BLF style 18650 1s thrower( poor mans Olight M2X)

Around 260-330kcd but it all depends on which xpg2

XP-G2 S4 2B

Can’t wait until I receive all the parts :weary:

Actually my longest thrower is the Nitecore P30 with around 100.000cd

And then it also depends which XP-G2 S4 2B :slight_smile: Really I am not kidding you here. New is super bad and you should avoid and put XM-L2 or XP-L or if you have good old one than you are good to go in breaking candela records :wink:

Is there a way to know if it’s one of the new or the old ones? I bought it from mtn

Probably new, the old ones are sold out everywhere.

You can recognise the old ones by the die.
They have relatively smooth phosphor and the grid of dots are visible.
The new ones have more rough phosphor and you can hardly see the dots.

Hello, could you tell me what variant of xp-g2 is? I can not get better photography, I have one placed in UF1504, with driver BLF A6 runs at 4.7 amps with fresh cells, greetings!

Sorry to place large size so it can be viewed!

I’ll try this night with the xpg2 that I just dedomed, if I don’t like the results I’ll take the XP-L way

Looks like a new one, i can’t see the grid of dots

BY THE WAY:
I got a FAKE XM-L2 in this light. :frowning:

I got 240.000cd with dedomed xpg2, on maxtoch 26mm mcpcb and fet driver. Cell wasn’t fully charged, I’m going to try again in a while

gaston, you might want to consider putting a percentage in your photo selection, that pic is blown off even my 24” monitor…

Yes please resize mentioned pic and that is is new s42b

Edit: Or any new G2… I should not tell that it is new s42b but it surely looks like that.

Edit :beer: If I perform continuity test with multimeter, led lights up and you can see many small points, as these are concerned to differentiate old xp-g2 s4 b2 from new ones? regards

We should not spam the thread so you got plenty of info on that here

Thank you luminarium iaculator, I am reading, sorry for the deviation, I have host on the way analyzing which led to use, xp-g2, xpl hi v3 3c or xml-2 u4 1a, greetings and thanks again.

Please report further results! I am also hooked badly on this reflector light although I still much prefer aspheric lights.

Unfortunately, the orders take at least 2 months here, will have to wait quite …….

Has somebody measured the (inside) diameter of the reflector openings?

With those I could calculate some throw figures.

Ok, I now know the the diameter of the large opening, 52mm. The unused portion at the bottom seems to be around 15mm.
So the size of the reflector is 1948mm^2 as seen from the hotspot.

Under perfect conditions with good Osram Black Flat at 4.5A (250cd/mm^2) and a UCLp lens when turning the light on 425kcd should be possible (5-10% less after heating up). Of course this requires a linear oder Buck Driver (2S) and a lot of time and money.

With de-domed XP-G2 S4 2B (old, good one) at 4-5A (around 180cd/mm^2), FET-driver, normal glass lens and heated up maybe around 276kcd.

Interesting…
I never liked to many calculations and frankly speaking I really hate math. But I also know that plenty of engineers and scientist are on this forum so I really feel like a redneck among this guys :slight_smile:

But it would be interesting to know such calculations. BTW you talk about de domed xpg2s42b, and I am not sure that any of us have proper equipment for measuring cd/mm 2 so I just wondering how reliable that measured 180cd/mm 2 is?

Anyway I am still waiting 26mm mcpcb and I will report about old XP-G2 S4 2B performance although I did tested them and it seems that 4.4A(or lower) is max with curent batch of 9 pcs I have and with fet driver.

I expect at least 280-300. But as I said I will report when my pcb’s and new lux meter arrives.

Djozz tests are always Holy Bible to me. But I guess in his test of mentioned emitter he probably did not got the best one. So I am very intrigued now. Cause this is obviously new thrower king… Tiny (dd XP-E2 size) but obviously working.

So another question is what kind of current draw we can expect if we use a FET driver with it? Djozz did direct drive mode but what is the difference if I use artic alumina as insulator and fet driver?
I really don’t understand… That why I will ask you guys :slight_smile: