[PSUBS-MAILIST] Lights

Tue May 13 15:38:17 EDT 2014

When I was at Nuytco, I held a light for the DW subs, it is a bunch of led's in a square housing with a rubber membrane on the back filled with oil.  A simple box with an acrylic lens, very simple.
Hank--------------------------------------------
On Tue, 5/13/14, Alec Smyth via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Subject: Re: [PSUBS-MAILIST] Lights
 To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
 Received: Tuesday, May 13, 2014, 11:08 AM

 I think they might corrode,
 but there's an easy way to find out. Its so fast, if
 they do corrode you will find out pretty quickly. Mine
 sprouted white stuff all over them, they looked a bit like
 the barnacles on whales after just hours.

 :(
 Alec

 On Tue, May 13, 2014 at
 9:34 AM, James Frankland via Personal_Submersibles <personal_submersibles at psubs.org>
 wrote:

 hmm.  Got me worried now
 Alec.    

 I have a mains feed into my lights (via a blue
 globe).  I just soldered the live to the Centre spring and
 the return to what appears to be the body.  Do you think
 ive got a leak here.  I suspect so.
 http://www.guernseysubmarine.com/Extended_files/Page24089.htm

 The only saving grace is perhaps they are insulated as
 there is a rubber pad in between the mounting bracket and
 the light.  
 http://www.guernseysubmarine.com/Extended_files/Page24944.htm

 What do you think?
 Regards
 James

 On 13 May 2014 14:02,
 Alec Smyth via Personal_Submersibles <personal_submersibles at psubs.org>
 wrote:

 I used Trustfire lights for a season on
 Snoopy but the experience was all around bad. I bought two,
 one of which did not work due to a faulty connection at the
 endcap (which acts like a switch). The factory shipped me a
 new end-cap that fixed the problem. In fresh water they
 worked well, but when I went to Islamorada last year they
 lasted less than a day in the salt water. After just hours,
 one stopped working altogether and both lights were very
 visibly corroded. Silly me, I hadn't thought this
 through. The Trustfire lights close the circuit when you
 screw in the endcap on the handle. They use the light body
 itself as a conductor, like a car uses its chassis. I think
 the issue is that if you put two such lights in salt water,
 you will get stray currents between them.  

 On next week's dive I'll be testing new lights,
 which are LED flood lights intended for tractors or off road
 vehicles. I've been really impressed with how solid
 these are. They are wired with two cables, rather than using
 the light body as a ground. Second, they have a little screw
 that serves no visible purpose, but which when removed
 allows you to fill them with mineral oil. It took a while to
 get the last bubbles out, but with patience you can fill
 these with oil and remove all bubbles in about an hour. The
 front plastic has a little give to absorb the compression if
 I have any bubbles left, but I think I have none. To fill
 them I used a syringe with a "dispenser needle"
 which is a blunt syringe needle you use for filling things
 rather than giving someone an injection. The lights are
 IP67, so supposedly water-tight, but my only mod was to
 reinforce the cable gland with some epoxy. We shall see how
 they work, but my hopes are up, I think these might finally
 be the ideal sub lights and can be used virtually off the
 shelf. I recommend not buying them until Snoopy returns from
 next week's dive, but here is the link if you want to
 take a look in the meantime.

 http://www.surpluscenter.com/Electrical/Lights/DC-Mobile-Equipment-Lights/12-24-VDC-3120-LUMEN-16-LED-UTILITY-FLOOD-LIGHT-12-999-B.axd

 Best,

 Alec

 On Tue, May 13, 2014 at
 7:56 AM, swaters via Personal_Submersibles <personal_submersibles at psubs.org>
 wrote:

 Thanks Alan,
 I have been searching too for some kind of easy and
 cheap solution.

 Thanks,
 Scott Waters

 Sent from my U.S.
 Cellular© Smartphone

 Alan James via Personal_Submersibles <personal_submersibles at psubs.org>
 wrote:

 Hi James,
 I
 bought 4 dive lights off deal extreme, but not a trustfire.
 This was in addition

 to
 4 x 900 lumen torches I had bought previously.

 To
 date I have found them unreliable, mainly in the switching
 function. Most of them

 have
 3 to 5 modes, which only complicates things. I have been
 doing searches for

 12V
 torches or flood lights, to make things easy. My latest
 posting of  a link to a 12V flood light was 

 the
 best I've found so far ($20-). 

 http://www.dx.com/p/ip67-waterproof-10w-700lm-6500k-white-light-led-spotlight-underwater-lamp-silver-216504#.U2rDL_mSxLY

 There
 is room in it to put multiple high powered leds & it
 looks

   like
 the thread in the back is compatible with a 12mm Blue Globe
 cable gland. There 
 are
 a multitude of reflectors on the Deal extreme site to choose
 from.

 There
 is also space  at the front to put in an oring
 grove.

 I'm
 sure we could come up with some good cheap underwater
 lighting options under $100-

 Alan 

 From: James Frankland
 via Personal_Submersibles <personal_submersibles at psubs.org>

 To: Personal
 Submersibles General Discussion <personal_submersibles at psubs.org>

 Sent: Monday, May 12,
 2014 10:06 PM

 Subject: Re:
 [PSUBS-MAILIST] Lights

 Hi Scott,

 I just bought a some trustfire diving lights (there was
 a discussion on them a while ago).  Drilled and tapped a
 hole in the base, screwed in a blue globe gland and they
 were good to go.  Very easy to make and they are super
 bright.

 Regards
 James

 On 9 May 2014 20:18, swaters via Personal_Submersibles
 <personal_submersibles at psubs.org>
 wrote:

 Thanks Emile!
 -Scott Waters

 Sent from my U.S.
 Cellular© Smartphone

 Emile van Essen via Personal_Submersibles <personal_submersibles at psubs.org>
 wrote:

 Scott,

 Attached the drawing how I made my lamps. It is
 open source now..

 I purchased the glass and reflectors from a
 German webshop .
 http://shop.dev-pein.de/Selbstbau/Glaeser/

 Regards,
 Emile

 Van:
 Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
 Namens via
 Personal_Submersibles

 Verzonden:
 donderdag 8 mei 2014 1:06
 Aan: Personal
 Submersibles General Discussion
 Onderwerp: Re:
 [PSUBS-MAILIST] Lights

 Thanks
 Emile,

 I
 have a lathe. Do you have any designs for light housings?
 Thank for the link. I may go that route if I can't get
 my housings to stop
 leaking.

 Thanks,

 Scott
 Waters 

 --------
 Original Message --------
 Subject: Re:
 [PSUBS-MAILIST] Lights
 From: Emile van Essen
 via Personal_Submersibles

 <personal_submersibles at psubs.org>
 Date: Wed, May 07, 2014 11:24 am

 To: "'Personal Submersibles General
 Discussion'"
 <personal_submersibles at psubs.org>

 Scott,

 I made lamp housings for a while. But now I
 think it is better to purchase lampheads for technical scuba
 diving.

 http://www.gralmarine.com/#!mainlightseng/cyrv

  If you own a small lathe you can make them
 yourself.

 Regards, Emile

 Van:
 Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
 Namens swaters
 via Personal_Submersibles

 Verzonden:
 dinsdag 6 mei 2014 22:10
 Aan: personal_submersibles at psubs.org

 Onderwerp:
 [PSUBS-MAILIST] Lights

 Does anyone
 have a source for underwater pressure rated "can"
 lights or light housings?

 Mine took
 on some water during the test. Amount of light was great,
 just need better housings.

 Thanks,

 Scott
 Waters

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