[PSUBS-MAILIST] gamma upgrades
Private via Personal_Submersibles
personal_submersibles at psubs.org
Fri Sep 12 22:42:50 EDT 2014
If you're looking for line that is super strong yet very thin, check out online stores that supply skydivers. I think they call the stuff "canopy line" or something like that. I used to use it on an earlier version of Snoopy's emergency buoy.
Best,
Alec
> On Sep 12, 2014, at 10:31 PM, via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
> The Spectra 12 was chosen for that very reason, to use as a sending line in case of emergency. And we needed low drag as most of the JSL operations areas in the early days were in the Bahamas and Gulf Stream off Florida.
> Vance
>
>
> -----Original Message-----
> From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
> Sent: Fri, Sep 12, 2014 9:05 pm
> Subject: Re: [PSUBS-MAILIST] gamma upgrades
>
> I like the idea of a constant tension spool in the float, this way the float is
> always directly above the sub, or close at least. A strong line will be needed
> because I want to be able to slide a rescue cable down the float line. Unless I
> have two lift bags installed by then. :-)
> Hank
>
> --------------------------------------------
> On Fri, 9/12/14, Alan 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, 8:38 PM
>
> Why go
> for a strong breaking strain if you are just towing a
> float?Wouldn't you want something that just
> suffices in case it snags
> onanything?Alan
>
> Sent from my iPad
> On
> 13/09/2014, at 7:23 am, via Personal_Submersibles <personal_submersibles at psubs.org>
> wrote:
>
> Agreed. The
> best I've seen for this kind of thing is Spectra 12 from
> Novabraid--a hollow braided 12 strand rope with breaking
> strengths comparable to wire rope. The 1/8" diameter
> rope, for instance, has a breaking strength of 1800 pounds.
> Anyone who checked the JSL emergency buoy reel will have
> seen about a half mile of that stuff on a spool between the
> pilot's sphere and the diving compartment. It is
> seriously strong, easy to handle, and resistant to virtually
> everything, apparently (sun, salt water, heat, and so on).
> Great stuff.
> Vance
>
>
>
>
>
>
> -----Original
> Message-----
>
> From: Sean T. Stevenson via Personal_Submersibles <personal_submersibles at psubs.org>
>
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
>
> Sent: Fri, Sep 12, 2014 8:10 pm
>
> Subject: Re: [PSUBS-MAILIST] gamma upgrades
>
>
>
>
>
>
>
>
>
>
> 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
>
>
>
>
>
>
> 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
>
>
>
>
>
>
>
> 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
>
>
>
>
>
>
>
> 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
>
>
>
>
>
>
>
>
> _______________________________________________
> Personal_Submersibles mailing
> list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
> -----Inline Attachment Follows-----
>
> _______________________________________________
> 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
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20140912/1ff4e1b9/attachment-0001.html>
More information about the Personal_Submersibles
mailing list