Tried the Samsung 40T in my FT02 got 17.2 amps at tail with clamp meter. Wish I knew what the lumens are. It must be way up there.
Best guess, 17.2A on the 3V should be comparable to 8.6A on the 6V, and according to Djozz’s and Texas Ace’s 6V test that equates to around 4700/4800 lumens, and they tested warmer tints.
So, a lot 
How long before it’s too hot to hold?
I am excited about this most definitely. I will be doing a Quad Xhp50 set-up in my Astrolux S41. Hopefully I can reach 10k lumens
Those are raw emitters that were tested. In a light you have losses from the reflector, lens and driver. Also, those tests were before djozz and TA calibrated their spheres with Maukka’s lights. So maybe closer to 3,800 to 4,000 lumen? Just a guess.
Do you mean quad xhp50.2?
The xhp35 still needs 12v.
How do you plan to power the XHP35 in the S41? It runs at 12V and the S41 is a single cell light. So you would need a boost driver but I do not know of any boost driver powerful enough for that.
I thought about that as well but I the XHP50.2 will not fit the S41 optics.
I wonder if dedoming or slicing the dome would make it fit?
Plus I guess you need a mcpcb that fits as well.
Possible but the opening is so small I would guess even slicing the dome would not work properly with the stock optics.
The mcpcb is the real issue, it would have to be something really custom far as I know.
my apologies. Yes, XHP-50
I’m not certain it fits but should be close:
This same mod w/ these LEDs would probably be good.
I thought the xpl and xhp50 had the same footprint. I must have been mistaken.
Yes, they have the same footprint but different voltages. The XP-L is a 3v LED but the XHP35 is a 12v LED.
The xpl, xp-g2, Nichia 219 footprint is 3.5mm x 3.5mm. It’s a single die 3v.
The xhp35 footprint is also 3.5mm x 3.5mm, but it’s a quad die wired in series for 12v.
The xhp50.2 footprint is 5mm x 5mm. It’s a quad die wired 3v or 6v/12v.
The xm-l, xm-l2, and sst-40 are also 5mm x 5mm and single die 3v. You need this XM sized footprint to mount a 50.2 on.
I thought that 3V XHP50 is something like a unicorn, something rare that you’d not find anywhere. I got Xanes 1287 zoomie that has XHP50, but one of the segments is dark. So I decided to replace it with XHP70.2 that I had laying around. On the MCPCB in the 1287 is written “6V”. I put there new MCPCB with XHP70.2 and… nothing happened. I’ve checked it with multimeter and it was 3V, not 6V. So I’ve checked the removed MCPCB with 3V and it lit. Xanes 1287 uses 3V version of XHP50 in that cheap zoomie. It was quite a surprise…
There is no 3v xhp50. Only this new xhp50.2. Xanes is not using a Cree xhp50. They are using some cheap 4 die emitter.
Xanes lies about their lights and their batteries.
PS, there are also imitation xhp70 on the market as well.
I put one of these in the new Convoy S11 host. It has a Mtn FET driver and a 5,500mah Shockli. Quite bright.
Does anyone know if there is a 32mm triple or quad board for these?
Triple tpad for c8f, yeah. Cutter has it in the 3v emitter listing or all by itself: MCPCB-XML_XHP5032_TPAD - Cutter Electronics
Fits the light (21700 variant at least) pretty well. kawiboy modded one in this thread a few pages back.
Only quad I’ve seen is the q8 board that l4p has. led4power 38mm though
I have one in here too with the q8.
Ah beautiful…thank you! I think that one from Cutter is just what I need.