[PSUBS-MAILIST] Oil Comp Lessons - so far

[Jon Wallace via Personal_Submersibles]

 Interesting idea.  I will look into this.
    On Thursday, July 4, 2019, 01:21:15 AM EDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Jon,I looked up your harbour freight light & it was saying 900 & somethinglumens.Cliff is getting 10 X as many lumens for a light about the same size.This is probably because there is a limit as to how much heat can be dissipated in a small light that is air cooled. You may be able to use that light housing & put a more powerful led in it,but it would be for underwater use only with maybe a 10 minute out ofwater use. Just wire it to an led driver inside the sub. I saw a post recently of Brian's modification of a similar light by attachinga hose fitting to it.Alan

On 3/07/2019, at 9:43 AM, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:


Decided to oil compensate my RoadShock LED from Harbor Freight today, with a few surprises that ultimately caused me to abandon it for now.
First, umm...well, did ya all know that Marvel Mystery Oil has a ruby red color to it?  :)  :)  I have to admit, I am well aware of the product but have never used it.  Since it was highly recommended for oil compensation I purchased some and just assumed it was a clear liquid like mineral oil packaged in a red transparent bottle.  Nope.  Imagine my surprise when I poured it into the LED fixture and discovered the gorgeous ruby red color of the oil.  Mmmmm....pretty.  Anyway, I went ahead with the compensation just to see how everything would react together.  It went together well and if you saw my video on this LED fixture, the seal worked perfectly as I expected it would.
Second, kudos to Alan, he was spot on regarding the wicking of oil through the wiring.  And it didn't take but minutes in this case.  I did not take the unit apart to the point of seeing how the wire enters the housing and I'm sure this can be modified, however I noticed within minutes there was oil escaping through the power connector pins.  See attached photos.  That shiny side inside the power connector is not nice new shiny plastic, it's Marvel Mystery Oil seeping through (I suspect) the outer wire insulation.
I think my experimentation is done and I'm ready to endorse the Pronk LED modification to happy lighting under the sea.  You know, some of us have to learn the hard way.



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