i think we can make a group buy for this led. This led will attract a lot of attention
I’d rather see a GB for Boost HX. Or the 2mm² white flat.
Came home today from 2 weeks in France, got 3 of these LEDs in the mail. 
Just put one in a cometa. Will post results when I have dependable measurements.
Looks good! Let us know when you’ve got numbers.
Just ordered 4 pieces. Sure it will be a while before I see them. Looks interesting and can’t wait to experiment with them.
Got my 3 samples…let’s mod !
Thanks for starting this thread and the comprehensive summary in the OP!
Geuzz, can’t wait to hear more about your Cometa mod. I read it is hard to focus it in the Cometa. Did you have any issues focusing it?
Ok. I went into my cold shed for you guys and have some measurements.
I think I usually measure a bit lower than others around here and I measured some lights again to have a good(ish) reference.
I have a almost clear image of the die, but I feel it can be a tiny bit better focused.
I did not measure ampdraw, but I got best results using an old protected keeppower 18650. With better cells I got worse results. So it is indeed better to keep the amps down a bit.
D1s stock (5d) 115kcd
Souponfire thrower, fet dedomed xm-l2 205kcd
Cometa osram throw king 315kcd
That is a pretty good result Geuzz, close to the B158 with dedomed XP-G2 but with a smaller lens.
I will put one soon in my B158B.
Nice. I still have a b158 laying around, maybe I’ll order some more osrams depending on your results.
At least I have believe in your numbers not being to high also.
With dedomed XP-G2 now it is making 300 kcd
Did you give it hell with the DD driver??
From his post #19:
Thanks, i missed that. :+1:
Seems many of you is having problems overdriving this emitter with unregulated shite drivers. Bad stuff. Let me suggest you grabbing some of led4power's adjustable linear drivers or a more modest but fully current adjustable LD-25 (new version tested by HKJ), available at FastTech or Simon's store.
^:)
I’m a bit surprised that you are not mentioning the most obvious choice: the good old 8x7135 lineair driver (original 105C or Convoy’s biscotti version), add chips to taste. (just used one with 12 chips for my “White Flat” D80 build)
I still do not see the crusade that some people have on unregulated drivers, for many flashlights they work fabulously and are my first choice, and getting less light while the battery is drained is really not the end of the world (some people even appreciate that).
1 Thank