[PSUBS-MAILIST] Fw: used 80cf scuba tanks

[Rick Patton via Personal_Submersibles]

I had herd about the stress crack problem and the shop owner said that was
mainly with tanks made by walter Kiddey. They can also check for those
cracks using an electrical charge like magna flux testing as you can't see
them very easily while doing a vip. The tanks do come with a resent hydro.

Rick

On Sun, Aug 9, 2015 at 10:12 AM, Tom J Whent via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> If you do buy them, another important aspect for you to check is the alloy
> of the cylinder. I can't recall what year Luxfer stopped manufacturing
> them,
> but any which are made from  6351-T6 aluminum alloy are prone to stress
> failures in the neck/thread area. I don't think a reputable shop would sell
> them, but it is certainly worth investigating. The failure of these tanks
> can be catastrophic. The alloy will be marked on the cylinder.
>
> Tom
>
> -----Original Message-----
> From: Personal_Submersibles [mailto:
> personal_submersibles-bounces at psubs.org]
> On Behalf Of Jon Wallace via Personal_Submersibles
> Sent: Sunday, August 9, 2015 9:21 AM
> To: Personal Submersibles General Discussion
> <personal_submersibles at psubs.org>
> Subject: Re: [PSUBS-MAILIST] Fw: 12 Volt Reversing Continuous Duty Silver
> Contact Solenoid Relay for Winch Motor | eBay
>
>
> Seems high to me for something manufactured in 89.  I'd ask for a new hydro
> so it's good for five years.  Lowest new price in US seems to be divers
> direct at $180, but if I were you I'd check out craigslist or similar
> online
> advertising where you will probably find a better price.
>
> Jon
>
>
> On 8/9/2015 12:58 AM, Rick Patton via Personal_Submersibles wrote:
> > I doubt I'll ever exceed that many cycles per launch so I'll just go
> > with the 80,s. There shorter than the 100,s and that will leave more
> > room for the 02 bottles on the pods. There is a dive shop here on the
> > big island that has a couple of use aluminum 80,s for sale for $100
> > each. They were made in 1989. That sound like an OK price to you guy's?
> >
> > Rick
> >
>
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