Damn, that kills my plan Dale. I wanted to do a triple E2 torch with a 17DD. Oh well. Parts are already ordered so will just have to see.
Keep that bit of resistance and you should be fine, or just don’t use the top cells.
I’m disappointed that you were disappointed with it. I had a glimmer of hope it might make a decent light
All in all I think they’re ok but can’t take high current. And well, I uh, kinda, uh, maybe run em a little too hard? :bigsmile:
Haha, I don’t doubt it Dale
Stick 6A-8A worth of 7135s in there and call it a day! I know that the little XP-E2 torches can handle 3A, but after 2A or so you're not gaining very much.
I just built a light using this led running at 800 mAh flat knacker without it raising a sweat. 
Thanks Dale.
These would be ideal with a driver like the PZL, use the 7135 chips and control output values within that 2.5A-3A range per emitter.
The Quad was working nicely at 8A, the Samsung Lavender 26F that I recently got 8 of (protected, too long, stripped the protection and now they’re useful cells) ran it just fine. But I just HAD to stick the HE-2 in there…
And, drum roll?
Fried them DD. 
(see above post).
Well, I didn’t fry em outright, just melted the dome loose off 3 with one being killed when the dome moved. The other 2 died when removing the domes. That’s 8 that I’ve killed.
Haha Dale. You just had to. I understand
Ok, so I used up most of the XP-E2 Torch emitters I had left over. I think I have 3 left. The rest went into this……
Wow! Surprised you didn’t dedome them all or half of them. How much juice you giving them?
It’s the stock boost driver, it was (after some modifications tweaking restrictions) making 3600 lumens with 12 XM-L emitters. Now it’s making 2974 with Samsung 26F’s. (I had LG HE-2’s in it with the XM-L’s)
There are 6 cells, 3 stacks of 2. The emitters are wired in series x 6, in 2 groups, with 2 channels on the driver. So I left the driver alone, upgraded the wires big time, spring bypass in the tail, and added brass rods in the teflon driver cover for ground to the battery tube.
They had 26 ga leads from the driver hooking up the positives on 3 emitters, and negatives on the other 3. (group 1) Then 32 ga wire jumping them for series.
I put 22 ga silicone leads from the driver, 20 ga teflon jumpers. The driver contact board is a familiar one, I’ve repaired lights that have had flat tops short out on it. This light they used a brass cup in a teflon or white nylon retaining ring that then let the ground rely on threads. So I put 2 brass 3/16” rods through the nylon/teflon material to contact the ground ring on the driver and the battery tube sits on these.
The light is from banggood, TrustFire 12X Cree XM-L T6
Notice they claim 15,000 lumens! lol, it made 3200 when I got it out of the box. Actually it didn’t work when I took it out of the box, the driver is on a threaded plate which wasn’t screwed down snug, no ground contact.
Edit: Forgot, I also drilled and tapped the plate the driver sits on so I could screw the driver down. Nice and snug now. My Courui was set up much like this, very similar board, and gained 2+A by screwing the driver down.
We need some DBCStm Showoff BeamShots®
A dozen well centered emitters! 
So, is this a throwy showerhead light? Yes, beamshots! :-)
No Joke!!! That’s a lot of work into that light Dale. Good job, but it’s all useless without beamshots! 
I though you had planned to do a multi with XHP70 and optics in that light Dale?
1811 lumens from a XM-L2 U3 1A 
thats way more than i have ever hear someone reporting. Is it old stock or new?
The highest i have seen someone report on a U3 before i think was around 1500 & 5A thereabouts. For 1811 you would have to have more than 7A i would think, and i thought the U3 burnt out way before that :~
Please some more details, if this mean the good old XM-L2 is back at the high lumens game that would be very good news 
Tom E recently got an T6 4C i think it was really high also, in Nitro’s triple spacer order thread