XM-L T5

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old4570
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XM-L T5

I got me a XM-L T5 from cutter , and since it was a T5 I put it into my Ultrafire A20 ...

Well , all I have to say is holly cow !!!!!     

Its gone from 250L to over 600L ,  The beam shape / composition is almost exactly the same as the SSC P7 , so dont expect a spectacular thrower ...

My HS802 has a MC-E in it right now , when I get some T6's , I will do a transplant , [ HS-802 is a tight pencil thrower with XR-E emitters ] 

BAck to the A20 , I left the original driver in place and just swapped in the emitter [ XML T5 ] , I havent measured current as yet , but I will do beamshots etc when it gets dark .

 

Here we go : 

High / 1.77A / 620L

Med / .69 / 250L

Low / .25 / 100L 

Beams after dark .... 

Here you have a nice clean view of the XM-L T5 in the A20 

And here is a picture of my A20 [ 1 x RCR123A ] 

 

 

http://www.makeagif.com/91KWYL    Link to animated gif of beams ...   http://www.makeagif.com/xrvpJ2     Slower version !  

 

http://www.yourfilelink.com/get.php?fid=595720    Full sized images to download if anyone wants them [ Win.RAR ] 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

Edited by: old4570 on 12/20/2010 - 15:44
brted
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It's a lot of light! The group buy at CPF is finally gearing up and I'm wondering what I should ask for. Since I already have a drop-in, I'm thinking of just getting 1 T6 mounted to a 14mm board to build my own P60.

That's a huge jump in output. Maybe it is direct drive on High? Sounds like basically you've got a Quark MiNiX now.

old4570
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Its a pocket rocket now , and gives my P60 [ 18650 ] SSC P7's a serious run for there money .... 

T-6's have not arrived at Cutters as yet , they did have the T5 , so thats what I got ... 

But looks like XM-L might be the go , though I dont know how well they will throw , yeah , those important beamshots ...  [ tonight ] 

I will compare to my SSC P7's ...

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

cabfrank
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and it sounds more and more like the xm-l's are going to make a lot of other emitters second class. thank you to all of you for sharing your preliminary results.

old4570
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OK , all my SSC P7 [ single 18650 ] are around 500L  

The little A20 on a RCR123A blows them all away ...

EVEN the SST-50 [ mine did 500 ]  is rubbish compared to the XML ........      Howzat !!!  

I cant wait to get my hands on the T6 's and build some P60 drop ins [ RIP = SSc P7 / MC-E / SST-50 ] 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

cabfrank
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though, for all out there that are far more expert than i am at this, will it be viable in a small, say 14500 or single 16340 host?

brted
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old4570 wrote:

The little A20 on a RCR123A blows them all away ...

Did you get a chance to measure a tailcap current yet?

old4570
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Updating original post as I go ....

Yes , Im sure you can use the XM-L with a 14500 or 16340 light [ I did ] . 

Just cherry pick the driver you want to use , since I dont care about shortening the life of a RCR123A [ I have plenty of them ] , and I also usually dont run high , except to show off , and as can be seen , on low , its 100L .  Damn , a 4 mode driver or ramping driver would be real nice [ for less than 100 Lumen output ]  

Butt , 0.25A and 100L   = I used to think 0.25A was OK for low , not anymore . 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

fran82
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@old4570

Is this possible?

High / 1.77A / 620L

Med / .69 / 250L

Low / .25 / 100L

620 lumens with only 1,7Amps?

250 lumens with only 0,69Amps

100 lumens with only 0,25Amps?

Enjoy BLF

Budgeteer
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Seems a bit overrated since there were reports of 600-700 lumens at 2,7A

kragmutt wrote:

They're gonna send you a green redcat with a black LED.

jekostas
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fran82 wrote:

@old4570

Is this possible?

High / 1.77A / 620L

Med / .69 / 250L

Low / .25 / 100L

620 lumens with only 1,7Amps?

250 lumens with only 0,69Amps

100 lumens with only 0,25Amps?

 

Cree's documentation on the XM-L is 260 lumens at .7 amps for the T5 bin.  658 min flux at 1.77A to the emitter by those numbers.

fran82
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ummmmm If this is possible I will transplant many of my lights to xml

Enjoy BLF

Budgeteer
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If it does true 600LM at 1,8 its a real winner!

kragmutt wrote:

They're gonna send you a green redcat with a black LED.

fran82
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yep the forever substitute of the P7´s

Enjoy BLF

Budgeteer
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And with better tint!

kragmutt wrote:

They're gonna send you a green redcat with a black LED.

old4570
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The current measurement is as measured :  I cant measure current and light output at the same time [ Id need 3 hands ] 

So it may not be entirely right , current may be slightly higher in use [ less MM ] 

Unfortunately the A20 unscrews in the middle ...  This is only as a guide , sorry , I dont expect it to be 100%  , but just to give you an idea ... 

Its getting dark now , Ive charged up some 18650's for my SSC P7's , so lets check out the beams ...  

But yeah , a bad light for matching current to output , I should have some XM-L T6's in a day or two , so I will build some drop ins for my L2 Hosts 

Then I can measure current and output at the same time ...

Beams shortly 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

rzezniq
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620 LM form 1*16430 light.... The world just went bananas.....

 

 

Very nice mod!

old4570
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http://www.makeagif.com/91KWYL 

Try this , beams as gif .... 

Its cloudy , so way to much city lights [ reflected from clouds ] , so very bad conditions for beams , but hopefully you get an idea ...

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

brted
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That's a neat way of doing beam shots, but can you slow down the frame rate a bit? I don't have quite enough time to look at the picture *and* read the caption. Maybe 2 seconds per frame?

fran82
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can post them right here one by one?

Enjoy BLF

xP.1337
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is cutter selling them with 14mm boards yet? cant find their board size on their website

uncajesse
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Nice GIF, I'm glad I got the larger reflector of the C8, even though several of those XM-L lights have literally the exact same beam shot images on KD. :/ The A20 is not quite big enough even for a flooder, but DANG can it flood. Big Smile Awesome.

old4570
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Cutter has 14mm boards ...

Posted a link [ first post ] for full sized pictures if anyone wants them ...  Will try for a slower gif 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

old4570
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http://www.makeagif.com/xrvpJ2

 

Here it is slower 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

old4570
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Actually the little light is so bright [ spill is brighter ] it makes it look like it has more flood .. [ I guess it has brighter flood ] 

+ the flood is so bright , it makes the center look darker [ optical illusion ]  , I guess the camera cant see what the human eye can ...

Thats why I posted a link for the larger images if anyone wants them ..

Unfortunately I dont have a digital SLR with timed exposure , so the pictures do LIE a little ...

But the little XM-L T5 is hot stuff ..    Just cant wait for the T6's and hopefully drive them much harder ..  

I might buy another T5 , the tint is just perfect for me [ and see how hard it can go in a P60 host ]

XML rules !   

But just to say , to the naked eye , it was just awesome , so much light from a EDC , its a sight to behold ...

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

Kokopelli
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I have a A20B on the mail. I were planning to use it as is but I can transplant its R2 to a thrower and an XM-L or XR-G into A20B. How does it mod? It requires 14mm emitters at most I belive, am I right?

I don't have a 14mm XM-L right now but a 12.8mm R5 is also on the mail. I wonder which one would be most efficient at something like 1.2A current to LED.

old4570
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14mm would probably be the go ..

XM-L is the most efficient , then Xp-G ...

 

First thing to watch for = Is the emitter glued down ?  Might make it hard to remove without destroying it ...

Then you need to glue the XM-L in place [ thermal epoxy ] 

Do you need a new driver ???   or do you wish to use the original ..

Soldering ?  

Checking for shorts [ XP-G / XM-L design lends itself to shorting , especially with reflectors that press down ] 

Moding is a learning experience , be prepared to break stuff ... 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

Kokopelli
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I'll better reserve XP-G leds to 2xAA lights as boost should work better with a lower Vf. I guess any 18650 light can unleash the potential of an XM-L. I plan to start with something with more space, like an UltraFire C8 or a bigger TR-1200 body. Ordered my insulators, thermal epoxy, 2.8 linear and 3A buck drivers, empty P60 drop-ins, Dremel tools and so on... Smile

Don
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I did see somewhere on CPF that an XP-G R5 was brighter than an (unstated bin, probably T5) XM-L until you went past 1500mA. But my memory may be at fault. The XM-L is more efficient at any given current, but not necessarily brighter. It is when the XM-L becomes much less efficient that it gets really bright. The same is true for most LEDs

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

brted
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Don wrote:

I did see somewhere on CPF that an XP-G R5 was brighter than an (unstated bin, probably T5) XM-L until you went past 1500mA. But my memory may be at fault. The XM-L is more efficient at any given current, but not necessarily brighter. It is when the XM-L becomes much less efficient that it gets really bright. The same is true for most LEDs

I don't think that's true about the output. Cree determines the bins at 350mA. So a higher bin will always be more efficient and put out more total lumens at pretty much any current than a lower bin. Now the brightness of the LED die itself (and therefore the throw) may not increase for the XM-L until you get past what the XP-G is rated for which is 1500mA. That's more of a lumens/mm2 thing though.

sixty545
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brted wrote:

I don't think that's true about the output. Cree determines the bins at 350mA.

That is not quite true. XM-L's are binned @ 700mA

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