[PSUBS-MAILIST] publicity

Wed Jun 17 16:49:42 EDT 2020

OK, much appreciated.

Rick

On Wed, Jun 17, 2020 at 10:36 AM via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Actually, a 350 is the same as a 250, only with T ribs rather and L-angle
> ribs -- I've got pages of hand written calculations that show crush depths
> -- don't remember them offhand, but I'll try to dig some of that stuff out
> for you -- all of this was done by hand and on a slide rule, of course.
>
> Vance
>
>
> -----Original Message-----
> From: Rick Patton via Personal_Submersibles <
> personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> Sent: Wed, Jun 17, 2020 3:59 pm
> Subject: Re: [PSUBS-MAILIST] publicity
>
> Thanks for the history Vance, it's fun to hear the history of what he was
> up to during his career. Unfortunately some country's are that way, you
> find it, we get it. I would think that he would of known the calculated
> crush depth of all three models he built since he was selling them to the
> public. Does anyone know what the 350 is calculated for crush?I know there
> is a formula for doing stuff like that but that is way above my pay grade.
>
> Rick
>
> On Wed, Jun 17, 2020 at 8:16 AM via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> True in parts. George tested an early K-250 in the Navy test tank in
> Annapolis. His buddy the Admiral was a structural design engineer of Navy
> subs, and had done the figures on the little sub's hull. The boys at the
> shop in Maryland didn't take them seriously. They figured the whole thing
> would implode at about twenty feet. George knew better. He told them the
> first thing to go would be the acrylic dome, and he figured that would
> happen at 800 feet or thereabouts. Which is exactly what happened. After
> the factory was built in Maine and he started on K-350s, he bought some 5'
> hemispheres and planned to build his own tank test facility for the shop.
> This was never completed. Almost every sub was drop tested in a 500 foot
> hole off the mouth of the Weskeag River. A couple of them were built for
> operatibns to 500 feet, and were tested in deeper water out in Penobscot
> Bay. The K-600 was built to Lloyd's spec had to be tank tested with an
> inspector present. So, back to Annapolis. I think they tested it to 750
> feet per Lloyd's instructions for certification to 600 feet. Later on,
> George reacquired the K600 and was on board with some other guys to buy a
> boat and take the whole package to Columbia for a treasure hunt in 900 feet
> of water. He was confident the 600 would do that handily. They actually
> bought the old Coast Guard coastal tug the 'Snohomish', but the Colombians
> ended up saying sure, you can dive for treasure, but whatever you find
> belongs to the Colombian people, and you have to give it all to us. Which
> pretty much killed the profit margin on that particular pipe dream. If that
> hadn't happened, the K600 would have become a K900. Or so the story goes.
> Then George and I collaborated on the design for a K1000. I've got the
> initial prints, but that one was never built, either. Too bad.
>
> Vance
>
>
> -----Original Message-----
> From: Rick Patton via Personal_Submersibles <
> personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> Sent: Wed, Jun 17, 2020 1:25 pm
> Subject: Re: [PSUBS-MAILIST] publicity
>
> Jon
>
> OK sounds good. I was asking for the crush depth of a K-350 and the
> unmanned test depth for one hour is 600' so that doesn't sound correct.
> Someone told me a while ago that Ketteredge had put a 350 when first
> developed in a hyperbaric chamber that was only rated for 1,200 and pushed
> it down to that depth to see if it could take that pressure without
> imploding and nothing happened so he knew that that design would survive at
> least to that depth without failure. Can't remember who told me that but
> does anyone know if that story is correct?
>
> Rick
>
> On Wed, Jun 17, 2020 at 4:13 AM Jon Wallace via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Just point them to the website Rick, if they ask.  There's a link to
> facebook from there.
>
> I get 665 feet for the pressure cylinder and 576 feet for the hull caps,
> but those are theoretical best case limits.  So 500-600 feet would be a
> fair statement.  Given all the fabrication variables there is no way to
> predict a specific depth which is why we use safety margins.
>
>
> On Tuesday, June 16, 2020, 11:18:12 PM EDT, Rick Patton via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> OK, I kind of got the impression over the years that people wanted to
> reach out and make more aware of the group but I didn't want to assume that
> until I got permission.
>  Like I said, they will undoubtedly ask about the sub but not sure
> what their questions will be and hope they don't ask me stuff I don't know
> and look like an idiot, which won't be the first time! I'll let the group
> know when it will be on at what time zone when I find out. Jon, I don't
> have facebook but I hear you guys set it up and converse on it. Should I
> just say "Psubs.org" and then maybe mention that construction pictures can
> be seen there of peoples projects?? I doubt they will know enough to ask
> but if they ask me what the crush depth is, I don't have a clew! Does
> anybody else know? It's a K-350.
> Rick
>
> On Tue, Jun 16, 2020 at 3:39 PM Jon Wallace via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Of course.  Try to find out the date it will air so we can all watch.
>
> Jon
>
>
> On Tuesday, June 16, 2020, 08:48:21 PM EDT, Rick Patton via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Hi guy's
>
> I was contacted a while ago regarding an ad that I had on Craig's list to
> sell a couple of Russian and  Korean hardhats but that she said she was in
> New York and the ad was only for the Big Island.
>  I at first thought that this was some sort of scam as there is so much of
> that going around but she said she was working for a production company
> that was similar to the Antique roadshow and hosted by the Comedian Jeff
> Foxworthy and wondered if I wanted to be involved.
> She said that it was not to sell the pieces but to have them appraised by
> someone and told what they were worth. It's going to be on the A&E channel.
> Anyway, it's legit and I will be filmed Via Skype with Foxworthy and the
> appraiser on 6-26-20. The sub was mentioned and they really want that in
> the background so I have no Idea what they are going to ask me but if they
> ask questions about the sub and they probably will, is it OK to mention
> Pubs? If you are interested, I will let you know what date and time it will
> be aired.
> I didn't want to say anything about the group before asking.
> Thanks
>
> Rick
>
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