Now THIS is big: Keygos? 7 x XML and 3 x 26650 IMR

It will be more like 1 amp per led

someone be the pig on this one and review it. It looks great. :)

Benckie -

All you have to do is go to the website and scan down to the "Features" section and you'll see:

  • This TRUSTFIRE torch uses of a 7x CREE XM-L T6 LED, producing very bright beam of light.

The caps on TrustFire is for emphasis. I wonder if someone at Keygos goofed - or if they are trying to gain some credibility by including the TrusFire name???

Pulled the trigger / took one for the team.

Hope it's worth it. ;)

Thanks....do try it with 3 x 18650 as well as 2x18650. Do you have a lux meter? I hope that it's > 3000L OTF, then i'll get one.

I cant wait for you to post pics on it already. It looks tempting, but never heard of the brand. still a noob at these things..

I think you can use the Kaidomain 7 LED driver. $20 i think. Some German forum already modded the J12 with the 5 LED version.

But if you cant use the torch for long periods of time, then is there much use to it? Just for showing off? :D

I have little faith in eBay and I can not see the trustfire 7 x XML in any trusted online stores, so... I'll wait.

At best, this thing is a gimmick. I am very familiar with what it takes to generate that kind of light properly. I have built several very high power flashlights (like over 15,000 lumens OTF) using Bridgelux arrays. At 80-100 watts of power this thing will be frying bacon in no time.

For passive cooling Bridgelux recommends at least 10 square inches of heat sink fins for every watt dissipated... you think this thing has 6+ square feet of surface area? The only way to get rid of that kind of heat is using a fan. See Thermal Management of Bridgelux LED Arrays for a good overview of LED heat management

Not sure why anybody would think this is driven @ 3A per LED. This is most likely a TR-J12 with 2 extra LEDs. You'll get a few more lumens and a little less throw than the TR-J12. I'd get one if I didn't have the J12 already.

i am glad more people are chiming in (indirectly, dissuading me from buying one) :)

+1

+2

well, i don't have trj12, i'm just broke

I don't have the J12 either. Hmm.. Good excuse for buying this!

Yes. I have a lux meter and will test this also with different cell configurations.

Maybe I should write a bad review of this? Could save us all much money? ;)

no write a good one, maybe i'll forget about the king

If it doesn't melt in your hand, I'm getting one.

Don't even try. You'll end up buying both of them. For sure.

you are right, but in the meantime it will be easier on me if I pretend otherwise lol

--

it won't melt in your hand but if it gets wet, it might melt your hand

http://www.youtube.com/watch?v=j7GJcKuVGm8

Well, we know that the TK70 and DRY work fine with triple XM-Ls. They are run at 3 and 4 amps respectively.

At those levels, you do hit some diminishing returns. So if you had more XM-Ls at 2 amps, you would get more lumens, with about the same amount of power.

7 XM-Ls at 2 amps each = 14 amps. The DRY with 3 XM-Ls at 4 amps = 12 amps.

As stated, there is no way they are running at 3 amps each, and 8500 lumens is just a stupid stupid joke that makes them look like idiots.

But it is certainly possible that this light could work pretty well and have 50% more output than the DRY simply by virtue of having more XM-Ls, driven at a higher efficiency amperage.