Q8 Mod to 3v XHP50.2

LED Flashlights – General Info 18650 Flashlights
1

Hello Everyone,

Anyone here have a lead on someone who could mod my BLF Q8 to 3v XHP50.2 LEDs? If anyone has an idea of what that would cost ... I'd love to know that as well.

(BTW I'm located in Texas)

Thanks!

2

MCPCB if you can find it still sold like 5$ plus shipping
the website seems down atm
https://led4power.com/2017/08/11/product-release-ilc-1-illuminated-tailcap-moduledrop/

I have here a started mod to XHP50.2 I need to asseble, the MCPCB is already reflowed
you need also a tool to widen the reflector openings like 0.75mm

3

Ok, thanks for the info. I think I'd prefer to have someone do the mod the right way, rather than experiment on my own.

4

more like 1.2mm as the LEds werent 100% centered on the pads

also upgrading the MOSFET to an Infineon BSC009 might be a good idea

5

It wouldn’t be too hard. Hard part is you’d need to find a mcpcb for 5050 type emitters, then reflow the emitters onto it. The driver would work as-is since it’s meant for 3 volts. You may have to dream out the reflector holes for the bigger emitters as well.

6

you have to ream out the rerflector for sure and need gaskets that have upper diameter like the LED

I will mod one with my driver, switch board and Anduril, you can make me an offer

7

Sofirn sells them:

https://sofirnlight.com/4xhp502-led-soldered-on-q8-mcpcb-p0119.html

5000K back in stock in three weeks or so.

8

I’d love to have one of those. Especially in 5000k xhp50.2!

9

Very nice find!

Would purchasing this mcpcb make the mod a simple swap or would it still require some craftiness?

10

As Lexel said, you need to drill open the reflector bases and have gaskets for the 5050 format. I think you need to unscrew the driver to access the screws holding the reflector on the MCPCB. After that it is soldering work. I’ll take pictures when my board arrives, but that will likely take months.

11

I’d love to have one of those.

12

I built 3 of them so far, 1 for me and the others for my brother and a friend, using the Led4Power boards…it is a premium board for sure… :+1: I replaced the stock Q8 FET with the Infineon FET a no-brainer… 18awg leads…18awg bypassed springs, brass screws… ect….

Here is a pick showing the differenc between the 5200k and the 6000k 50.2 3v emitters…

Hope you like tint shift in the lower modes… :smiley: In use Outside it’s really not bad, but I run it inTurbo since it’s mostly a TOY…

Can you guess which side the 5200k Q8 is on… (the 6000k is on the left…)

I used a champher bit to open the holes in the reflector a little at a time, until the champher angle captured the edge of the 4 LED pads to center the reflector…

I used the drill press to lock the depth so each of the 4 holes would be at the same depth… I have a small vacuum that I hook up when enlarging reflector holes. suck up the chips dust and debris while machining…

It is a very powerful light with VTC5A’s I have hit 16000+ Lumens with the 20S batteries 17000+

Naturally it gets HOT Fast and Sucks the batteries DOWN Fast… a fun toy…

13

I also built one. I asked Sofirn if they would sell me a custom MCPCB with the emitters mounted and they were happy to - they created the listing on their website linked above for me, and I think a few others have cottoned on now :slight_smile:

It’s an absolute weapon now. In my Maukka-calibrated lumen sphere it went from 6,400 lumens with the old XP-L HDs to 16,600 lumens with the XHP50.2s. Not a bad increase for $20ish! :slight_smile:

14

So did you just switch out the MCPCB? Or did you have to bore out the reflector holes? Or make other adjustments?

15

I had to bore out the reflector holes using a countersink drill bit. Easy enough as the reflector is made of metal. I also had to enlarge the central hole in the new MCPCB so that the bolt fitted through into the reflector. The rest is just soldering :slight_smile: