who is buying me a XP-E2 Torch led? Update: DBCstm did, test is in post#81

[djozz]

@cajampa

Aha! yes now that i read your text again, i see that i had drawn the wrong conclusion thanks Ok, so the Supfire F3 with the XP-G2 Torch in it gives 104 klux@1meter & 290 lumens zoomed out, right? Interesting that means it is 39% loss from the bare led measurement. What is klux? is this the same as the often reported kcd? :~

I made a topic of the light loss in this zoomie: http://www.budgetlightforum.com/node/38424

Yes, I personally have never dug into 'kcd' but it is the same number so I never bothered . I always use klux@1meter because that is how I measure it: I measure the klux@5meter and calculate back what it is at 1meter (times 25). klux@1meter is a sort of standard way to represent throw.

[_the]

@djozz

Yes, I personally have never dug into 'kcd' but it is the same number so I never bothered . I always use klux@1meter because that is how I measure it: I measure the klux@5meter and calculate back what it is at 1meter (times 25). klux@1meter is a sort of standard way to represent throw.

Please use kcd. See https://budgetlightforum.com/t/-/3879

Thanks! :)

[djozz]

@_the_

@djozz

Yes, I personally have never dug into 'kcd' but it is the same number so I never bothered . I always use klux@1meter because that is how I measure it: I measure the klux@5meter and calculate back what it is at 1meter (times 25). klux@1meter is a sort of standard way to represent throw.

Please use kcd. See https://budgetlightforum.com/t/-/3879

Thanks! :)

Thanks for the link, I read it with interest. :-)

I will be good, and use kcd from now on. But I still think that using klux@1m, although not the proper unit, is more clear for the reader because it gives a direct clou of how it is measured.

[_the]

@djozz

I will be good, and use kcd from now on. But I still think that using klux@1m, although not the proper unit, is more clear for the reader because it gives a direct clou of how it is measured.

Thanks. I'm sometimes using "xxx klux@10m = yyy kcd" for clarity.

[texaspyro]

@*the*

I’m sometimes using “xxx klux@10m = yyy kcd” for clarity.&nbsp

I guess that would make you a member of the Klux Klan? J)

[DB_Custom (Dale)]

I’m on a mission, just built my 7th Eagle Eye X6 light, another Quad. The “weakest” in my line-up, this one has 4 of these XP-E2 Torch emitters under a Khatod optic that claims 10º. With a 17DD Hybrid S driver and TK’s A6 firmware it’s pulling 8.24A from a Samsung 26F for 1749.15 Lumens.

It’s got a pretty nice hot spot for a quad, but it doesn’t look like what you’d expect from 20º (I think the 10º figure is a half-angle, always deceptive that)

About to try a hotter cell and see what’s shaking with these tiny emitters. I’m assuming they can handle it….

Edit: Oops! Make this my 8th, forgot about building the single XM-L2 U3 1A that does 1811 lumens. Planning 10 X6 lights that are all different. I have 3 Quads, but each is a different set-up with much different results.

Edit II: OOOPS! Seems like the little XP-E2 Torch and myself are not made for each other. North of 12A one died. A second was injured and limping (dome separation).
So I did what I had to do, I put 4 XP-L V5 1A de-domed under the neat looking Khatod optics.

[n10sivern]

Damn, that kills my plan Dale. I wanted to do a triple E2 torch with a 17DD. Oh well. Parts are already ordered so will just have to see.

[DB_Custom (Dale)]

Keep that bit of resistance and you should be fine, or just don’t use the top cells.

[n10sivern]

I’m disappointed that you were disappointed with it. I had a glimmer of hope it might make a decent light

[DB_Custom (Dale)]

All in all I think they’re ok but can’t take high current. And well, I uh, kinda, uh, maybe run em a little too hard? :bigsmile:

[n10sivern]

Haha, I don’t doubt it Dale

[RMM]

Stick 6A-8A worth of 7135s in there and call it a day! I know that the little XP-E2 torches can handle 3A, but after 2A or so you're not gaining very much.

[MRsDNF]

I just built a light using this led running at 800 mAh flat knacker without it raising a sweat. Thanks Dale.

[DB_Custom (Dale)]

These would be ideal with a driver like the PZL, use the 7135 chips and control output values within that 2.5A-3A range per emitter.

The Quad was working nicely at 8A, the Samsung Lavender 26F that I recently got 8 of (protected, too long, stripped the protection and now they’re useful cells) ran it just fine. But I just HAD to stick the HE-2 in there…

[MRsDNF]

And, drum roll?

[RMM]

@MRsDNF

And, drum roll?

Fried them DD. (see above post).

[DB_Custom (Dale)]

Well, I didn’t fry em outright, just melted the dome loose off 3 with one being killed when the dome moved. The other 2 died when removing the domes. That’s 8 that I’ve killed.

[n10sivern]

Haha Dale. You just had to. I understand

[DB_Custom (Dale)]

Ok, so I used up most of the XP-E2 Torch emitters I had left over. I think I have 3 left. The rest went into this……

[n10sivern]

Wow! Surprised you didn’t dedome them all or half of them. How much juice you giving them?