<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Rick,</div><div id="AppleMailSignature">I have built my led 7000lm 36V lights & are going to use 2 out front.</div><div id="AppleMailSignature">I have used them on a boat & in the bush & don't consider them an </div><div id="AppleMailSignature">overkill. I think with the clear water in Hawaii you would want more</div><div id="AppleMailSignature">lumens as there will be a further distance that you can see night diving.</div><div id="AppleMailSignature">I have dimmers on mine for low visibility diving, as the back scatter from</div><div id="AppleMailSignature">the muck in the water will be blinding.</div><div id="AppleMailSignature">Led's need a driver to give them constant current & of lesser importance</div><div id="AppleMailSignature">constant voltage. They are reasonably voltage tolerant as long as the current </div><div id="AppleMailSignature">is controlled. I mistakenly had a 36V led running off 80V. </div><div id="AppleMailSignature">You can build your own but for me it was a lot of mucking about designing,</div><div id="AppleMailSignature">sourcing lenses from China etc. I had my led driver designed & made</div><div id="AppleMailSignature">specifically for me by a Chinese firm. I am not happy with aspects of the</div><div id="AppleMailSignature">design as there is a certain part that needs heat sinking & default mode</div><div id="AppleMailSignature">is on if the wiring comes apart. So will be re-ordering an updated driver</div><div id="AppleMailSignature">some time in the future.</div><div id="AppleMailSignature">You can find suitable buck boost drivers on ebay as Alec did, but not with</div><div id="AppleMailSignature">dimming.</div><div id="AppleMailSignature">They don't get too hot if you run them in water & heat sink them to a base.</div><div id="AppleMailSignature">The easiest idea, as Hank says is to find a suitable off the shelf light that</div><div id="AppleMailSignature">you can oil compensate. The drivers however have electrolytic capacitors</div><div id="AppleMailSignature">that are vulnerable to pressure, so if the driver is in the light unit it could</div><div id="AppleMailSignature">fail under pressure if compensated.</div><div id="AppleMailSignature">I have subjected an led on it's own to 2000psi & it survived.</div><div id="AppleMailSignature">Most of the high power leds are around 36V.</div><div id="AppleMailSignature">Let me know if I can help.</div><div id="AppleMailSignature">Emile sells an led light!</div><div id="AppleMailSignature">Cheers Alan</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature"><br><br>Sent from my iPad</div><div><br>On 2/02/2018, at 10:33 AM, hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div>Rick,</div><div>You can keep it real simple and just buy water proof lights (LED) and oil fill them. Just inspect the light to make sure you can drill and put a filler plug in. I have great luck with a 24,000 lumen light bar. I am actually buying a clear acrylic cylinder to put my light into. Alec has had luck with this also, maybe he can suggest the particular light to use.</div><div>Hank</div><div><br></div>
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On Thursday, February 1, 2018, 2:06:41 PM MST, Rick Patton via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:
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<div><div id="yiv3053752749"><div dir="ltr">I have been experimenting with my LED exterior lights which is a field I know nothing about which makes it even that much more frustrating and wanted to get feedback from those who have had success so far using them.<div><br><div>I was planning on using incandescent lights but everyone I talk to say that LED is the only way to go. I guess my reasoning for staying with incandescent was that it was a no brainier for me but I liked what I heard about LED. I initially figured that if 10 lumans is good 10,000 is much better but I am finding out that once you get up to that high a luman, a lot of things kick in that you have to deal with!</div><div><br></div><div>I also am thinking that I can probably get away with a heck of a lot less lumans due to the visibility that we have here in Hawaii so maybe all I need are 5,000 luman lights which put out a lot less heat and don't have to deal with some of the issues that a 10,000 luman light would.</div></div><div><br></div><div>All input appreciated!</div><div>In the dark in Hawaii! not to mention fake missile alerts!!</div><div><br></div><div>Rick</div></div></div>_______________________________________________<br>Personal_Submersibles mailing list<br><a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div>
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