[PSUBS-MAILIST] First Launch

Thu Oct 24 08:44:40 EDT 2013

James

Looks great, well done with all the hard work.

Regards Simon

On Thu, Oct 24, 2013 at 1:26 PM, <vbra676539 at aol.com> wrote:

> George left the sub alone while tacking on the aft extension because the
> passenger section was exactly that, an add-on, and he figured to deal with
> it as its own issue. Otherwise he would have to do exactly what you are
> talking about, which is to re-distribute everything and then be forced to
> do a new weights and balances chart.
>
> I used to talk to him about this, figuring the passenger would be better
> in the belly and in front so he/she could see and participate more fully
> (like Snoopy). But the L-version sub in George's mind was a solo sub with a
> rumble seat, period. Anything beyond that was up to the individual builder.
> He didn't mind, but he wasn't going to join in.
>
> As a side note, they miscalculated on the K600 and it wouldn't float
> correctly, so added the L-style hull section to hold the back end up, then
> shifted all the lead back there to balance it. Had to do it at the very
> last minute, but it worked sufficiently for Lloyd's to buy off on it.
>
> Had they built hull #2,  according to George, it would have had a central
> conning tower on the 6' hull length. Even though it is dimensionally the
> same as a K-350L, it was never intended for two people.
>
> Vance
>  -----Original Message-----
> From: Douglas Suhr <spiritofcalypso at gmail.com>
> To: Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> Sent: Thu, Oct 24, 2013 12:45 am
> Subject: Re: [PSUBS-MAILIST] First Launch
>
>  James, Congratulations on your first launch! I am sorry to hear that you
> had to contend with some complaints, but you handled it well by moving
> along. Some people...
>
>  Anyway, I love you sub! Good job, and again, congrats on your first
> launch. ~ Douglas S.
>
>
> On Wed, Oct 23, 2013 at 3:02 PM, Joe Perkel <josephperkel at yahoo.com>wrote:
>
>> Rick,
>>
>> I have an accurate CAD model of a stock 350 hull and pods with assigned
>> material densities. The software can make short work of determining changes
>> in the longitudinal CG and what effects shifting the pods have. We would
>> have to agree on a vertical datum, say the surface Edge of a hemihead for
>> example.
>>
>> As it lays now, the CG is right under the pilots butt, but it looks like
>> George did not account accurately for the changes in buoyancy once
>> launched. The trick would be trying to guess how far back to shift the CG.
>> I can do this for you on my next group of days off if you'd like.
>>
>> However, I like James idea of external movable weights as a better
>> solution because you still have this 400 lb light condition to contend with
>> anyway.
>>
>>
>> Joe
>>
>> Sent from Yahoo! Mail for iPad
>>
>>  ------------------------------
>> * From: * Land N Sea <landnsea1 at hawaiiantel.net>;
>> * To: * Personal Submersibles General Discussion <
>> personal_submersibles at psubs.org>;
>>  * Subject: * Re: [PSUBS-MAILIST] First Launch
>>  * Sent: * Wed, Oct 23, 2013 6:13:05 PM
>>
>>    I haven’t attached my pods yet to the pressure hull and after hearing
>> about the aft positive buoyancy issue from a number of K-350 owner/builders
>> I am now contemplating moving my pods aft one frame. I have all ready
>> installed my drop weight threw hulls so I would have to extend the cross
>> bar forward that goes between the pods for that plus not having any
>> engineering experience, it would purely be a guess on what it would do to
>> the trim. I doubt it would have the reverse effect and transfer the
>> buoyancy problem to the front but not sure.
>> One thought I had was to bolt them on per plans but be able to adjust
>> them aft as needed to attain the proper trim and then when I find the magic
>> spot, weld in the bell reducers I have and connect the power cables. Any
>> thoughts out their pro or con?
>>
>> Rick
>>
>>  *From:* James Frankland
>> *Sent:* Wednesday, October 23, 2013 2:17 AM
>> *To:* Personal Submersibles General Discussion
>> *Subject:* Re: [PSUBS-MAILIST] First Launch
>>
>>   What im going to do is fix 100Kg under the aft tank, and then make the
>> rest in blocks that can be moved around.  Then divers can place them with
>> straps to the underside somewhere until its balanced.  Will make the blocks
>> at the weekend.
>>
>> On 22 October 2013 20:41, <MerlinSub at t-online.de> wrote:
>>
>>> **
>>> Hi James congratulations,
>>> - seems more and more that to light is a normal standard on launching
>>> Psubs.
>>>
>>> May do not install fix weight in the stern next time. Install
>>> it lose in the center and than trim it longitudinal on dive station
>>> with move it forward or aftward or more in or out.
>>> Its the fastest way to figure out the right weight and trim.
>>>
>>> By the way Alan our overalls are red, and it help the skipper
>>> to figure out which guy is in his crew and which not..
>>> Also the guys with the brighter (many times washed out) overalls are the
>>> workers in the crew..
>>>
>>> http://www.hansesail.com/uploads/tx_gorillary/2013_38_euronauttauchtauf_01.jpg
>>>
>>> :-) vbr Carsten
>>>
>>>
>>>
>>> "Alan" <alanlindsayjames at yahoo.com> schrieb:
>>>
>>> Congratulations James,
>>> Look forward to the coming videos.
>>> What a pain having to cut things short after all that effort.
>>> Maybe you cold buy everyone a set of orange overalls like Carsten
>>> does, to make things look professional.
>>> Alan
>>>
>>>
>>> Sent from my iPad
>>>
>>> On 22/10/2013, at 10:06 PM, James Frankland <
>>> jamesf at guernseysubmarine.com> wrote:
>>>
>>>  Hi All,
>>>
>>> I got my boat in the water at the weekend for the first time.  Put the
>>> pictures up here.
>>>
>>> http://www.guernseysubmarine.com/operations.htm
>>>
>>> I didnt get any leaks at all, so i was super happy.  I wasnt really
>>> expecting to try and dive and would have been happy with just no leaks and
>>> a float test, but everything worked fine, so i gave it a go.  Unfortunately
>>> i didnt have enough lead.  I added 90KG (198lb) of lead, but it still
>>> wouldnt go down.  What i didnt mention on the website was that i was forced
>>> to stop testing because the harbour master came along to say that they had
>>> had an anonymous phone call from some bloody do-gooder who pointed out that
>>> we were using the comercial area of the harbour and didnt have a proper
>>> comercial dive team, which is officially a legal requirement.  So even
>>> though i had full permission from the harbour, i was forced to stop on a
>>> technicality.  They think it was some missery that has the hump on with
>>> harbour and just wanted to be awkward.  Shame because I was about to load a
>>> pile of anchor chain into the boat to get me more weight.
>>>
>>> The boat did seem to be very light at the back and i kept squirting air
>>> into the forward tank to level it out.  Thinking about it, i suspect that
>>> the forward tank was settling into the correct position and it was the aft
>>> tank that was riding high.  Just need to get some weight at the back.  I
>>> had a slight list to port as well which i've no idea where that came from.
>>> Again i will trim that up.
>>>
>>> Anyway, i was really pleased with how it went on my first day.  Im
>>> meeting my divers tonight who took a load of underwater pics apparently, so
>>> i will see how they look later.  Might put some on the web if they are any
>>> good.
>>>
>>> Kind Regards
>>> James
>>>
>>>
>>>
>>>
>>>
>>>  _______________________________________________
>>> Personal_Submersibles mailing list
>>> Personal_Submersibles at psubs.org
>>> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>>
>>>
>>>
>>>
>>> --
>>>
>>> Carsten Standfuß
>>> Dipl.Ing.Schiffbau @ Meerestechnik
>>> Heinrich Reck Str.12A
>>> 18211 Admannshagen
>>>
>>> 0172 8464 420
>>> WWW.Euronaut.org <http://www.euronaut.org/>
>>> Carsten at euronaut.org
>>>
>>> _______________________________________________
>>> Personal_Submersibles mailing list
>>> Personal_Submersibles at psubs.org
>>> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>>
>>>
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