[PSUBS-MAILIST] Scuba Tank Purchase Questions

[David Colombo via Personal_Submersibles]

And that was an exciting moment!!!!

On Thu, Feb 20, 2020, 9:27 AM hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Steve. Gamma had the same issue
> We blew an o ring just prior to loading a passenger and David jumped on
> the sub to save the air
>
> Sent from my iPhone
>
> On Feb 20, 2020, at 9:56 AM, Steve McQueen via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> 
> Cliff, thanks. Good to hear about actual field issues. I will reconsider
> my thoughts accordingly.  I have completed my contribution for Pisces VI
> and have refocused on finishing my project. Having your own compressor is a
> nice advantage. Are your MBT HP tanks aluminum or steel?
>
>  My K-250 is named "The Great Escape" (get it?).
>
> Steve
>
>
>
>
>
>
> On Thu, Feb 20, 2020 at 11:36 AM Cliff Redus via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> Steve, if it were me, I would go with DIN fitting on scuba tanks.  About
>> 2 years after I built my boat I had an O-ring blow while I was on the boat
>> ramp ready to launch. If this would have happened during a dive, I would
>> not have been unable to blow my MBTs by myself.  I would have had to have
>> divers to manually inflate my MBT with open vent ports.  My experience is
>> that most scuba shops can fill scuba tanks with DIN connections.  After the
>> incident, I switched my MBT HP air supply to DIN values and have never had
>> any trouble since then.  Also, last year I purchased a portable scuba
>> compressor that came with an adapter to let you fill Yoke or DIN valves.
>> Also this compressor is capable of filling a steel HP tank if I want to.
>> To me, the real benefit of steel tanks with DIN connections is the ability
>> to fill to a higher pressure.  If you don't need the higher pressure, then
>> aluminum are lower cost.
>>
>> We are all looking forward to your sea trials for your lime green K250.
>> I love the paint job on your boat.  Has she got a name yet?  I am surprised
>> you have had any time to work on your boat with the PLC work you been doing
>> for Scott on his Pieces 6.
>>
>> Looking forward to catching up with you this year at one of the psub
>> events.
>>
>> Best
>>
>>
>>
>> On Thursday, February 20, 2020, 09:54:59 AM CST, Steve McQueen via
>> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>
>>
>> All, getting ready to buy 2 scuba tanks for my K250. Just wanted to see
>> if anyone had an opinion of my thoughts?
>>
>> 1) Choosing steel vs. aluminum (prefer its weight/buoyancy
>> characteristics)
>> 2) While I was wanting as much air volume as possible I decided against a
>> HP version as I have heard most places won't (can't?) fill to that capacity
>> anyway
>> 3) Deciding on standard pressure steel 80s with K-valve (yoke fitting)
>>
>> I've been watching for a while (including Black Friday) but it seems
>> there isn't much mark up and these tanks don't appear to go on sale.
>>
>> Thanks,
>> Steve
>>
>>
>>
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