One small problem with this theory.. Just touching a torch containing He-II would freeze your hand pretty quickly. If memory serves, Helium is only liquid at like 2K (2 Degrees C above absolute zero). There also isn't a flashlight manufacturer on the planet that could design seals and threads capable of keeping liquid helium from leaking out.
:)
Not to mention the heat would have nowhere to go :glasses:, darn it. Scientist need to hurry up and invent magic. (actually we do have it, but it is virtual :p )
I don't find it to be a fair comparisson 2100, if you continue that way, you could say, 10 X UF-2100 will give you the same for 100USD.
This is a single light, there is no way to compare to two sepparate lights in my opinion.
Haha...you are right. Someone did tell me to tape 3 x UF-2100s together to get a triple XM-L. The UF-2100 is $14.50 cheapest from what i come across though, i like that thing with 4.7kHz PWM!
But this really is a floodlight. The truth is this.... Something is preventing it to be so far below SR92's 45k cd, coz even by sheer power as a floodlight, it should be able to do above 45k cd. Heck I got nearly 30k cd from the 54mm diameter Sky Ray 3800, DDed of course.
I guess the spacing is a bit worse than typical budgetlights. Take the above mentioned TR-J12 for example, it's 44k cd for 9 XM-Ls. Area is 30cm^2 for TR-J12. Minusing off those area which are unused and it could be say 25cm^2? It's actually about 460 lumens for each XM-L, it's not a flashlight which has its emitter gunned like there is no tomorrow. Eg, DRY.
Feilong is 8cm, or 50cm^2. And it has a whole single reflector. But it is noticeably less throwy than 45k cd.
What I can think of is :
(1) Noticeably less lumens per emitter than even a TR-J12, low drive levels. Could be due to (a) driver unable to support those power, though they are "rated" - doesn't mean that they need to do that in reality (b) battery cannot supply such juice. But not likely as you need only 10 amps for each 32650. I have good experience with the 26650 and 32600, the 32600 happily does 4.5A and does not even get hot much and lose much capacity.
(1a) what I am afraid is that due to point 1, the lumens output is there also. That is logical.
(2) Heat is affecting the output even at lowered drive levels due to the emitters designed in a cluster.
I actually have the XTAR S1 which is effectively a 85mm head diameter light and 3P battery config, and i have examined the driver space. Not too much space there, but of course much better than the usual multi-XML lights that i have (quite a lot there). The TK70 is a 105mm class multi-XML light that accepts the same 32mm diameter cells, slightly better. The thing is that heat output of the lights affects them driver electronics. You can drive them hard of course, but they won't last past a few minutes. That said, the DRY 3 x XM-L is a different breed, it's a light for the lumen junkies, truly unlimited/unrestricted stuff.
I still can't find that CSM-360 by feilong tested by a Russian guy....they were saying there were some drive problems, just not driven hard enough and it's not that bright at all from the measurements.
Don't get me wrong, it's an interesting concept. The modders have done dual emitter versions on a single reflector, so it's not new. MC-E is a quad, the very little known CSM-360 is a quad as well. But 5/7/9 emitters is new and definitely "hauls ass". But perhaps it would be better if the neck is made bigger with more fins, and they use at least a 100mm reflector preferably 150mm, and make it as special edition.
Folks can get like 300k cd with 75mm with HIDs.
You may put the bezel face down, wrap legs and arms around the tube, have a friend punch it on high, and ride it to the moon! Light this candle, baby! Yeehah!
The CSM-360 with an aspheric will look like this:
I admit it, actually i wanted to get that feilong when i first got into the hobby!
The one I like most from that manufacturer is the flydragon, with an aspheric and also a regular reflector head, but it is far from a budget light I could assume to buy.
2100, I believe the problem of this huge thing is using a single reflector, surely one small reflector for each die would throw much better, but it would need a huge head..
De-focussing it a little bit to get all emitters on the same area should throw quite well, did anyone try it?
I really like aspherics, but even though it is impressive, I'm not fan of that beam profile.
defocusing would probably help a lot though
anyway, as for this 9xml - i can't figure out why they crammed the emitters together. if it is going to flood you might as well space them out in smaller reflectors like the current 3 and 5xmls.
That would also leave quite a cavern for adding more mass - although a 5 or 6 lb light is a little impractical (for most of my purposes anyway).
Yes Dthrckt, I agree with you 100%, but in the other hand it is good to see companies taking the risk of doing different models even if they are not that good :)
You want more pic - take a look at this forum (english translation link included):
agreed - I don't think it is that bad, actually. I mean, if you have the money to spend on lots of emitters, there's nothing wrong w/ underdriving xmls...
I don't care about the throw figures - if you wanted throw in a light this size you'd go HID, right?
let's hope they're reaching the point where they realize they'll have to begin to use some active cooling if they want to continue to push the envelope.
Yep, fei long in chinese is actually Fly Dragon directly translated. :)
I was hoping someone do some XR-Es in this bugger. Holy !@$!@#@ it'd be awesome. HIDs radiate quite a lot of heat via the front glass though. LEDs do not, it's via the back. LEDs hate heat, HIDs love heat. It is not until about 400W in a 7" portable host that do you need forced air cooling. Yeah, that is like WOW.
some provocative measurements :)
when a couple similar lights popped up on DX I thought it over :) I think it could work really well but it is low on my list of projects (but mostly just because so many other projects already have time and money invested).
Viffer, actually that particular MF 35W is a well known under-performer. :) Measured many times to be in the 50k cd region. Check out tatjamagic's comments in CPF section (and my dialoug with him).
But yes, the 20/24W HIDs are actually even more inefficient. You'd want to go high power with those flashlight host type of HIDs. But don't mix up with those 35W automotive ballasts, those are really different animals....esp after putting them into the big hosts. The Microfire 35W has OP, the SMO ebay/aliexpress 35W gets you slightly over 100k cd actually.
His XTAR S1 figures seem a little low, but anyway that really puts to rest my doubts and i hope the others too!
WOW!
Where do i sign up for it man? :D I mean the flashlight looks cool looking anyway.
Seems to be in the 5000 lumens OTF region.
Throw is a mix. The microfire 35W is measured by many members to be in the 50-55k cd range. Its getting quite high here, and the S1 + SR92 are quite low.
But anyway one thing i can't make sense of is that in the first photo it clearly shows the throw of the 2D80 9 XML to be lower than the SR92. (1) operator error in that first photo maybe?
Still some questions unanswered. Yeah provocative measurements....plus pictures. LOL!
Interesting! And provocative! Just occurred to me that it migth not be a good idea to measure even at 3 metres, which they seem to be doing due to the small spot size.
This would be more indicative of throw. Many metres away.
