Interest list: Q8 MCPCB with XHP50.2@5000K

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Unheard
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Interest list: Q8 MCPCB with XHP50.2@5000K

This is an interest list of all BLFers wanting Sofirn producing a MCPCB for the Thorfire/Sofirn Q8. The MCPCB shall be populated with 4 x XHP50.2 LEDs at 5000K. Your entry is binding. No variation for now as it might be difficult enough to raise enough interest.

(Q8 modding thread )

Read more from modders:

http://budgetlightforum.com/comment/1688148#comment-1688148

http://budgetlightforum.com/comment/1688180#comment-1688180

Unheard 1
Nooner 1
Sidney Stratton 1
tekwyzrd 1
JIGHEADWORM 1
Thro 1
808Hi 1
Unloco 2
ReManG 1
PBWilson 1
CrashOne 1
Quad-XXX 1
Zappaman 1
808Hi 1
Tom E 3
Havok 1
Rat_Racer 1
Sivy 1
KawiBoy1428 2

Additional info (please correct me via PM if necessary to keep this list as clean as possible):

  • For optimal performance, the driver can be modified, if I’m not mistaken, this is not a must. Springs should be bypassed. It is reported FET gets very hot and should be replaced. However, modded lights ran without this mod and thus far no defective drivers were posted. A new FET can increase current.
  • The light will develop a lot of heat with that LEDs, it is not a muggle light. OTOH, it has quite some thermal mass and some means for thermal regulation (needs to be configured).
  • When Sofirn sold this board (populated), it was about $22.
  • You need some tools and a soldering iron.
  • If not provided by Sofirn, you’ll need 5mm gaskets for the larger LEDs. They’re widely available, but I hope Sofirn will provide them.
  • LED openings in the reflector need to be enlarged.
  • New MCPCB needs a center hole (hope Sofirn does it).
Edited by: Unheard on 09/19/2020 - 08:26
fireblade893
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Have you got an estimated cost for this?

Sounds good but can the Q8 handle the heat from 4x XHP50’s?

Will the standard driver cope with the current as well?

Unheard
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fireblade893 wrote:
Have you got an estimated cost for this?

Sounds good but can the Q8 handle the heat from 4x XHP50’s?

Will the standard driver cope with the current as well?


Answered in OP.
Nooner
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I’m in for 1.

Thank you for your efforts Unheard!

Sidney Stratton
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Mark me in!

Scallywag
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Note that you may have to enlarge the reflector holes to fit the new LEDs+gaskets.

Old Lumens Contest 2020 - Hand-made light category

ZL SC62(w) | Jaxman E2L XP-G2 5A | Purple S2+ XPL-HI U6-3A | D4 w/ Luxeon V | RRT-01 | Purple FW3A, 4000K SST20 | Baton S1
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PBWilson
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I’ve got two Q8 lights from the first sales. They are running Narsil so will they need to be reflashed?

Will they be actual 5000K or the 5700K that seems to be available now?

I forget if they’re easy to disassemble. Does it involve poking and prying and breaking glue joints or is it more straightforward?

Unheard
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PBWilson wrote:
I’ve got two Q8 lights from the first sales. They are running Narsil so will they need to be reflashed?

Will they be actual 5000K or the 5700K that seems to be available now?

I forget if they’re easy to disassemble. Does it involve poking and prying and breaking glue joints or is it more straightforward?


Sofirn said 5000K will be available again. That’s all I know for now.

Narsil contains some thermal management code. It ramps up to max and lets the user decide when to step down. I don’t know how well it will work, however.

I have never opened a Q8. To the best of my knowledge, driver and reflector have screws, nothing glued. But that’s hearsay.

Sidney Stratton
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Narsil will work (I would hope so as is mine).

Need to ream the reflector to 7 mm dia. and add new gaskets (XPL XM-L footprint; 5050). Also, a new center hole on the MCPCB for the retaining screw. No glue, all screwed.

NarsilM can have the thermal setting quite high – I believe you can disconnect it too (never tried).

Edit; corrected the XPL to XM-L – Thanks Scallywag!

tekwyzrd
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I’m in for one.

Nothing travels faster than the speed of light with the possible exception of bad news, which obeys its own special laws. – Douglas Adams

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Count me in

Sidney Stratton
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As PBWilson mentioned, there are some 5700ºK 50.2 on Sofirn’s WebStore. I’d be ok with that tint if 5000º can’t be had / delayed production.

It’s for throwing and shedding a lot of light; not necessarily to look at things up close. Have other flashlights for that.

Unheard
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Sidney Stratton wrote:
As PBWilson mentioned, there are some 5700ºK 50.2 on Sofirn’s WebStore. I’d be ok with that tini if 5000º can’t be had / delayed production.

It’s for throwing and shedding a lot of light; not necessarily to look at things up close. Have other flashlights for that.


Me too. If the 5000K can’t be have, I’ll PM around if 5700 is ok for the participants.
Cythras
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I’m potentially interested, but would be much more so if the MCPCB’s were sold alongside reflectors with enlarged holes. Don’t really want to muck around with that, and the option to return back to a stock config whenever would be nice.

Sidney Stratton
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@Cythras

Sofirn has stock reflectors for Q8 for ~$7.50 USD https://sofirnlight.com/reflector-for-q8-p0073.html

Q8 is one of the easiest to mod. Nice and big, parts easily replaced. But if you’re not comfortable with modding, well…

flightless22
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Here’s the official (Q8 modding thread ) It needs a of tweaks to get the best performance. Adding to whats already been said. The driver led wires need to replaced with thicker ones. The tailcap screws need to be replaced with brass screws and the FET needs to be replace. Hopefully someone with more experience can fill in the details.

Here’s a quote from Tom E

Quote:
I don’t know the amp draw offhand of a XHP50.2, but it’s high. The stock FET is not so good, so yes a SIR404DP would be better. Actually any of those FET’s from a driver made in China is probably a fake, but most of the fakes actually perform fairly well.

Not sure how much that effects the brass contact ring, however. I’d be sure the brass ring is clean and properly treated. I’d sand it smooth, maybe apply thin amt of conductive protective grease, like NO-OX-ID.

The better FET’s, are there are a few, should stay cool, and are rated up to 60-100 amps or so.

I’ve been using these more recently: BSC009NE2LS5ATMA1, by Infineon, https://www.mouser.com/datasheet/2/196/Infineon-BSC009NE2LS5-DS-v02_00-E.... Actually it’s been a couple years I’ve been using these. There may be better ones now?

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

Sidney Stratton
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Didn’t KawiBoy mod one? Anyways, from some Djozz tests, if the 4 emitters were to give 12,000 lumens, that would be “only” 32 amps. But if the conditions are ideal and pushing some 20,000 lumens, some 84 amps are going thru. The tests results for a 6 volt emitter, at 3 volts I doubled the current values (ballpark figures). If the FET can take it, then some other component will be frying. Any little resistance and much heat.

So basically, there would be some mods to push the LEDs to that level. I don’t know about the FET, but the tail spring bypass with some brass screws has usually been done on this light (anyone pushing the envelope). And as for the wires, that shouldn’t be a problem – lots of room in that cavity.

If the FET is the bottleneck, someone would have to chime in and give some before / after outputs.

And coming down to earth, pushing 12,000 lumens isn’t a bad deal for this light. IFAIK KawiBoy got some 16k lumes. I might never find it though (lengthy post).

Scallywag
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Sidney Stratton wrote:
Narsil will work (I would hope so as is mine).

Need to ream the reflector to 7 mm dia. and add new gaskets (XPL footprint; 5050). Also, a new center hole on the MCPCB for the retaining screw. No glue, all screwed.

NarsilM can have the thermal setting quite high – I believe you can disconnect it too (never tried).


Minor correction: the XPL footprint is 3535, the XM-L footprint is 5050.

Old Lumens Contest 2020 - Hand-made light category

ZL SC62(w) | Jaxman E2L XP-G2 5A | Purple S2+ XPL-HI U6-3A | D4 w/ Luxeon V | RRT-01 | Purple FW3A, 4000K SST20 | Baton S1
Boruit D10 w/ Quadrupel Fet+1/Anduril | EagTac D25C Ti | DQG Slim AA Ti | Jaxman E3 | UF-T1 by CRX | Olight S15 Ti | Nitecore EX11.2
L6 XHP70.2 P2 4000K FET+7135 | Jaxman M8 | MF02 | Jaxman Z1 CULNM1.TG | Blue S2+ w/ ML Special | Thrunite T10Tv2
Supfire M6 3xXHP50.2, Sofirn C8F, Unfinished: Sofirn SP70, IYP07/Tool AAA hot-rods, Jetbeam E3S
Others: Nitecore EC23 | Nebo Twyst | Streamlight ProTac 1AA | TerraLux LightStar 100

hcanning
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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 Big Smile ). 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

Unheard
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Good information, thanks a lot Sir Thumbs Up

Linked your comment in the OP.

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Intrested, can the Narsil version be flashed to Anduril ?

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Thro wrote:
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.

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hcanning wrote:
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 Big Smile ). 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…

KB1428 “Live Life WOT

hcanning
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KawiBoy1428 wrote:
hcanning wrote:
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 Big Smile ). 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! Shocked

KawiBoy1428
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hcanning wrote:
KawiBoy1428 wrote:
hcanning wrote:
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 Big Smile ). 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! Shocked


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

KB1428 “Live Life WOT

Unheard
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flightless22 wrote:
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.
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Besided the Infineon FET quoted above, another favorite of mine is the SIRA20DP:

http://budgetlightforum.com/comment/1212935#comment-1212935

http://budgetlightforum.com/comment/1367663#comment-1367663

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

 

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

http://budgetlightforum.com/comment/1691673#comment-1691673

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 Tired . 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.

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In for one.
thank you

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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

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