What did you mod today?

Flashlight Modding and DIY Parts
5068

Swapped my UTorch UT01 emitters, the nice tint emitter went into the unit with the more reliable switch

Swapped my Sofirn SF14 emitters, the nice tint emitter went into the unit with the more reliable driver

Funny to see the differences, one of my UT01s has a screw-in reflector, the other has an unthreaded reflector and inner side of the head. The SF14s bought month apart have a different switch and a different sized rubber cap. The walls of the raised part of the tailcap is also thicker on the one with the larger rubber boot. Too bad they didnā€™t take the opportunity to make the groove on the head side of the tube wide enough for the clip to snap reversed

5069

I got a few A01 with the new next mode memory today. The new 219C looks very ugly compared to the older 219b lights, they appear much brighter but also they donā€™t have that nice warm rosy glow that I prefer on the older A01s.

[Album] Astrolux A01 next mode memory removal

I followed this tutorial but it doesnā€™t seem to work very well for the lights I got. They all need to have a LOT of graphite on them, I covered one completely in graphite on the top and it did nothing. I added some to the side (away from the red) and it did seem to work. I had covered all of them at the top with graphite and some at the side to make it work.

I have one that doesnā€™t seem to work with the graphite mod at all. It simply refuses to lose the next mode memory.

5070

I put together a Convoy M2 with a XM-L2 7A3 CRI90 emitter.
I first installed a Convoy driver with Biscotti, but I found the output a bit on the low side. So I put in a BLF A6 driver with out any spring bypass I get 4.98A on turbo and 2.05A after step down.

5071

^ that is still one of my favourite emitters and I keep a small stash of them for future use. They are not efficient to todays standards, if pushed hard they make close to 1000 lumen OTF (compared to 1500 lumen at the same current from a cool XP-L), but you get a fantastic illumination. I have one in a Kaidomain K2 host with the same driver and it is my go-to flashlight for camping.

5072

I have them in my 2 SR-mini and they still are the best CREE for ambient lighting

5073

I have one in a Skilhunt H02 with a Lexel build TA driver with NarsilM, one in a Eagle Eye X7 I bought from a friendly modder here on BLF :wink: , a triple UniqueFire UF-1408 with a MTN-22DDm driver, and when led4power puts the new Q8 MCPCB up for sale I will put some in a Q8.

5074

Oh and they are a really good option in Olight S baton series behind their unique TIR (which doesnā€™t like 3535 LED at allā€¦)
I put some in my S2, S2R, S1R, S1Aā€¦

5075

Got a red sofirn SP10B today for my daughter, real nice light for the 10 dollars with a great moonlight mode. Put a 4000k 219c in it and also in my D25c ti.

5076

Put some LH351Dā€™s in some lights.
The first one was my Emisar D1ā€¦ and the LED didnā€™t like the Turbo mode AT ALLā€¦ it turned blue :frowning:
Maybe my reflowing wasnā€™t really well doneā€¦

Fortunately, the other three are in more reasonable configurations :

From left to right : S2+ Biscotti 8*7135, Utorch UT01, Lumintop Tool AA Biscotti 5*7135
The far right is my T10 with 219B

I really like the tint and CRI of these little gemsā€¦ I have to buy more when theyā€™re available

5077

:heart_eyes:

5078

@X3, yep that is was probably happened. Bad reflow job. The LH351D is a bit tougher of an LED compared to the XPL HI, so should not have turned blue.

5079

I have the same experience with the single LH351D no matter how careful I reflow they turn blue. The four I reflowed and put in my D4 didnā€™t change color.

5080

Do you use Lexelā€™s suggest about 1Ā°/sec temperature raise speed?

5081

I use a hot air reflow gun slowly raising the temperature, if it 1Ā°/sec I donā€™t know :slight_smile:

Maybe I am not careful enough, but I donā€™t have the same issue with other emitters.

5082

Thats simple, if it takes near 200 sec it is ok, if less than two minutes this is too fast.
Not only about samsung, we heard many issues with xhp 50.2 for same reason.

5083

Is it proven that the XHP50.2 issues are caused by not following the correct reflow timings? I did not know that. I even have not seen any evidence of not following the correct reflow timing having an effect on any led performance. Iā€™m not saying that there is no effect, but at least I have never seen it demonstrated.

I have a XHP50.2 dying in a flashlight with a Kaidomain 3A boost driver, and I have a XHP50.2 living a happy life at 5+ amps in a driver-less 2x18650 flashlight. Both leds were reflowed by me at the correct temperature but nowhere near the correct timing. Instead of a reflow effect, my feeling is that that KD driver causes some sort of peaks that especially the XHP50.2 is sensitive to, while in direct drive there is no such sudden load. But it is just a feeling based on just two leds, I have no hard evidence.

5084

I cant make any long-time conclutions, I just dont have enought equipment for tests. I would prefer to ask maukka and Lexel.

5085

Received the uni-t ut210e clampmeter couple days ago.
Measured the tailcap current again today. Used a 22 gauge silicon wire, it was probably a little bit too long though.

Measured 7 amps, that makes more sense. Still a little bit on the lower side but for that I blame the cell I used and the longer wire.

5086

I use 12Ga Turnigy wire for my loop with the Uni-T clamp meter. I think itā€™s 6ā€ long, soldered gold plated banana clips on each end.

5087

I use this, before use everytime I sand the contact surfaces: