[PSUBS-MAILIST] gamma upgrades

[Sean T. Stevenson via Personal_Submersibles]

Be aware that when you start doing deeper dives, a significant portion of your power will be used just to drag that line through the water - particularly if holding position against a current. Don't go larger than necessary. You might want to consider a topsite float and constant tension on the line.

Sean


On September 12, 2014 4:49:39 PM MDT, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>Vance,
>I like this rope because it is buoyant so it is always going straight
>up, also it never sinks into the prop on the surface.  It is not a
>tether really, it is a tow line for the flag since I don't have a
>surface boat.
>Hank--------------------------------------------
>On Fri, 9/12/14, Vance Bradley via Personal_Submersibles
><personal_submersibles at psubs.org> wrote:
>
> Subject: Re: [PSUBS-MAILIST] gamma upgrades
>To: "Personal Submersibles General Discussion"
><personal_submersibles at psubs.org>
> Received: Friday, September 12, 2014, 6:40 PM
> 
> I don't like nylon
> for a surface tether because it soaks water over time and
> gets negative and heavy. Quarter inch polypropylene is
> neutral and has a 1400# breaking strength. We always used it
> unless there was a lift to do ( like long base acoustic
> transponders with a 300# bottom weight, for instance).
> Vance 
> 
> Sent
> from my iPhone
> 
> > On Sep
> 12, 2014, at 6:28 PM, hank pronk via Personal_Submersibles
> <personal_submersibles at psubs.org>
> wrote:
> > 
> > 
> > Vance, 
> > Great idea, I
> am using 1/2 in yellow nylon rope that is buoyant and so far
> it is good but,,, the other day I hit a tree and dragged
> it.  When I was surfacing I noticed the buoy line was going
> down while I was going up.  That is why I attached it to
> the sample bag winch.  Clever yes? lol.
> > Hank
> --------------------------------------------
> > On Fri, 9/12/14, Vance Bradley via
> Personal_Submersibles <personal_submersibles at psubs.org>
> wrote:
> > 
> > Subject:
> Re: [PSUBS-MAILIST] gamma upgrades
> > To:
>"Personal Submersibles General Discussion"
><personal_submersibles at psubs.org>
> > Received: Friday, September 12, 2014, 6:23
> PM
> > 
> > You can attach
> a trawl
> > buoy to your surface line 6-10
> feet above the sub to help
> > keep the
> line away from your prop.
> > Vance
> > Sent from my iPhone
> >
> 
> > On Sep 12, 2014, at 6:13 PM, hank
> pronk via
> > Personal_Submersibles <personal_submersibles at psubs.org>
> > wrote:
> >> 
> >> Gamma has
> > a
> modified scrubber that takes cartridges, I moved the fan
> > inside the scrubber housing.  I mounted
> removable airtight
> > caps on the intake
> and exhaust ports, now I can leave the
> >
> cartridge inside the scrubber all the time.  I just
> remove
> > the caps and turn on the
> scrubber.  I also added to my
> > safety
> gear, I have a immersion suit in case I have to bail
> > out in freezing water.  My diver below
> buoy and flag that I
> > tow behind Gamma
> all the time is now detachable from
> >
> inside.
> >> Hank
> >
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> > 
> >
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> >
> 
> > 
> >
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