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Susan, I have a set of regular 80 doubles and a regular 80 I use for a stage. On the stage, the bouyancy is about perfect. By the time I breathe it down to the point where the tank is positive enough overcome the weight of the regulator, the tank is pretty much empty anyway. I think additional weight would be a liability, but if for some reason I wanted it, strapping a weight on the tank would be my choice rather than a different tank. Lead is a more efficient ballasting material than aluminum. I only use the double 80s with a wetsuit, so the weightbelt must have enough weight on it so that I can get back to the surface in the event of a catastrophe like both first stages failing shut. Since I'm weighted to account for all of the fixed weights I carry, the belt must carry enough to compensate for the variables, namely the gas in the tanks and wetsuit compression. Making the tanks more negative means less weight on the belt and less wetsuit compression I can compensate for, so I can't safely go as deep. With the regular 80s, I can go deeper than my candyass is willing to deal with the temperature anyway, so perhaps there could be some uses there, although there would be more weight on the boat, which with my knees and back, is a showstopper. If I wanted to take some weight off the belt (like for a long, shallow dive), I'd just use a little v-weight with the regular 80s. The only use I would have for a neutral 80 would be as a single tank on very shallow dives or as a hang tank and I'd use steel for those applications anyway. With the drysuit, I tried aluminum a couple of times. Steel is all I use anymore. Don ----- Original Message ----- From: <LouisianaLegal@ao*.co*> To: <techdiver@aquanaut.com> Sent: 03 January, 2002 16:51 Subject: neutral AL 80's > Does anyone have any experiences or comments on the Luxfer "neutral" 80 cubic > foot AL tanks? > > I was wondering if these would make good stage bottles and/or double tank > sets for the ocean. Does anyone know what the working pressure is on these > cylinders? > > Any information would be appreciated. Susan ---------------------------------------------------- Sign Up for NetZero Platinum Today Only $9.95 per month! http://my.netzero.net/s/signup?r=platinum&refcd=PT97 -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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