin the same as with the > G250) > > >5. What exactly would be your choice of hose > configurations at the first stages [note, > plural] if you employed the Air II? > (I expect that it would be the same as a > standard DIR config) > > >6. How well does your Air II breathe at say > 200+fsw as compared to a conventional 2nd stage > choice and higher gas densities? > (It would suck big time (in fact they suck in > the shop) but this would be your 3rd reg and I > expect that BCD inflators don't breathe too > good at 200+FSW either) > > 7.Where would you recommend parking the Air II > to minimize entanglement and impact hazards > while providing efficient streamlining? > (Same place your normal inflator goes, on the > left side under a piece of bungee coming from > the D-ring) > > In a nutshell I would avoid using an AIR 2 for > reasons 1. and 1a. but I don't think the other > reasons are valid. > > James Dibbs > Sydney, Australia > jdibbs@ma*.co*.au* > > > --- Salty32321@ao*.co* wrote: > > I dont know I use the Air II and think its > > better than a standard inflator. > > For one thing how many people get their > > inflators serviced every year..maybe > > that's why we keep hearing about all these > > inflator breakdowns. Also it > > eliminates a hose, that can't be a bad thing. > I > > will admit it is larger than > > an inflator but that's nice when your wearing > > three finger mitts and after a > > little practice using it becomes second > nature. > > You should be comfortable > > using all your equipment at any time no > matter > > what any way. > > -- > > Send mail for the `techdiver' mailing list to > > `techdiver@aquanaut.com'. > > Send subscribe/unsubscribe requests to > > `techdiver-request@aquanaut.com'. > > > __________________________________________________ > Do You Yahoo!? > Talk to your friends online with Yahoo! > Messenger. > http://im.yahoo.com > -- > Send mail for the `techdiver' mailing list to > `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to > `techdiver-request@aquanaut.com'. > ===== Interested in how to have someone else pay your monthly IP server fees, even how to pay for your computer system? 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