[PSUBS-MAILIST] Drop weight

Wed Sep 13 17:45:54 EDT 2017

Yes, that would probably meet the requirement. I'd be careful about any procedure that could prevent you from actuating the drop weight when you need to.

Sean

On September 13, 2017 3:16:59 PM MDT, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>So getting the handle for the release and securing it to the drop
>weight shaft would qualify ?    Makes sense, you wouldn't want an
>accidental release.
>
> 
>
>Brian 
>
>--- personal_submersibles at psubs.org wrote:
>
>From: "Sean T. Stevenson via Personal_Submersibles"
><personal_submersibles at psubs.org>
>To: Personal Submersibles General Discussion
><personal_submersibles at psubs.org>
>Subject: Re: [PSUBS-MAILIST] Drop weight
>Date: Wed, 13 Sep 2017 12:56:54 -0600
>
>I think the intent of the rule is to ensure that a weight ditch is
>deliberate and not accidental. Requiring two actions (ideally separated
>by both location and mechanical character) reduces the probability of
>an accidental weight ditch to near the probability of mechanical
>failure causing the ditch. 
>
>Sean
>
>
>On September 13, 2017 10:36:19 AM MDT, Brian Cox via
>Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>Sean,         The action of opening a safety cover seems a bit
>superfluous  .
>
> 
>
>Brian
>
>--- personal_submersibles at psubs.org wrote:
>
>From: "Sean T. Stevenson via Personal_Submersibles"
><personal_submersibles at psubs.org>
>To: Personal Submersibles General Discussion
><personal_submersibles at psubs.org>
>Subject: Re: [PSUBS-MAILIST] Drop weight
>Date: Wed, 13 Sep 2017 09:20:42 -0600
>
>No. It means that you must make two distinct actions in order to
>release the weight at all.  i.e. a single lever pull should not be able
>to drop your weight, but opening a safety cover over a release
>mechanism would constitute the two actions, for example. 
>
>Sean
>
>
>On September 13, 2017 9:03:20 AM MDT, Brian Cox via
>Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>Sean,      Not sure I'm understanding " two distinct positive
>mechanical actions" ?    Does that mean you need to have two ways of
>releasing your drop weight ?
>
> 
>
>Brian
>
>--- personal_submersibles at psubs.org wrote:
>
>From: "Sean T. Stevenson via Personal_Submersibles"
><personal_submersibles at psubs.org>
>To: Personal Submersibles General Discussion
><personal_submersibles at psubs.org>
>Subject: Re: [PSUBS-MAILIST] Drop weight
>Date: Wed, 13 Sep 2017 08:22:19 -0600
>
>IIRC, the rules require at least two distinct positive mechanical
>actions to initiate a drop weight release. Such a corrosion fuse would
>seem to defy that requirement. 
>
>Sean
>
>
>On September 12, 2017 6:07:03 PM MDT, Brian Cox via
>Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>Hi All,
>
>I had an idea for an emergency drop weight, and it would also work for
>a depth testing function.   Basically it would be a corrosion triggered
>release.  Every time you go on a planned dive you insert a anode type
>material  ( a bi-metal corrosion bolt) which would be scheduled to
>corrode out in what ever time frame you want.  So in addition to your
>regular drop weight you would also have this back up device designed to
>disintegrate at a calculated time.  I know it would work in salt water
>, for fresh water you may have to use some kind of different materials.
>I have a friend who's father use to do some studies for Scripps and the
>devised some fish traps that would float to the surface after a certain
>time period.
>
> 
>
>Brian
>
>_____________________________________________
>
>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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20170913/ee2a5cd1/attachment.html>