New 2nd Generation Cree XP-G2 LED!
- Thread starter jasonck08
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Well that was Jason that said that not me but I assumed he got the XP-G2 figures from the data sheet and the rest from the PCT.
ergotelis
Enlightened
Just got mine
tstartrekdude
Newly Enlightened
- Joined
- May 17, 2008
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- 107
Thanks for the pics ergotelis, I went ahead and rehosted your images on ingur for toughs who prefer it. http://imgur.com/a/DZOqx
ergotelis
Enlightened
All right guys this is the first test data from the 10 leds.
-This led is similar to the samsung 3535 chip in core, the silicone is a bit different.
You can see pictures from both leds. In that post, for those who don't know, you can see a xp-e,xp-g, xt-e, nichia 219, samsung 3535 warm&cool, a xm-l and finally two xp-g2 leds. I will post another picture,(when i find my ssc P7) with xr-e ez900,xr-e old core, xr-e ez1000 silver, mc-e, sst50 ,rebel , dedomed xm-ls, and some luxeon older.
-THe best to the worst in the 10 xp-g2 , the performance difference is only 5%, this is pretty good, @1,05amp with 7135 based driver.
-The worst xp-g2 to one of the best (from cutter) xp-g S2 2T led @1,05amp too is 10% better for the xp-g2.
-Xp-g2 seems to work just right with all xp-g reflectors. No problem. It focuses very well.
-I did my first two mods, a quark aa2 tactical and a fenix pd32. In the first flashlight,quark, it works just fine together, but can't tell accurate performance difference.
In PD32, i can tell you the performance leap, at least on my measurements:
1)Manufacturer rated: 315 OTF and 5000 lux
1) I rated : 323 OTF and 5175 lux (i have a prototype sample)
2)1st mod with xp-g S2 2T(from cutter): 352 OTF and 5800 lux
3)2nd mod with xp-g2 R5 1A(from cutter too): 382 OTF and 7300 lux(!)
For the record, i measured 1,2amp on the LED (NOT on tail!) on PD32.It has a copper base pcb.
I hear you!
-This led is similar to the samsung 3535 chip in core, the silicone is a bit different.
You can see pictures from both leds. In that post, for those who don't know, you can see a xp-e,xp-g, xt-e, nichia 219, samsung 3535 warm&cool, a xm-l and finally two xp-g2 leds. I will post another picture,(when i find my ssc P7) with xr-e ez900,xr-e old core, xr-e ez1000 silver, mc-e, sst50 ,rebel , dedomed xm-ls, and some luxeon older.
-THe best to the worst in the 10 xp-g2 , the performance difference is only 5%, this is pretty good, @1,05amp with 7135 based driver.
-The worst xp-g2 to one of the best (from cutter) xp-g S2 2T led @1,05amp too is 10% better for the xp-g2.
-Xp-g2 seems to work just right with all xp-g reflectors. No problem. It focuses very well.
-I did my first two mods, a quark aa2 tactical and a fenix pd32. In the first flashlight,quark, it works just fine together, but can't tell accurate performance difference.
In PD32, i can tell you the performance leap, at least on my measurements:
1)Manufacturer rated: 315 OTF and 5000 lux
1) I rated : 323 OTF and 5175 lux (i have a prototype sample)
2)1st mod with xp-g S2 2T(from cutter): 352 OTF and 5800 lux
3)2nd mod with xp-g2 R5 1A(from cutter too): 382 OTF and 7300 lux(!)
For the record, i measured 1,2amp on the LED (NOT on tail!) on PD32.It has a copper base pcb.
I hear you!
jasonck08
Flashlight Enthusiast
The XP-G2 figures were taken from the datasheet. The other figures @ 85C for XM-L and XP-G emitters were taken from the Cree PCT tool.
With the new LED ratings @ 85C, it is important to compare the XM-L and XP-G to the XP-G2 at equal die temperatures, which is why I decided to list out the specs of the emitters at those temperatures.
Wow so that suggests an increase in throw for the XP-G2 over the XP-G?
Other people in this thread were adamant that I was incorrect that a smaller viewing angle would yield better throw...???
Last edited:
ergotelis
Enlightened
@jasonck08,
Well i didn't read all the theory about the theory, put everything into practice immediately!
And in both two mods i made, the throw increased more than expected.
Well i didn't read all the theory about the theory, put everything into practice immediately!
And in both two mods i made, the throw increased more than expected.
A man after my own heart.:thumbsup:Well i didn't read all the theory about the theory, put everything into practice immediately!
You can't draw that conclusion based on tests with one type of reflector. I still maintain that a shallow reflector will favour the gen 1 XP-G for throw.
ergotelis
Enlightened
Here are some tests in reflectors: In fenix PD32, Armytek Predator, quark mini123, quark 2AA tactical, ray X60, uniquefire uf v4, i get better throw results than xp-g R5, though not sure if the increase is due to higher lumen, but the hotspot seems tighter too. In Fenix PD32 i saw that the increase in throw was considerably higher than the increase in lumen. In an hour i will know also for quark mini123 (is Ti version with xp-g S3 led) and armytek predator.
Interesting results . Thanks for doing these tests. I think the s3 bin gen1 is equivalent to the r5 gen2 in terms of lumen output (but are impossible to find). I'm thinking of modding a jetbeam rrt2 with the xp-g2 but will probably wait until neutral tints are available. The rrt2 is one of the easiest lights to mod.
ergotelis
Enlightened
I just dedomed one xp-g2 with success.It works! Do you know that i am crazy?
I will measure it soon and post the results, as well as other issues, such as possible tint shift and improvement in throw.
I also swapped some led boards, so as to use the appropriate pcb for the flashlights i am going to mod.
I will measure it soon and post the results, as well as other issues, such as possible tint shift and improvement in throw.
I also swapped some led boards, so as to use the appropriate pcb for the flashlights i am going to mod.
ergotelis
Enlightened
Dedomed cree xp-g2:
Noticeable tint shift to yellow, original is 1A.
Performance loss is about 10%, i think it is quite good.
Throw improvement still not tested.
Noticeable tint shift to yellow, original is 1A.
Performance loss is about 10%, i think it is quite good.
Throw improvement still not tested.
ergotelis
Enlightened
I am pretty sure this number is correct. I can say that it might be even more, it is about 7300-7400.
And here we are, just check some more numbers, that i didn't manage to upload them yesterday:
Fenix PD32 R5: was 323 lumen and 5175 lux, now 382 lumen and 7300 lux!
Armytek PRedator R5: was 345 lumen and ~17,000 lux, now 411 lumen and 27.150 lux!
Quark mini123 ti S3: was 293 lumen and ~3450 lux, now 310 lumen and 4470 lux!
All readings are @~30sec after activation, i have put a lot of effort to measure them accurately, but still, to be sure for all expect a +-3% difference.
Wow.
That has just knocked off the "Nichia Predator" from the top of my Non-Existent Predator Model wishlist.
Thanks for these numbers, this is great info.
ergotelis
Enlightened
I would have done this mod too( i have some nichia 219 from Craig) but xp-g2 came...
bshanahan14rulz
Flashlight Enthusiast
Ok, time for people to guess why and how Cree did it this time. Go!
tstartrekdude
Newly Enlightened
- Joined
- May 17, 2008
- Messages
- 107
Why? Because lighting nerds such as myself have short attention spans and will stop throwing money at Cree if they don't give new toys on a regular basis.
How? Unicorn tears and panda sperm.
How? Unicorn tears and panda sperm.
