Reply to:     RE>>72s as doubles

Drew,

This may be true when the water is relatively warm (>65 deg), but
when the water is cold, (<54 deg) the 80's don't provide enough negative 
buoyancy to offset the additional required thermal protection. 
They are also not steel, so they will  get banged up a bit
more on wreck dives. And yes, the 72's need a little more 
maintenence than aluminum tanks.

I picked up my 72's for less than 100 each :-))

Steve

Date: 1/27/98 3:05 PM
To: Hogan, Steve
From: dmooney@cy*.ne*

Because aluminum 80's cost about half to one third as much to buy new and
are a bit less of a maintenance hassle for saltwater use. Not to mention the
buoyancy characteristics of 80's over 72's make them the more desirable tank
for use in a doubles rig in open water.

Bill Mee wrote at length about this a few months back. Check the archives on
techdiver.

Drew

Jammer Six wrote:

> Is there anyone out there using two steel 72s as doubles?
>
> Seems to me, in light of all the blathering going on lately against pony
> bottles, that this could at least be a viable solution.
>
> -Somewhat smaller and lighter than 104s
> -140+ total feet of gas
> -All gas accessable from either reg
> -Compact, hogarthian setup
>
> Should be plenty for a simple sport dive.
>
> Why would or wouldn't someone use this rig, set up properly, rather than
> an H valve, or a large pony?
>
> ------------
> "C'mon, you sons of bitches, you
> want to live forever?"
>      -First Sergeant Dan Daly, 1918
> ------------




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Date: Tue, 27 Jan 1998 15:06:39 -0600
From: Drew Mooney <dmooney@cy*.ne*>
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Subject: Re: 72s as doubles
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