Lux III to K2 TFFC

[KingCanada]

Simple question, can I replace a Lux III emitter with a K2 TFFC and still use the same optic that is meant for the Lux III? The optic is the large TIR looking optic that is used in the Advanced Auto Parts 2c 3W, which is basically the same light as the Lowes Taskforce 2c 3W. If there is a difference in the mounting height, it doesn't matter as it will be used in a Mag 2c.

Basically I just want to know if the K2 is compatible with the Lux III optic.

 

[KingCanada]

So, if I would have said CREE or Quark, this thread would be bursting at the seams. Thanks for the help CPF :scowl:

 

[Black Rose]

If it was posted in the LED section instead of LED Flashlight section, you'd get more hits I think.

 

[KingCanada]

If it was posted in the LED section instead of LED Flashlight section, you'd get more hits I think.

Seeing as this is the most visited section of the site, I figured someone would know. I see the so called "Gurus" posting in here all the time. Good to see there's a helpful bunch on this site.

 

[McAllan]

Sorry I can't answer for LuxIII vs. K2.
But you should be able to change it to a SSC P4 without too many problems as they're practically identical. OK. There's a very small difference in chip height but the more light will make up for this. Or you can grind a little of the edge of the TIR optics to get it to rest on the LED a little lower to make up for difference.

Onething though. The SSC P4 has its cooling path connected to + where as the Lux III to my memory is electrically isolated. So you need a thin heat conducting wafer like those for power transistors (cut it to right size) if it is of significance that the heat path is connected to + (yeah connected to - would have been much better in flash light usage). Remember though that anodizing on aluminium is electrically isolating so if heat wink is anodized then no trouble with isolating.

 

[Armed_Forces]

Seeing as this is the most visited section of the site, I figured someone would know. I see the so called "Gurus" posting in here all the time. Good to see there's a helpful bunch on this site.

The Gurus get highly annoyed by nOObs that disrespect CPF by INTENTIONALLY posting in the wrong forum.
This was all covered during Lumen Summit '09.
The consensus was that they are taking notes and implementing selective responses based on the worth of the poster.
Seeing as how you've decided to add that witty/snarky tidbit on the end only further cements your position in this hierarchy.
Better luck next time.


Respectfully,
A_F Guru Emeritus

 

[Cuso]

The Gurus get highly annoyed by nOObs that disrespect CPF by INTENTIONALLY posting in the wrong forum.
This was all covered during Lumen Summit '09.
The consensus was that they are taking notes and implementing selective responses based on the worth of the poster.
Seeing as how you've decided to add that witty/snarky tidbit on the end only further cements your position in this hierarchy.
Better luck next time.


Respectfully,
A_F Guru Emeritus

Agreed. I was about to leave some comments about the K2 TFFC usage, but after reading the less-than-smart comments I better not... I will point to him to use our SEARCH functions though, welcome to CPF.

 

[KingCanada]

The Gurus get highly annoyed by nOObs that disrespect CPF by INTENTIONALLY posting in the wrong forum.
This was all covered during Lumen Summit '09.
The consensus was that they are taking notes and implementing selective responses based on the worth of the poster.
Seeing as how you've decided to add that witty/snarky tidbit on the end only further cements your position in this hierarchy.
Better luck next time.


Respectfully,
A_F Guru Emeritus

Just because I recently signed up, does not make me a noob. I put off signing up because of the so called Hierarchy that is present around here. There should be no reason that any one poster has more worth than any other. That is complete nonsense. I intentionally put this in the wrong forum because I figured I would get more responses here, doesn't sound like a trollish thing to do to me, which I'm sure you were implying. No disrespect intended by placing it here either. And since my question essentially relates to LED Flashlights, I could choose to put it here, or in the LED section, which is actually in the Beyond Flashlights area. My question is not beyond flashlights.

Agreed. I was about to leave some comments about the K2 TFFC usage, but after reading the less-than-smart comments I better not... I will point to him to use our SEARCH functions though, welcome to CPF.

No need to welcome me, I'm no stranger to this forum. And I DO know how to use the search function, thanks for the suggestion anyways.



If a Mod could please close this thread, I would appreciate it, as I don't want this bit of nonsense to escalate.

Thank You,

DG

 

[KingCanada]

Sorry I can't answer for LuxIII vs. K2.
But you should be able to change it to a SSC P4 without too many problems as they're practically identical. OK. There's a very small difference in chip height but the more light will make up for this. Or you can grind a little of the edge of the TIR optics to get it to rest on the LED a little lower to make up for difference.

Onething though. The SSC P4 has its cooling path connected to + where as the Lux III to my memory is electrically isolated. So you need a thin heat conducting wafer like those for power transistors (cut it to right size) if it is of significance that the heat path is connected to + (yeah connected to - would have been much better in flash light usage). Remember though that anodizing on aluminium is electrically isolating so if heat wink is anodized then no trouble with isolating.

Thank You for the response. I considered the SSC P4, but I am intrigued by the thermal properties of the K2 TFFC.

What my plan is, is to replace the Lux III on my 4 cell MagLed module with a Neutral White K2 TFFC.

The Module is in a 2C Mag running off an 18650, and I removed the reflector and glued the bezel of my AAP 2c upside down in the head of the 2c Mag, and screwed in the optic retaining ring, and set in the 35-ish mm optic so it compresses down onto the led and the retaining ring with the bezel screwed into place, essentially holding the optic in place. It works really well, and results in a beautiful beam. I would just like to have a neutral white K2 TFFC in there for the color and increase in brightness. But since I don't know if the optic will work with both LEDs, I'm not going to order the K2 yet.

 

[DM51]

If it was posted in the LED section instead of LED Flashlight section, you'd get more hits I think.

... nOObs that disrespect CPF by INTENTIONALLY posting in the wrong forum

I was about to leave some comments about the K2 TFFC usage, but after reading the less-than-smart comments I better not... I will point to him to use our SEARCH functions though, welcome to CPF.

The above 3 extracts of posts by Black Rose, Armed_Forces and Cuso neatly sum up the irritation and annoyance you have caused here with your inconsiderate behavior.

Just because I recently signed up, does not make me a noob.

Perhaps not, but you are certainly behaving like the sort of noob who thinks he knows it all and actually knows very little.

I put off signing up because of the so called Hierarchy that is present around here. There should be no reason that any one poster has more worth than any other. That is complete nonsense.

It is not nonsense. You've just proved that, with your worthless post.

I intentionally put this in the wrong forum because I figured I would get more responses here, doesn't sound like a trollish thing to do to me, which I'm sure you were implying. No disrespect intended by placing it here either. And since my question essentially relates to LED Flashlights, I could choose to put it here, or in the LED section, which is actually in the Beyond Flashlights area. My question is not beyond flashlights.

Wrong on every single count. It is not up to you to disregard where a post properly belongs. If you intentionally misplace a post again, I will suspend your account here.

No need to welcome me, I'm no stranger to this forum.

Really? You are certainly a stranger to the Rules. It will be in your own interest to read them very carefully, if you wish to remain here.

And I DO know how to use the search function

So use it, and stop wasting everyone's time.

If a Mod could please close this thread, I would appreciate it

No. I'm leaving it open, and moving it to LED, where it belongs. The posts up to and including this one will stand as a reminder of your trollish behavior, which will receive appropriate moderator action if it is repeated.

Back on topic from now on, please…

 

[KingCanada]

DM51,

To be totally honest, I in no way intended to be trollish nor disrupt the forum. And I'm sorry if I came across as being such. Frustrated? Yes. Trollish? Definitely not, and with no intent to disrupt or look for a reaction from anyone.

I now know that I have to post in the proper section. I just assumed that since my question was essentially about a flashlight, and not beyond flashlights, which is where the LED section is, the LED flashlights section would be fine.

Lesson learned, and no hard feelings from my direction. Although, I would not have expected a moderator to address me like you did.

DG

 

[yellow]

For all the time I read in cpf, that is the 1st time I remember DM51 not be overly nice to a poster, dont u think that must have a reason? Probably asking for it quite several times?


back on topic,
I dont like K2s, nor do I like any Lux product since the Cree revolution,
but they are the best option, as the dome is the same size as Lux 3,
also the height of dome to die is pretty the same,
while the other recommended led, the P4 in special, features a larger dome and therefore might not let the original optic fit completely.
If You want one, and can get one in the tint preferred, use it.

is that mounted on a star? Then no problem at all.
You can also try several different led with no difficulties.
If no star, take care for slug electrical state (neutral, positive, negative)

 

[tebore]

If I remember correctly that light uses a Lux mounted on a star.

I wouldn't bother with the SSC P4 it's brightness is on par with the best K2s but they are significantly less robust than a K2, worse thermal path. The emission pattern of a K2 is 99% that of a LuxIII barring die height differences. The hotspot will be slightly less focused or more focused depending on the optic.

I would go for it. Any difference in beam pattern will be made up by the 2x increase in brightness.

 

[HarryN]

Just agreeing with Tebore - the K2 is a perfect replacement, and is built like a tank.

I have used products from Lumileds, Cree, SS, LEDEngin, Bridgelux and Osram (and several generations of them). If you can't take products from any of these companies and make a decent light, then you really aren' trying that hard. Each offering is "different", but very viable.

In the end, I think designers tend to limit things down to only 1 - 2 brands / models, simply because it is expensive and time consuming to optimize the beam for each LED and application. I am pretty much down to only a few LEDs, not because they are perfect, but because I can use past experience to come up with a solution easier.

 

[KingCanada]

Thanks for the help. I will be ordering shortly! The reason I want the K2 is because of how robust it is. Since I'm working with a MagLed module, we all know the heat sinking is lacking to say the least.

I have experience with the offerings of CREE, From P2 XRC to R2 XRE and XPE and everything in between, and an XPG R5. Also various bins of SSC P4 and P7, multitudes of Lux I, Lux III and Rebels, but I never had a light that used a K2. So far, besides the lack of brightness, the Lux III's have been my favorite, followed by the Rebels. The beam quality and color is far and away better than offerings by CREE and SSC in my opinion. That's also why I want the K2

Now I know to never assume which section would be the best. Put it where it belongs, and get proper answers!

Thanks my fellow CPFers for the help!

DG

 

[KingCanada]

Another question,

Can the K2 be mounted exactly the same way as the Lux III? Is the bottom isolated?

 

[tebore]

The K2 like the Lux3 base isn't exactly neutral(the explanation is another topic), but for your application you don't need to worry about isolating them.

MagLED module? This is different than your first post. If you are working on the MagLED keep in mind you'll need to extend the K2's legs by soldering on some wires or bits. You'll see what I mean when you get to it. This is assuming it's the old LuxIII module.

 

[DM51]

Now I know to never assume which section would be the best. Put it where it belongs, and get proper answers!

Thanks fellow my CPFers for the help!

DG

Thanks for your posts - I'm glad you understand! :twothumbs

 

[KingCanada]

The K2 like the Lux3 base isn't exactly neutral(the explanation is another topic), but for your application you don't need to worry about isolating them.

MagLED module? This is different than your first post. If you are working on the MagLED keep in mind you'll need to extend the K2's legs by soldering on some wires or bits. You'll see what I mean when you get to it. This is assuming it's the old LuxIII module.

Yes, I already have a plan for the K2's legs. I'm either going to reuse the Lux III's legs, or make some out of copper wire. In my original post I just stated that it will be used in a Mag 2c, I should have been more clear on that front.

 

[KingCanada]

Thanks for your posts - I'm glad you understand! :twothumbs

Thank you for being patient and leading me in the right direction. I realized that I am familiar with this forum as a guest, not as a member. That shall soon change though :thumbsup: