[PSUBS-MAILIST] First Launch

Thu Oct 24 00:45:13 EDT 2013

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
>>
>>
>>
>>
>>
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>>
>>
>>
>>
>> --
>>
>> 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
>>
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>>
>>
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