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Re: [PSUBS-MAILIST] Piping Advice
That's an interesting VBT arrangement and I never noticed that in the
photos before. It looks like you changed the linkage under the hull as
well since your VBT thru-hulls appear to be offset upwards on the hull
rather than dead center in the bottom of the hull. By the way Dan, do
you have a model # for the batteries you are using? I need a source.
Jon
On 11/30/2011 10:17 AM, Dan H. wrote:
For better access to my VBT valve, I used linkage that connect to the
arm that you can see on my right hand side in pics of my sub
"Persistence." As for the VBT, air supply, air vent and water in and
out valve, they are controlled independently. What I added is a gauge
to tell the pressure in the VBT. When fine tuneing the VBT it's good
to know, before opening the water valve, if your going to push water
out or let it in. The separate controls aren't a problem but the
water inlet location on the original design is, and I'm no bigger then
George was.
For air supply, I carry two tanks but only one is connected at a
time. When I run low in the one I'm using, I crawl back and switch
the connection to the other tank. I feel comfortable having that
second cylinder in reserve, and switch out the empty as soon as
possible so I always have a spare on board. It would be helpful to
have them both hooked up so all you need to do is flip a valve to
change from tank to tank but I preferred not to have a lot of high
pressure piping in the sub. I use one first stage scuba regulator
that connects directly to the tank. I guess you could use two of them
but it's one more place for a leak.
Dan H.
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