[PSUBS-MAILIST] LED light

Fri Sep 8 17:13:40 EDT 2017

 Alan,Go on eBay and check out LED head lights.  They go over 100,000 lumens.  I am trying it because I have the housings already made.   It is literally a 10 minute job per light.Hank
    On Friday, September 8, 2017, 3:10:02 PM MDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 Hank,I agree with you on using something off the shelf that you can adapt.I bought at least 15 aluminium lights, hoping to adapt them to an underwater light. All around $10.None of them worked out for me, but if I saw anything with potential I would buy it. I am doing 4 lights at once which speeds up the process on the lathe,but it still is a lot of work.I am still puzzled at you're high lumens, as most car led lights I saw were a maximum of 100W ( 10,000 lumens)Cheers Alan

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On 9/09/2017, at 4:32 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Alan,No, I got it right, 48,000 lumen for the pair and there are also 96,000 Lumen per pair.  Now thats' bright;-)  I am not sure how they will work but for the 10 minutes it took to put bulbs in my fixtures, it is worth a try.  I do NOT want to rely on one light source.  Imagine you drive 4 hr to the dive location then 1 hr to get on site then you dive 380 feet to the wreck and you spot the gold and your light quits.  At 380 feet it is dark!   I currently have three separate light sources with separate power sources and separate switches.  Hank
    On Thursday, September 7, 2017, 8:31:04 PM MDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 Hank,you sure you got the Watts right?A ball park figure is 100 lumens per Watt, so that would mean a240W lamp.
   I think I know the type you refer to; cob on a pedestal. I believethey would rely a lot on the reflector configuration or the lightwould just go straight out the sides. Also car head lights are morespot lights than flood that we require. It would end up a lot largerthan if you went with the type of led that Cliff, Alec & I are  using. These have a built in wide angle, & I am not needing any  reflector.  You can use a focusing lens if you want a spot.Was googling & found this 100W round Cree led that may be an alternativefor Cliff. http://www.cree.com/led-components/media/documents/ds-CXA3070.pdfAlanSent from my iPad
On 8/09/2017, at 1:24 PM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Hi All,I am conducting an experiment with LED lights.  I have ordered two car LED headlight lamps.  They are 24,000 lumen each.  I can fit the lamps inside my full ocean depth housings from eBay  (12,000m)  I am wondering why nobody has tried these bulbs?   They are compact and super bright.I have mounted the lamps on Gamma with temporary halogen car headlight bulbs.  I will swap the bulbs out when the new ones arrive.  Hank

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