[PSUBS-MAILIST] Mushroom Valve/tow

[emile via Personal_Submersibles]

James,

You can place the saddle tanks a little towards the bow. 
Towing will improve a lot when the sub is a few degrees stern heavy.

Br, Emile

-----Oorspronkelijk bericht-----
Van: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
Namens James Frankland via Personal_Submersibles
Verzonden: vrijdag 2 februari 2018 11:36
Aan: Personal Submersibles General Discussion
Onderwerp: Re: [PSUBS-MAILIST] Mushroom Valve?

Hi All,

Thanks for the advice.  The tanks are simply for surface stability and
better towing ability.

I think I will simply pipe the tanks to two Kittredge style valves in the
conning tower.  The same as the main tanks.

With vents at the for and aft of the tanks, hopefully any bubble will vanish
reasonably quick.  I will put 3/4 inch pipe.

I might put deck plates on as well.  We'll see.

Starting tomorrow......

Many thanks
James

On 1 February 2018 at 18:54, Steve McQueen via Personal_Submersibles
<personal_submersibles at psubs.org> wrote:
> James, When you do mount, like others have said, ensure the mounting
attachments are beefy enough you can also support some decking with these
mounts (if you want). I have similarly placed variable ballast tubes on my
K-250 that will also be used to support my decking.
>
> For improved stability I am also considering adding some smaller saddle
tanks in the future in conjunction to the variable ballast tubes I have.
> I think for this application Alec's arrangement on Snoopy  (1 mech. thru
hull in tower) was clean and simple. I anticipate I will do the same.
>
> I have attached a couple of photos.
>
> Thanks,
> Steve
>
> ---- James Frankland via Personal_Submersibles
<personal_submersibles at psubs.org> wrote:
>> Hi All,
>>
>> I am adding saddle tanks to Jodie B.
>>
>> Im not 100% sure what to do with regards to the vent plumbing.  I 
>> would like to ask if anyone has any advice?
>>
>> I am thinking of putting 2x through hulls on the top of the main 
>> pressure hull.  For and aft of the tower and then piping the vents to 
>> a valve that would operate through them.  Similar to the existing vents.
>>
>> OR, fit the through hulls at the side so they penetrate the tanks and 
>> have a linkage of some sort that operates valves attached to the top 
>> of each tank, for and aft.  Some sort of mushroom valve??
>>
>> Any ideas?  What have other people done?
>>
>>
>>
>>
>
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