Build Thread: Triple XHP50 Monster (done)

Flashlight Modding and DIY Parts Featured Mods
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As the title says, here’s the build thread for my triple XHP50 light, will update with pics as I go on :slight_smile:

The host is a SkyRay 3xT6 (looks like a niwalker 750n1 clone but with triple reflector.) really nice quality, not matte anodising but not that shiny stuff either, and the threads are smooth.

its heavy, good mass in the head, and the body looks hefty.

http://www.cnqualitygoods.com/goods.php?id=1720

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I am using:
3 XHP50 (not XHP70 due to heat) N2 E3 5500K
copper MCPCB (16mm)
Arctic epoxied down to the pill
LD-2 Driver with moonlight enabled, and the li-ion parts for 2 series 18650’s (them parts are tiny! i lost like 5! so fiddly but i did it :laughing:
LD-2 is at 6A, again due to heat!
no AR glass yet, but i think i need it, the glass is not great!

Measuring 5.96A at the tailcap

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assembled, the bezel is actually quite nice, it has a matte finish, looks like a bead blasted effect

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its on! (moonlight!)
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emitters on, through welding glass
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It’s done!
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Awesome build!! Now I want beamshots!! How many lumens does it put out?

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It’s doing 5.96A at the tailcap! So if someone can work out what 3 XHP50’s at 5.96A is you’ll get the lumens, but over 6000 I would think!

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2amps to each, so about 5000 I think. I am planning on doing almost the same thing, but you beat me to it!

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So what would be needed to get it to 2.5-3.5A per XHP50?

Or would the light become heat-soaked too quickly?

And if I can derail the topic a little, how many amps to 3x XHP70s could a TK75 support without a ridiculous fall-off from turn-on to 30 seconds?

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How is the driver coping? Have you added any further cooling to protect the driver from the heat?

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I think the driver is struggling,it did about 7 seconds on highest mode and shut off, I thought I would try and install the NTC sensor, now it does about 11 seconds on highest mode then shuts off, it’s wrapped in thermal tissue and silicone cubes, but still gets really hot

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Thanks for showing us your mod James. There must be a million of these lights out there that are ready for modding, mine included.

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So the driver thermal shut down is working well.

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I and two friends had this content://com.sec.android.app.sbrowser/readinglist/0710203457.mhtml. and they had to be rebuilt to work with the xhp 70 and the heat is definitely and issue the xhp50 is a better emitter I feel to get any type of throw out of it and manageable heat dissapation

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Nice build!

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Yes, what a monster. I wonder if this can be done to one of the TrustFire TR 3T6 that I have. The second one I bought was a very poor performer and I only turned it on once.

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Nice mod. Congrats :)

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Update:

I’ve filled the pill and driver with more silicone cubes, it’s gone from about 11 seconds on high to about 20, I took the driver out and tested the run time with the driver out of the pill, it was about 10 seconds and it was HOT! Burn your finger type hot, the driver is getting pushed far too hard but the leds are still quite cool!

Might have to go direct drive?!

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I’ve got it to 30 seconds on high, packed with thermal cubes (about 13) driver is as far away from the leds as possible

Think I’m Going to stop now before I fry an expensive driver!

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What are thermal cubes? I have an idea of what they are, but I’ve never heard of them before.

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http://intl-outdoor.com/thermal-conductive-pad-10x10mm-5pcs-p-411.html

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Somehow I completely forgot about expander boards from LD-1 era. For LD-2 this should be much simpler,because just mosfet needs to be on mcpcb,and mcpcb for 1w generic leds is great of the shelf solution.Idea is to put mosfet on mcpcb and mount\glue it to flashlight pill or body. This way allowed dissipation would be much higher,as long as that mcpcb is mounted somewhere in flashlight.Driver wouldn't overheat because source of heat is not on driver pcb anymore. I'll do some tests and see how this works.

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Hmmm, maybe mount it outside on struts? Very cool …