Hi Tom, just to confirm, the ‘pill’ overlaps with the body by about 2mm? Does the sides of the pill contact the body as well or is just resting on the shelf? Thanks for the preview 
EDIT: freeme, I had initial ideas of using this light as a host for an MTG or XHP70 LED or even a tripple XHP50 but the shelf design has me hesitant. As a single XML XPL thrower, even DD, it seems sufficient though.
Well, I'd call it a plate, shelf, or pill top, not pill. Where the shelf overlaps the body, the shelf is 2.0 mm thick, but the overlap is about 4-6 mm I'm guessing - it's assembled right now. Not sure if maybe CWK mentioned that dimension earlier? Maybe not.
Post #111, first pic, shows the lip the LED shelf rests on - looks pretty wide in the pic. One could easily drill/tap holes there for setting screws, for example, or could just coat with thin layer of thermal grease.
Hahahaha 
you made me laugh, will have to put this into my sig 
exactly, you dont need lungs to mod a flashlight
Hope you get well soon!
Almost 300kcd with a domed XM-L2 and uncoated glass? 
And yeah this light doesn’t need modes, with 4 26650 that’s 20Ah of capacity, enough to run 4 hours straight at turbo! If one needs lower modes while carrying this monster, just switch to a smaller flashlight.
Yes, I’m thinking thermal grease is the ‘only’ option for us peeps without tools. Whenever you can, if possible, can you check if a C8 reflector or better yet, three of them can fit in the head? IS a triple with C8 reflectors possible? Thanks
hmmm
Well, post #108 has all the dimensions you need - plenty of depth, for width you'd have to figure whether an 89.7 mm diam reflector has the space for 3 C8's. You'll have a lot of vertical space to plug up. If it does, it's close. A Shocker is effectively 3 C8's reflectors, and all focused to boot.
Spring bypass's: added 22 AWG bypass's on all 5, including the center. Actually the center one is pretty cool for running on one 26650 cell only.
Now I got 5.0A on one cell in the center (measured across he switch), and 5.36A with all 4 cells @4.17v. Throw is now measured @5m for 308 kcd, again an XM-L2 U4 1C with dome.
Tried hot dedoming a XP-G2 -- no luck 
. Got one in the gas for 1.5 hrs so far - will take a while.
Thank you guys.
After bypassing the Diodes & using the CaroNite cells only; now is 10% brighter than TK61, throw also 10% higher.
Yes, the reflector has high potential.
(Note: Due to limited type of gaskets I have, the XP-L gasket is protruded out from the reflector base, this limits the light to the reflector base yet it throws about the same as TK61.)
Some figures:
~2m distance:
TK61 read at 40000 lux
BOSS 1 read at 44000 lux
~5m distance:
TK61 read at 6500 lux (uneven density where the centre is far higher)
BOSS 1 read at 7100 lux (visually the hot spot is more even than TK61)
ceiling bounds:
TK61 read at 115 lux (at start, then drop to 107 lux)
BOSS 1 read at 126 lux (at start, then drop to 119 lux after 15 sec.)
try acetone, I found it work faster than gas
BTW, would 4,35 cells make a difference?
How quickly does the body of the light get warm or hot?
Well, you mean it supposed to get hot? 
Haven't felt a tingling of warmth yet, but haven't run it much. After 30 secs, nothing... I'll do a longer test to see.
Do you think it would blow the emitter if left on high? No - believe if the LED is seeing 5.35A, it should live fine, not sure 100% - djozz's tests/threads may say, but I believe over 5.5A is the danger zone for the new XM-L2's (U3, U4).
If the flashlight body gets warm as fast as similar size lights then maybe the heat path from the "pill" to the body is fine. Well, don't have any lights this size to compare with. This is a big light in terms of dimensions and weight. My max modded Shockers that did 6A would get hot in the critical area of the pill, but that's a smaller light and had a lot more amps and heat.
Just did a bit of math
First some assumptions, body shelf inner diameter = 70mm, 5mm overlap so emitter shelf = 80mm
80mm circle = 5026 square mm, 70mm = 3848mm, contact area is 5026 - 3848 = 1178 square mm
A 38.74mm dia circle is 1178.2square mm.
What that means is the heat path is the same as a 38mm dia light, and I have an xm-l2 t6 at 6A using less transfer area than that :bigsmile:
Cheers David
Ok, tried this:
Results: somewhat disappointing
4.2A tail reading, 547 kcd
This is a XP-G2 S2 2B de-domed, from an old batch at FastTech. Counting on the twisting of the XP-G2 to self-center in the XML size centering piece. Beam pattern didn't look too bad. As shown above, the centering piece was sanded on the top from 2.09 mm down to 1.76 mm. Didn't fiddle with any focusing, the hot spot looks pretty good, but there is some surrounding artifacts, but it looked well centered.
I didn't expect much with the 4.2A reading - not sure why it's so low. Was expecting over 5A. The tint looks good, the dedome seemed to go perfect, just a little silicone left around one bond wire. I got a dedomed V6 1A to try - might give it a shot.
Still need more time, but here's some notes on it so far:
Well it's one-of-a-kind. Not sure, maybe the largest stock light reflector? Certainly under $100 there is no comparison I would think. There's a bunch or pros/cons. It's certainly moddable, which is great.
If I can't get high performance from an XP-G2, it will be a downer, but if I can get a nice wide beam (well not really wide) from a dedomed XM-L2 or XP-L, I'd be happy, and should hit 600-700 kcd without crazy focusing. I was hoping for like 800 kcd, and still think it's possible, and that someone can achieve it, if this group buy can/will happen.
If the group buy happens for $50 or so, it's a steal to get this kind of size/power. Mechanically, I'm maybe most concerned about the driver retaining ring - I think it can fall apart being so thin, frail. I think the shelf is not such a downer. The wire clearances are always a challenge with this type of reflector design (way too wide bottom). I don't think the driver is that bad as well - it doesn't seem to have bad loss's with mods, least what I seen with the XM-L2 -- it basically hit the max of 5.35A.
I'm thinking/hoping the 4.2A on the XP-G2 is not all the light - something goin on with the LED, but can't be sure at this point.
You could argue for the excessive size/weight, but it's a big reflector budget light with 4 26650 cells -- so what do you expect?
Seems to me it’s just a bit larger than my TrustFire TR-S700, which is a 3x26650 hand-held, so size-wise, not a problem for me.
This must be BLF, on the one hand it’s stated that it does 547Kcd, on the other hand “… if I can’t get it to perform…”.
That’s funny!
648Kcd is a mile. Just sayin.
Hey Tom, what are the reflector dimensions? (I’m hoping you say 95mm diameter, 65mm tall)
I am hoping that we can get a real good group buy price on these. I think this is a good candidate for those old monster lanterns. A DD driver with a couple modes would make this thing spot on. High for searching and low for "just need a light". Maybe even L-M-H. Best of all...run time.
I have a couple old Milwaukee 28V battery packs that look like they have the paper 26700's. I think they would be perfect for this thing. It is big and heavy but when you need super long run times why not....at least one ;)
I could be up to 10% low on my throw #'s because of 5m measured (happened with a modded TN31), and of course an AR lens difference on top of that could be another 10%, then you are in 1 mile territory. I might do little more testing to see if I can boost the 4.20A, then either dedome the U41C or try a dedomed V6 1A. I really need to test dedomed XP-G2's - maybe this one, try in another DD light, or work on my XP-G2 hot dedoming - I got a ton of obsolete ones for sure, but this time measure before/after Vf at set amps. I think my bench PS is good for that, not sure how accurate, but relative measurements should be fine.
The hot spot sure looks intense...
Post #108. CWK did a pretty good job reporting the dims early on - don't think I confirmed them all, but some dims I took are only fractions off from mine, so I trust his numbers.