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On Wed, 5 Apr 2000, Cam Banks wrote: > So, what if I had a special set of bands made up to hold the tanks far > enough apart that I could fit a standard isolator manifold on there. > Is this just lameness and I should give up the whole idea, or is there > nothing wrong with it? Thanks. Cam, My wife dives these when we're doing no-deco profiles and she doesn't feel like hauling around her 85s. So she's thought this through. Here is her logic, which I think is sound: Since the amount of gas is limited (90 or so cf), overhead engagements are out (no deco, no wreck penetration). So, if there's a failure that calls for isolator shutdown, she figures she would just terminate the dive. If the leak is fast enough to cause her gas supply to be exhausted before she makes the surface, she'll share gas with her buddy (me). Now, about the possible failures. Burst disk or neck O-ring, or maybe one of the manifold O-rings (assuming the OMS non-isolated manifold, which is the only one I know of that fits these with the stock bands). All carry a low probability of sudden in-water failure of significant dimension, especially in non-overhead environments. We've taken care of the burst disks anyway. Also, the extra 1.5" distance needed will push the cylinders far enough apart that they would not contact the backplate on backplates with a deep "v", like the OMS and the nice SS plates made by Roger Lacasse (I don't know about the Halcyon backplate). The cylinders would be held out "in space" by the bands. That might introduce some stability problems. -- Art Greenberg artg@ec*.ne* -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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