Interest list: Q8 MCPCB with XHP50.2@5000K [DTP only available now at LED4Power]

[Thro]

Intrested, can the Narsil version be flashed to Anduril ?

[TMaxxJJ]

@Thro

Intrested, can the Narsil version be flashed to Anduril ?

It can indeed yes, very easily.
Undo the two driver retaining screws, there’s enough length in the wires to fold it back, clip on to the MCU, flash. TK has a Q8 hex file in her repository so if you already have the hardware you’re good to go!

I’ve also done this XHP50.2 mod and it does turn it into a bit of a beast. I used the led4power Q8 MCPCB however, so did the t-bar mod instead of drilling the centre hole out. I got the XHP50.2’s from sofirn (listed as 5300-5700k). With regards numbers, I’m seeing about 14500 lumens. That’s with stock driver, stock screws, and just a spring bypass.

[KawiBoy1428]

@hcanning

I’ve done this mod (I was the person who asked Sofirn to make me an MCPCB with 3V XHP50.2s so I think I started the craze ). A few notes:

It turns the light into an absolute weapon. I measured 16,800 lumens with my Maukka-calibrated sphere. This is up from 6440 lumens with the old XP-Ls. Other “performance” mods on my light include bypassed springs, brass driver and tailcap screws, Anduril firmware, AR glass.

Work involved with this mod is as follows:

- Enlarge the holes in the reflector - this is easy with an electric drill and a countersink bit. It’s a metal reflector so unless you’re being really ham-fisted, you won’t break it. And if worse comes to worst you can buy spares anyway.

- Enlarge the central hole in the MCPCB so you can get the bolt through that holds everything together

• You will need spacers for the XHP50.2s - I asked Sofirn to include them

Heat-wise, its thermal mass really helps. It takes a while to get painful to hold. Some rough measurements with an IR thermometer on the body:

23c room temp
30c at 30s
32c at 60s
43c at 2.5mins, around 64c internal temp

Well that backs up my readings…

This reading on Samsung 20s ….hardest hitting 18650’s I have seen so far…

My reflector sits on the board… I didn’t use centering rings at all…but I had to use a thicker o-ring to seat everything…

[hcanning]

@KawiBoy1428

@hcanning

I’ve done this mod (I was the person who asked Sofirn to make me an MCPCB with 3V XHP50.2s so I think I started the craze ). A few notes:

It turns the light into an absolute weapon. I measured 16,800 lumens with my Maukka-calibrated sphere. This is up from 6440 lumens with the old XP-Ls. Other “performance” mods on my light include bypassed springs, brass driver and tailcap screws, Anduril firmware, AR glass.

Work involved with this mod is as follows:

- Enlarge the holes in the reflector - this is easy with an electric drill and a countersink bit. It’s a metal reflector so unless you’re being really ham-fisted, you won’t break it. And if worse comes to worst you can buy spares anyway.

- Enlarge the central hole in the MCPCB so you can get the bolt through that holds everything together

• You will need spacers for the XHP50.2s - I asked Sofirn to include them

Heat-wise, its thermal mass really helps. It takes a while to get painful to hold. Some rough measurements with an IR thermometer on the body:

23c room temp
30c at 30s
32c at 60s
43c at 2.5mins, around 64c internal temp

Well that backs up my readings…

Is that a 1:1 lux:lumen reading (divided by 10 obvs)? If so, that’s scarily accurate to mine! :o

[KawiBoy1428]

@hcanning

@KawiBoy1428

@hcanning

I’ve done this mod (I was the person who asked Sofirn to make me an MCPCB with 3V XHP50.2s so I think I started the craze ). A few notes:

It turns the light into an absolute weapon. I measured 16,800 lumens with my Maukka-calibrated sphere. This is up from 6440 lumens with the old XP-Ls. Other “performance” mods on my light include bypassed springs, brass driver and tailcap screws, Anduril firmware, AR glass.

Work involved with this mod is as follows:

- Enlarge the holes in the reflector - this is easy with an electric drill and a countersink bit. It’s a metal reflector so unless you’re being really ham-fisted, you won’t break it. And if worse comes to worst you can buy spares anyway.

- Enlarge the central hole in the MCPCB so you can get the bolt through that holds everything together

• You will need spacers for the XHP50.2s - I asked Sofirn to include them

Heat-wise, its thermal mass really helps. It takes a while to get painful to hold. Some rough measurements with an IR thermometer on the body:

23c room temp
30c at 30s
32c at 60s
43c at 2.5mins, around 64c internal temp

Well that backs up my readings…

Is that a 1:1 lux:lumen reading (divided by 10 obvs)? If so, that’s scarily accurate to mine! :o

Yep….This is the readings off of my 4” T/A maukka calibrated tube… our readings jive… imagine that

[Unheard]

@flightless22

I’m interested, but it’d be nice to know what bin the leds are.

I asked for exact product code of “5300-5700K” and what bin 5000K would be, if they can source it. Will keep you updated.

[Tom_E]

Besided the Infineon FET quoted above, another favorite of mine is the SIRA20DP:

https://budgetlightforum.com/t/-/46241/1165

https://budgetlightforum.com/t/-/46241/1526

I've been using the SIRA20DP more as of late.

[Unheard]

Barry wrote about a Q8 Pro prototype using 3V XHP50.2:

What type of light would you like the next BLF Special Edition to be? As in developed by us over a year or so from scratch.... like it used to be

sofirn tried 3*21700 prototype which is too big, much bigger than Q8 But Q8 Pro with 4*XHP50.2(3V), SP36 Pro with 4* SST40 are tested in the lab, both have USBC charging port. I think SP36 Pro will be available soon.

For the first (and probably last) batch of “5050 MCPCBs”: They are maybe reworked from ordinary Q8 MCPCBs, don’t know for sure. What I know is that 6 users having interest is surprisingly few :weary: . I’ll personally try to catch one of the LED4Power boards when the shop reopens next year. Will be a clearance sale, hope we all will get one.

[808Hi]

In for one.
thank you

[Sidney_Stratton]

It should be noted that this thread may be not be heard at Sofirn. After some exchanges with Lan, the MCPCB that was made with XHP50.2s would have been modified 3535 footprints. Too time-consuming and effort.

As noted above, Barry mentions of some prototypes of the Q8 and SP36 with higher output LEDs. Best we second the initiative and voice our interest in the “What type of light would you like the next BLF Special Edition to be?” thread. link

[Unheard]

bump

[Unloco]

Count me in.

1pc Q8 MCPCP with 4 XHP50.2 3V (mounted).
If there are bare Q8 5050 MCPCBs, 2pcs… maybe more.

[ReManG]

Put me down for 1 please. 5000K preferred.

Would love the XHP50.2 to be done in warmer tints, but it’s cree…

[Unheard]

@ReManG

Would love the XHP50.2 to be done in warmer tints, but it’s cree…

No better tints for the 3V version AFAIK. And up to now, Sofirn wasn’t even able to source another batch of them:

https://sofirnlight.com/xhp5023v-p0060.html

If Sofirn produces populated boards, we might have to decide for the 5300-5700K version. But then, it’s about power, isn’t it .

[PBWilson]

I am officially in if the MCPCB is mounted with the four leds.

Will it come with centering rings?

[Unheard]

@PBWilson

Will it come with centering rings?

Not really an update, but that’s the current state of affairs: Neither me nor (I think, haven’t heard from him since quite some time) Sydney are in contact with Sofirn in this matter. There was a clear ‘no’ to XHP50.2 MCPCBs (former ones were reworked original boards), and so we can only hope for the Q8 Pro project and that the geometry will stay the same. I concur it would make sense to sell gaskets along with the boards. In case the lights are similar enough, I’d even ask Sofirn for complete sets (board, reflektor, gaskets).

[Sidney_Stratton]

I would hope that Sofirn is still in development. From some exchanges, they may offer a complete Q8.

My queries and feedbacks:

As I had ordered the MCPCBs with XHP50.2 (there was a window of opportunity on Sofirn’s WebStore) and later was cancelled. Pressing the matter, from Lan Lee (August 27th):

It is not only because leds are out of stock. It is not easy for Q8 mcpcb suits XHP50.2(3V) 5000K leds. XHP50.2 leds are a bit big for Q8 MCPCB. Workers can’t make it.

However, I took it up with Barry that the Q8 was successfully fitted with the XHP50.2s and there are no known issues with the light. Also, that Sofirn should offer some upgrades on “power lights”, to which he replied (Sept 3rd):

We are going to make a SP31 UV and SP31V2 with LH351D 5000K version. Also, there will be a 10180 mini keychain light coming, Q8 Pro, SP36 Pro etc. Hope they will be available soon.

Lan Lee had previously stated (Aug. 12th):

Thanks for your reminding. I forgot to reserve this thread. But now the number of people is not enough. Factory won’t produce it if market demand is not rich.

As I was re-instating that some 12+ members that are interested in such “[link]”:[old Interest list, do not use] (was: XHP50.2 (3V) boards for Q8 no longer available) - #12 by Sofirn (previous interest list).

I found the response was too presumptuous. So if there is a demand, Sofirn should look into the matter.

Where else can we find the willingness of a manufacturer that states in their signature ‘If you wish to have a light made, please contact us’?

Edit:
Just now sent a PM to Barry about the outsourcing of those 5050 boards. It has been 2 weeks, should be about right.

[CrashOne]

Interested if it comes with 3V XHP50.2’s installed

[Quad-XXX]

Hello,
I’m in. Thanks

[Zappaman]

I’d buy the MCPCB with or without leds on it. But a host “kit” with the correctly milled reflector, MCPCB w/leds, correct centering rings, and BETTER driver would be worth a lot more to me.

Did I see something called a “Q8 Pro” listed in a comment up there somewhere?

- has a nice ring to it! (kinda like the “SC31 Pro”…)