[PSUBS-MAILIST] scuba tanks

Sat Nov 3 19:47:13 EDT 2018

 Tim, thanks'I want to mount them under the MBT's against the hull and don't want to add weight that high, but they will be fine at 1.5 lbs negative.  Hank
    On Saturday, November 3, 2018, 5:40:55 PM MDT, T Novak via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

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The typical 80cuft Al scuba tank is 1.5lbs negative in seawater when full containing about 5.9lbs of air.  Completely empty they are 4.4lbs positive in seawater.  Generally, you do not empty an air tank while diving. 

Tim

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of David Colombo via Personal_Submersibles
Sent: Saturday, November 3, 2018 2:48 PM
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] scuba tanks

Hank, just barely, however I never get permission. 

David

On Sat, Nov 3, 2018, 1:21 PM hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Thanks David,  hey will your sub fit in the kids pool like Cliff’s does

Hank

Sent from my iPhone

On Nov 3, 2018, at 2:01 PM, David Colombo via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Hi Hank, I happen to have one of my 80cf 3000 psi alum tanks full, left over from Tahoe. So set her in the pool and its less than a lb negative. unfortunately both my tanks are full at the moment, not sure what its like empty.

Best Regards,
David Colombo

804 College Ave
Santa Rosa, CA. 95404
(707) 536-1424
www.SeaQuestor.com

On Sat, Nov 3, 2018 at 12:20 PM hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Hi All,

I just bought two new aluminum scuba tanks to replace my steel HP tank on Gamma.  I am curious if I can get a fitting for the tank to eliminate the valves.  I don't need to remove the tanks and would like to just plumb them in.  Also, I assume they are neutrally bouyant

 when full ?

Hank

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