[PSUBS-MAILIST] gamma upgrades

[via Personal_Submersibles]

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

 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20140912/5c68c220/attachment.html>