I made a 3.15A S8 but S2+ internals with 1mm2 led and got 30800 cd with Smooth reflector and AR coated lens.
Nice job!
I have been wondering about this… how hard is it to get the CSLNM1.TG on an XP sized board? I know there are issues with excess solder from what I have read…
enough flux is the key so the solder sticks together where it should adhesive forces do the rest
Is it just me, or is it a difficult thing to judge the white flats vs. the black flat? Seems like in theory the white flats should have better throw, but in practical mods, every head to head I've seen the black flat prevails. This thread mostly compares the white flat to the good dedomed XP-G2 but I don't see apples to apples comparison in a real host to the black flat.
I understand the difficulties with the black flat with electrical isolation, but still, in a decent thrower host, has anyone proven the white is better than the black? Is it dependent on the host or maybe spending the time/effort on focusing a white flat for a particular reflector? Why would the white flat be more difficult to focus?
I’m going to try putting the white flat into another flashlight with one of my 120mm lenses so I’ll let you know how much improvement I get over the optofire once it’s done.
focus should be the same cant be that, maybe those LEDs are a tiny bit different in height but this should be so minimal not making a big difference
the main problem is getting this ultra low Vf LED driven at a current below 4.5A, DD driver cant do it even with Medium drain pulls too much
enderman measured at acceptable current about 300cd/mm² and 600 with collar, but this of course to the fact he uses a regulated supply
same measurement numbers on other testers
…and so we should use a regulated driver for these Osrams.
But it seems many have been DD brainwashed…
Not sure why, but the old tricks of simply adding resistance by using thin, long LED wires and higher resistance batteries should do the trick. The springs you have to be careful with because even 5 amps on cheap wires may be a problem. I'd choose to use the high quality Blue springs for example, and would rather up the resistance on the wires. Of course it would be better to have a great regulated driver but that's not so easy or cheap as a FET based driver.
It's like those cheap SRK's that have the squiggle line traces all over the big driver -- they are only doing that to add resistance - bypassing the traces is an easy power boost.
Example in a 12X SRK clone (added jumper to circumvent the squiggles):
Got it, regulated, MOVING ON before we alert Barkuti
And then you eliminate all the benefits of low Vf LEDs.
You’ll only have full output on a freshly charged cell.
Agree, not the best solution but it works, just like any other FET based driver we have in all the popular lights as of late (Emisar, Fireflies, Sofirn. etc.). On all of them you get the max on full cells, then slowly drops - sorry, but it's our only/best solution for a reasonable cost.
I believe led4power’s driver uses a FET in its linear region. The driver must be constantly sensing how much current is passing, and adjusting the FET accordingly.
I am far from an electronics expert though.
I guess…
The LD25 driver is FET CC though, and not expensive.
Will need some extra cooling above 3 Amperes, but can be boosted with slapping on R030 (for 4 Amperes) or R020 (for 4.5 Amperes) on top of the R010.
But with high Vf LEDs on a single cell you might as well use a DD driver.
But with low Vf LEDs on a CC driver you can also optimize the electrical path (spring bypasses and thick LED wires) and have full regulated output for a long time of the battery charge.
With the White Flat 1mm² you can keep the max current on 4 or 4.5 Amperes (diminishing effect when going above that) and keep the Vf rather low in order to be able to have full output for even longer.
Nor am i, but you’re right. 
Adding 4x 7135 to just about any driver you can salvage from a junk pile?
i saw some reports (djozz), that 7135 amc are killing this led, is this true or is it even possible in some way? Maybe somebody can explain, cause I am really interested about this.
False info. I have 2 lights with AMC drivers with this led and no problem.
I have a 7135x12 in a Jaxman Z1. It doesn’t get a ton of use but it has always worked fine.
I believe you are referring to this comment but even djozz says he doesn’t know why his 7135 died (note the 7135 died too, NOT the LED)
edit:
Note that it was also a 2mm2 white flat with a FET+1 driver so quite a bit different scenario
The thing is with specific regulated/linear drivers, they are fixed size. Right now I can do about any size in a FET+1, from 15 mm all the way up to SRK size, and lots in between combined with filing down, etc., plus I can configure them for power or e-switch lights.
Sort of related, looking for a decent host for these LED's, I do have a couple Cometa's and one B158. I did find FT has the B158 in stock at $29 with the BLF code, but I'd prefer a B158B and it seems no longer available at GB. I only have one B158, wish I got the B158B's when they were there. Now, Brinyte is under new ownership or something, or sold the B158 line - looks like they gave up on the B158. I messages with a rep a few weeks ago - the Brinyte that is now is not the old Brinyte, so not looking good for the B158's - what a shame... I think/believe the B158 is still bout the best throw for it's size around.
Of course there are many other lights/hosts that would do.
Oops, here for $26: https://www.aliexpress.com/item/Brinyte-B158, and here w/red for $25: https://www.aliexpress.com/item/Brinyte-B158.
Worth to mention that B158 beats all commercial available 50mm aspherical flashlights when it comes to throw… All that with super cheap 2$ acrylic lenses.
When I was telling that to certain Copyfire factory they just ignored me… They stick to their production and lenses vendors and that’s it.
Also worth to mention that B158 lens will give less die projection than other 50mm aspherical lights.
How much you can expect with White Flat? Mine cheap Uni-t Light meter says 420kcd! Yes with FET DD setup( I am obviously brainwashed hehe )