[PSUBS-MAILIST] k-250 building questions

[roberto alvarez via Personal_Submersibles]

Were i can contact Emile for the acrylic? thank`s

2017-09-06 3:54 GMT+02:00 Alec Smyth via Personal_Submersibles <
personal_submersibles at psubs.org>:

> Hi Philippe and congrats on the undertaking! I had a K250 for about 12
> years, so here are my two cents.
>
> 1) Precisely because they are in the cabin, I would recommend AGM
> batteries for safety. Of course true that Kittredge used traditional
> lead-acid for years without incident, but since there is something safer
> these days, it seems logical to make use of that.
>
> 2) On my boat I added saddle tanks and they worked well, but as a
> complement to the standard ones. You can see pictures here:
> http://www.psubs.org/projects/1234567810/snoopyin2012/
>
> If my saddle tanks had been the only tanks, they would have needed to be
> larger, but that can also create some complications related to longitudinal
> stability, and the side thrusters don't make it any easier. In short yes it
> should be possible, and as an example you might look up the K250 called
> "Great White" (although I have only seen photos of it which don't show all
> the details of the MBTs.) However, the standard tanks should not be too
> hard to make, they are a good shape to lay fiberglass because there are no
> sharp edges, which are an invitation to forming bubbles as lay the cloth.
> I'm really bad at fiberglass work myself, but the standard MBTs are a good
> first project.
>
> 3) For the acrylic my advice is the opposite - I would not even try that
> myself and would go to the experts. There are two here, Greg and Emile.
> Greg is without a fabrication facility at the moment, so I that leaves
> Emile.
>
> 4) There are indeed a couple of K250s up on the great lakes. Perhaps
> someone will speak up...
>
>
> Best,
>
> Alec
>
> On Tue, Sep 5, 2017 at 8:56 PM, Philippe Robert via Personal_Submersibles
> <personal_submersibles at psubs.org> wrote:
>
>> Hi All,
>>
>> I undertook the construction of a k-250 submarine. I have most of the
>> metal components to make the pressure hull. I have some questions about
>> batteries, MBT and acrylics dome.
>>
>> -Is it a good idea to use deep cycle lead-acid battery inside the
>> pressure hull ? I read on old psubs mailing list to open the hatch when the
>> batteries is charging. (h2)?
>>
>> -Do you think that the MBT can be replace by steel saddle tanks ? I have
>> no idea how to make the original one and if I can upgrade the original MBT
>> it will be great.
>>
>> -I try to find someone to make my acrylic dome with some experience in
>> submarine dome forming.
>>
>> -I live in Quebec, Canada. So, if you know k-250 owner near New Hamphire,
>> Vermont or Main it will be great if I can take a look on the sub. An hour
>> or two, I do not want to disturb the owner.
>>
>> tanks
>>
>> Philippe
>>
>> phelop at gmail.com
>>
>>
>>
>>
>>
>>
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>>
>>
>
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