[PSUBS-MAILIST] Mushroom Valve?

[Steve McQueen via Personal_Submersibles]

James, I believe I will always have the standard fore and aft soft K-250 ballast tanks.  In addition I robbed a similar idea from Snoopy utilizing tubes to hold "variable ballast" floats.  I just liked the idea of having some additional options for trimming and I believe I will get some added surface stability/freeboard (untested yet).

I might also add additional saddle tanks along side my variable ballast float tubes in the future as I want to add some decking with out loosing stability. My in water testing will determine some of this but like you I am interested in towing and general surface stability.


Thanks,
Steve

---- James Frankland via Personal_Submersibles <personal_submersibles at psubs.org> wrote: 
> Hi steve
> 
> Are you having for and aft tanks on your K250 as well as the saddles?
> 
> I really like the colour, very different from the usual.  Pond green!
> 
> 
> 
> 
> 
> 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?
> >>
> >>
> >>
> >>
> >
> > _______________________________________________
> > Personal_Submersibles mailing list
> > Personal_Submersibles at psubs.org
> > http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
> >
> 
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles