[PSUBS-MAILIST] Lights

Tue May 13 12:29:22 EDT 2014

oh no, it gets worse!  Yet another job to add to my rapidly growing "winter
modifications" list.

>I'm thinking they are loaning each other some electrons through the water
to even things out. A very >scientific explanation, eh?
I like it.  Electrons and water and stuff, i can understand that!
Thanks
James

On 13 May 2014 17:05, Alec Smyth via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Mine were insulated from the hull as well, if one can consider a chunk of
> metal in sea water to be insulated - the rubber strap is circumvented by
> water. And mine were powered by their internal batteries instead of from
> the sub. I think the issue is currents passing between the two lights. As
> their batteries will never be at the same exact voltage, I'm thinking they
> are loaning each other some electrons through the water to even things out.
> A very scientific explanation, eh?
>
>
> On Tue, May 13, 2014 at 11:32 AM, James Frankland via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>> Hi Alec,
>>
>> Yeah, i think your probably right.  To be fair ive only switched them on
>> briefly underwater once.  They are insulated from the hull mind as there is
>> that rubber pad and thinking about it, they are mounted to the fibreglass
>> of the forward tank.
>>
>> Think i might attach a bit of zinc to each, give them a fighting chance.
>>
>> So annoying!  i was really pleased with my lights!  Might be back to
>> Emiles drawing after all.  I bought the lenses and got half way though
>> making one.
>>
>> oh well.
>> James
>>
>>  On 13 May 2014 16:08, Alec Smyth via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>>> 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*<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*<personal_submersibles-bounces at psubs.org>]
>>>>>> *Namens *swaters via Personal_Submersibles
>>>>>> *Verzonden:* dinsdag 6 mei 2014 22:10
>>>>>> *Aan:* *personal_submersibles at psubs.org*<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
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>   Sent from my U.S. Cellular© Smartphone
>>>>>>  ------------------------------
>>>>>>  _______________________________________________
>>>>>> Personal_Submersibles mailing list
>>>>>> *Personal_Submersibles at psubs.org* <Personal_Submersibles at psubs.org>
>>>>>> *http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles*<http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles>
>>>>>>
>>>>>>
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>>>>>>
>>>>>
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