spill angle and lumens are basically only affected by the lenght to opening ratio of the reflector
so with given head there wont be any change in that proportion
Correct me if i am wrong! But with a different curve in the reflector you will get a different beam shape or not?
I think thats what they want to test.
By tha way i updated the internal structure of the head. The stepped design is not happening. Because of the small space between reflector and head they would have to make many small stepps. It seems it is easier to fabricate this form. But we got the bigger mass un the inside + deeper finns and one more. Not a lot but without changing the appearance this is the best we could do.
I hope you like it. And the Tailcap gets a new end. What do you think about it?
I dropped a 3V XHP50.2 in my D80, with a Sofirn FET driver that I had laying around.
The FET might not be the best one, only pulls 9A from a 30Q but it does produce some photons !
The beam is nice, fat hotspot, well defined and some usable spill.
Pictures later
^ tease
That sounds really good.
If everything goes like planned i will get beam pics from the reflector test next week.
And they will make some short video clips from the machining process when they start with production.
Can not wait to see how the D80 emerge from a piece of aluminium.
Okay I confess I didn’t do any beamshot or pic at all… sorry
Though I did some measurements : 2030 lumens and 20kCd
I need your help guys.
I was asked which CCT we would like to see. They want to offer 2 CCTs. The LED will be a XP-L Hi. Let me know which CCT you prefer in a new D80.
4000k and 5000k.
I would like to see 5D/5A 4000k.
I would go away from Cree to Samsung LED LH351D
I like the LH351D a lot. But for a thrower like the D80 the XP-L-Hi seems the better option.
And correct me if i am wrong but could it be a problem running only one LH351D on a FET driver with big good springs. . . ?
It is a comercial sold light. So a burned out led would be a problem.
The D80 is more of a general purpose light than it is a thrower, even with the HI it’s not really a thrower. The LH351D should handle any cell that the light can accept, even with bypasses on the springs.
I like the beam profile an XM-L2 gives in the D80 reflector so that will likely be my choice, if I find I have another SBT-70 I may well use it here… 
The LH351D is one tough LED.
Not as tough as the XP-L2, but better than the XP-L HI.
I wasn’t around for the original BLF-D80 development, but over the years it has been mentioned and recommended quite a few times in other unrelated threads. Now that this updated version is in the works, I definitely need at least one.
Like many others, I prefer 4000K-5000K Hi CRI.
I talked to LuckySun and they looked into the LH351D. Untill now they did not find a source (that can deliver the needed quantitys / within a reasonble price).
And they are still waiting for the new batch of reflectors. The first batch they tested did not deliver the desired beam.
But they are testing out the driver. For now i have not heard anything bad about it. And i did not expect problems from this side (maybe that they think it is to expensive in comparsion to the drivers they used to use). But with a strong comunity behind it, they can see the advantages of it.
Mine now rocks an SST40 and a BLF FET driver.
8A and 2170 lumens.
It would be a good upgrade of the original design IMO.
The beam is really neat, the hotspot is the same as with the original XM-L2, but with double the lumens !
^ what he said
This is not a thrower anyway, so why bother with XP-L HI or other small die LED ?
Go fat or go home !
(an XHP50.2 3V would get a 3000+ lumens but then it will be a true hotrod, not really reliable IMO)
It may not be a “thrower” but it is definitely more of a throwy edc than a floody edc, which is a very nice option in a world of triples and quads. I think the SST-40 setup sounds great, since the xhp is too hot.