What did you mod today?

Yep, me to. :+1:

Quick test on Sam 30Q's as-is, calculating lumens, I got 34,200. It's bright. The outdoor test seems to have burnt out the 7135 of the FET+1 driver. The FET is a SIR404DP, but now, turning on the light I get about the one 7135 equivalent in output, but ramping of the FET still works. Running Narsil using 2 green LED's next to the switch as the indicator LED.

16 XHP50 K2 bins, from Cutter. 22 AWG Teflon coated on the Noctigons, 3 to 1 reduction to 18 AWG wires.

Might just go with the SIR404DP FET only now. Guess a single 7135 can't take the heat for some reason...

Wow, super bright. What’s the beam like?

Uhhh, good Q. Mostly only remember the brightness - it was spectacular. Can't check it now, but did have a dark spot in the middle on a white wall. Outdoors it was a super wide beam of light going upward. Too chicken to light up the block though .

Not bad for an UltraFire. I actually beat the claimed lumens of 20,000 .

Ha, nice. For a second I was afraid it was going to be a reflectorless mule. What do you have on there, S2 or so sized reflectors?

Well that’s an understatement :smiley:
Nice :+1:

Very nice, Tom :smiley:

Noce work Tom ! I was waiting for this build since the day you mentioned you ordered the Leds :smiley: .

Probably stock reflector . Using S2 or similar reflectors would be awesome…

wow, extremely impressive Tom, looks like a very neat assembly, and that is 2000 lumen per led which is a big achievement for a relatively compact multi-led light.

Would like to see that beam in person :partying_face:

Tom. That is just plane nuts. What a fantastic effort and execution. Hope the driver problems get solved. :beer:

Thanks all! I'll have to see what I can do for beam pictures. These are E2's, so 5700K or so. I'm gonna try to take lumens and throw measurements this morn.

烽燧 LiteFlux LF2XT

Cree XP-E Q4 Neutral white LED
Change to……
CREE XQ-E Hi R2 Neutral white LED

with XP-L Hi

pretty little LED

AAA (middle)

Nice to see a mod with the XQ-E ! R2 sounds like a good bin. That Liteflux flashlight is from before I was a flashoholic :slight_smile:

They are actually bigger than S2 reflectors at 21.2 mm diameter with the total head width of 99.2 mm. S2's are about 18-19 mm. I used 16 mm Noctigons with only the 5 outer most needing a slight sanding to fit at the edge.

Measured throw from 5 meters: 155 kcd (787 meters)

So it's a thrower, I mean a flooder or throoder? This is why I wanted to go big with a head like this - I knew the throw would do well, but didn't expect to break 100 kcd. Ganging triples/quads is easy, like the Meteor or Vinh's custom 30K+ monster, but it's mostly a flood light then.

Why not just go with a single COB led and get the same lumen output from a single chip + large reflector?
Pretty sure it would be more efficient than multiple XHP50s, so less heat and battery drain.

Pretty impressive monster you got there Tom. Surprising results also for such a shallow reflector. Sheer power does the job. How much did it cost to build this?

Dunno much bout COB's. The voltage of XHP50's is perfect for the 2S3P batteries. I'm not an EE and can't custom design boost or buck drivers, for sure.

Most of the cost is the LED's - roughly $150 $140 for bare LED's, $22 for the Noctigons, ~$80 for the host (can get it for $62 or so now), maybe $15 or so for the driver and wires, so $257 total.

I just modded my perfectly working Utorch UT02 into a fancy paper weight.

I wanted to change the resistor to gain more output. First I had a hard time getting the driver out ( should have stopped there) found the resistor, it was so tiny (or stopped here). Then I remembered when I tried to solder moonlight parts on a LD-2 driver (definitely should have stopped there). When ahead anyway and ended up with a dead flashlight. So from now on re-flowing emitters and changing drivers is all the modding I will do, that is of course only until the memory of this failure have faded and I think “how hard can it be”.

I think there is a what did you break today thread. If not there should be. I have a fair amount to contribute to it.

Don’t give up khas. Get one of these, changed my outlook on what can be done.

Modded mine with dedomed xp-g2 and TA driver running Narsil , i couldn’t be happier … making 292kcd now :smiley: