[PSUBS-MAILIST] LED Lights

Thu Jul 23 11:18:22 EDT 2015

You are right.  Should have added, unless these OTS utility lights are
potted or oil compensated to the qualification list.  As a personal
preference, I just don't like the mess and maintenance associate with oil
compensation particularly since we are not trying to get to the depth
rating for commercial lights.

Cliff

On Thu, Jul 23, 2015 at 9:31 AM, Alec Smyth via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi Cliff,
>
> Why not an option unless potted? Scott and I are both using the very light
> Jon posted, oil filled, and they're doing great. They even come with the
> filler screw.
>
>
> Best,
>
> Alec
>
> On Thu, Jul 23, 2015 at 10:18 AM, Clifford Redus via Personal_Submersibles
> <personal_submersibles at psubs.org> wrote:
>
>> Jon, thanks for setting up the forum.  I am assuming we can post files as
>> well.
>>
>>  I agree low cost is important but having a functioning light is as
>> well.  OTS LED utility lights like that one you noted are not an option
>> unless they can be potted.  To me the best way to keep the cost low, is to
>> publish construction drawings of a 1-atm  DIY housing that a psubber could
>> machine or have machined by a friend, and publish a design of a PCB that
>> could be easily fabricated using  one of the PCB online sites like
>>  ExperessPCB www.expresspcb.com and DIY populate the board.  As a group,
>> we design and build a prototype that I can test in my shop. If it works as
>> designed, then we post to the psubs site a report, that includes the design
>> drawings, circuit diagram, parts list and test results.
>>
>> Getting a consciences on the design spec is the first step.
>>
>> Cliff
>>
>> On Wed, Jul 22, 2015 at 10:11 PM, Jon Wallace via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>>>
>>> My three words of advice...cost, cost, cost.
>>>
>>> One measure of a success for this project will be how many people
>>> actually build/use it.  If it costs more to manufacture than just
>>> purchasing something like
>>> http://www.surpluscenter.com/Electrical/Lights/DC-Mobile-Equipment-Lights/12-24-VDC-3120-LUMEN-16-LED-UTILITY-FLOOD-LIGHT-12-999-B.axd
>>> off the shelf then it's real world application by psubbers may be limited.
>>>
>>> Over-spec'ing the design above requirements for typical recreational
>>> operations (ie 10,000 psi capability) is likely going to drive up the
>>> cost.  Also, let's remember that "cheap", "low cost", and "good price" are
>>> relative terms for a diverse group like PSUBS so include realistic
>>> estimates of parts and manufacturing especially if tooling is required.
>>>
>>> Jon
>>>
>>> _______________________________________________
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>>> Personal_Submersibles at psubs.org
>>> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>>
>>
>>
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>>
>
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