[PSUBS-MAILIST] 12V DC Light Survey

[Alan via Personal_Submersibles]

Steve, Jon,
sorry didn't see the comment about oil / air.
I went with air after playing around with oil. Mainly because of mess & concerns
about the oil degrading or yellowing of the oil. The perspex lens I was using
with oil compensation, trapped the heat in compared with a glass lens. 
You put your hand in front of the glass & plastic lenses & a lot more heat 
radiates out through the glass. 
When we visited Nuytco they were using oil compensated lights with an oil
filled plastic wiring tube out the back. I am pretty sure I remember one of their
guys saying that they initiate the collapse of this tube by putting some
sort of clip on it. We discussed this on Psubs & thought that the plastic tube
could take more than 100psi before collapsing & equalising the light fitting
without this initialisation.
I spent a lot of time designing & building my lights, but I was aiming for something
as small as possible. If you don't care about size then oil compensating an off 
the shelf light as Hank suggested will save you a lot of time. I think Alec hard
anodised an off the shelf light. 
Below are the parts for the light I made, including the mold for the polyurathane
exterior of the wire entry. The lens, driver, driver housing & large teflon seal that
the lens sits on were custom made for me.
Alan



> On 10/11/2018, at 1:54 PM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Jon, Steve
> Not sure if this is up your alley, but here is a picture of a 10,000L oil filled light that is very easy to build and inexpensive.  I have tested this light to 1,500 psi.   This is a short version of the 24,000 L light on Gamma that is just amazing.  The light consists of a off road light bar circuit board that slides tightly into an acrylic tube with rubber ends to act as bellows.
> Hank
> 
> On Friday, November 9, 2018, 3:57:23 PM MST, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> 
> I would add to that survey, please describe the ease of air/oil compensating the light.
> 
> 
> From: Steve McQueen via Personal_Submersibles <personal_submersibles at psubs.org>
> To: Steve McQueen via Personal_Submersibles <personal_submersibles at psubs.org> 
> Sent: Friday, November 9, 2018 4:51 PM
> Subject: [PSUBS-MAILIST] 12V DC Light Survey
> 
> All, for those using 12V systems I was wondering who has an LED design that works well? Was hoping to get feedback on lumens and currents.
> 
> I am allowing 10 amps per light as an assumption for choosing a penetrator rating (10k lumens = approx. 111 watts (LED), 111W/12V= 9.25A).
> 
> Seems 10k lumens has proven enough from what I have been observing.
> 
> Looking for some validation, feedback. 
> 
> Thanks, Steve
> 
> _______________________________________________
> 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
> <IMG_0575.JPG>
> _______________________________________________
> 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/20181110/fc0dc69f/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image1.JPG
Type: image/jpeg
Size: 798982 bytes
Desc: not available
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20181110/fc0dc69f/attachment-0001.jpe>