[PSUBS-MAILIST] newbie looking for core starter info
Alan via Personal_Submersibles
personal_submersibles at psubs.org
Mon Mar 12 21:55:35 EDT 2018
Shanee,
I would think that the large flat viewport at the front would be the lowest
denominator with view to depth. Ask Les what he thinks is the weakest
point. If it is that viewport, then replacing it might get you a bit more depth.
For shallow diving submarines to 5 bar pressure you are supposed to test
them unmanned to 1.7 x the intended dive depth & on paper they should withstand
3.2 X this. For 5-10 bar pressure diving depth it is tested to 1.4 X this with a theoretical
crush depth of 2.4 times diving depth.
So if you think it will crush at 240ft you can dive it to 100ft as long as you have
tested it to 140ft under the GL rules for 5-10 bar diving depth.
I would think it would be hard to analyse the crush depth, & of course if you
test it beyond it's strength you end up with no sub:(
Looks a nice sub.
Alan
Sent from my iPad
> On 13/03/2018, at 2:08 PM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
> Shanee,
> My feeling is you will end up welding a hemi head or elliptical head onto the front end of your hull and installing multiple ports.
> You might be able to buy a head and weld a ring to that that can be bolted to your existing ring. You could avoid cutting and welding to the hull. What is your depth goal? This is pure speculation without seeing how it is built.
> Hank
>
> On Monday, March 12, 2018, 6:20:13 PM MDT, Shanee Stopnitzky via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Thanks for the info! I got it from someone who got it from Les - I've been able to ask him some questions but not a lot yet. I'll have to check out the archives.
>
> Any thoughts on a max depth for the hull design? We would like to change the front window, and are also looking to purchase one used if anyone has any leads or ideas.
>
> Best,
> Shanee
>
> ~~~~^~~^~~~~^~~^~~^~~~~^~~^~~^~~
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>
> 'The fact remains that political frontiers are impervious to our verbal cultures, while the substantially nonverbal civilization of playfulness crosses them with the happy freedom of the wind and the clouds.' ~ Primo Levi
>
> On Mon, Mar 12, 2018 at 4:13 PM, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> That sub was built by Les Katschor. You can see some of its development at http://www.psubs.org/ projects/1237526415/twomansub/
>
> Did you buy it from Les? He could certainly fill you in on its capabilities. He dived it at the 2012 convention in Michigan. Go to PSUBS.ORG -> Psubs Community -> Video -> 2012 and you will find some footage of him in the submarine.
>
>
> From: Shanee Stopnitzky via Personal_Submersibles <personal_submersibles at psubs. org>
> To: Personal Submersibles General Discussion <personal_submersibles at psubs. org>
> Sent: Monday, March 12, 2018 6:56 PM
> Subject: Re: [PSUBS-MAILIST] newbie looking for core starter info
>
> Hi all,
>
> Thanks for the warm welcome! Here are some photos: https://photos.app. goo.gl/pckEMWuvkcofc4h02
>
> I know practically nothing about how she was built and she hasn't been delivered yet, but looking forward to finding out what the options and constraints are!
>
> Best,
> Shanee
>
>
> ~~~~^~~^~~~~^~~^~~^~~~~^~~^~~^ ~~
> <>< <>< ) <*III><
> <>< <>< <>< ( ( <*III><
> <>< <>< <>< ) )
>
>
> 'The fact remains that political frontiers are impervious to our verbal cultures, while the substantially nonverbal civilization of playfulness crosses them with the happy freedom of the wind and the clouds.' ~ Primo Levi
>
> On Sun, Mar 11, 2018 at 4:14 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs. org> wrote:
> Hi Shanee,
> Can you post some pictures of your new sub. I for one love pictures of unknown subs and how they are built, as do most of us.
> Hank
>
> On Saturday, March 10, 2018, 9:12:11 PM MST, Shanee Stopnitzky via Personal_Submersibles <personal_submersibles at psubs. org> wrote:
>
>
> Hi all,
>
> I just purchased a simple, shallow (30') water homemade personal sub that I would like to consider retrofitting to be able to dive deeper. I have Frank Busby's book and am wondering if there are more sources of essential reading on building and maintaining a sub. We plan to go slowly and carefully with any developments, but I need to start somewhere!
>
> Is there a searchable archive of past email threads? I wasn't able to find any.
>
> Thanks for any and all input. It would be also great if there is anybody out there who is particularly enthusiastic about answering many newbie questions because I will have a lot and don't want to annoy the whole group all the time.
>
> Best fishes,
> Shanee
>
> ~~~~^~~^~~~~^~~^~~^~~~~^~~^~~^ ~~
> <>< <>< ) <*III><
> <>< <>< <>< ( ( <*III><
> <>< <>< <>< ) )
>
>
> 'The fact remains that political frontiers are impervious to our verbal cultures, while the substantially nonverbal civilization of playfulness crosses them with the happy freedom of the wind and the clouds.' ~ Primo Levi
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