[PSUBS-MAILIST] submerge !

Alan via Personal_Submersibles personal_submersibles at psubs.org
Thu May 9 18:47:42 EDT 2019


Brian,
I get confused about what you call front & back. I think you were
Transiting on the surface in one direction & diving in another.
Is the occupancy sphere being called the front?
Alan


> On 10/05/2019, at 9:43 AM, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Hi Alan, 
>                    That video with me rocking back and forth was with absolutely no lead ballast in the bottom, so it was very unstable at that point. 
> 
>  It's basically too heavy, so I can reduce the lead ballast somewhat, but if I take too much out it will be more unstable during the transition stage.  It was hard to get a good reading on what was happening because I couldn't tell if the front straps were supporting the front of the sub.  I think they were though, I did a test where I tried to bring the nose up by it self and I couldn't do it , so that tells me that the nose is still a bit heavy.    I think I want to get one of those fiberglass hp tanks that Hank was talking about.  
> 
> Brian 
> 
> --- personal_submersibles at psubs.org wrote:
> 
> From: Alan via Personal_Submersibles <personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
> Subject: Re: [PSUBS-MAILIST] submerge !
> Date: Fri, 10 May 2019 09:29:53 +1200
> 
> Brian,
> Congratulations! 
> The sub is looking good with all your recent modifications.
> Did you test the stability at all? I know in a previous video you were in the
> Conning tower rocking her about. Would have liked to have seen a diver
> on the outside trying to pull her over as you went down. 
> Looked like you could trim her well, were you happy with that?
> Alan
> 
> On 10/05/2019, at 9:16 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Brian,
> You get first prize for classy test facility.  Congratulations!  you sure got some big ass vent valves
> Hank
> 
> On Thursday, May 9, 2019, 2:32:55 PM MDT, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> 
> Hi all,
>                      Finally went all the way under !    Need to adjust a few things.  Combination of less ballast weight overall and some additional buoyancy in the nose.
> 
> 
> https://www.youtube.com/watch?v=QlPXqX9Vmgo 
> 
> 
> 
> Brian
> 
> 
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