If you get 4 DBS V3 aspherics, it would be 1000 lumens and have a hotspot that is only twice in diameter than the original one. It doesn't take much to reach 2200 lumens, just another 4 more DBS aspherics, but only increase of what 33% in diameter? (someone do the math pls)
Also, aspherics are a bit different from reflector setups. As you can see, the hotspot is even a wee wee bit bigger than the Solarforce MPP-1, but lux figure is twice as much.
In fact on a reflected ceiling bounce, the Solarforce MPP-1 registers 22.1 lux. The DBS aspheric registers a paltry 15.9 lux. Actually the DBS aspheric is like ~ 160 lumens OTF only. Thing is, nobody is going to do ceiling bounce or light up a big room with this. This is for outdoors use only.
Short arcs can be in the 2000 lumens range, but do 12 million cd and throw for several miles.
You can see the corona lighting up some parts beside the Crelant 7G5 hotspot. Also there is the spill light, but of course for such comparisons it does nothing.
Shoot. I think that this thread has convinced me that I need one. I have yet to get a good aspheric thrower so I may as well pull the trigger (ohhh my college student bank account :()
The Fenix TK70 is 3 XM-L’s right? The XM-L emitter has a surface brightness that is less than a XR-E. So having 3 XM-L’s doesn’t make the emitter surface any brighter.
Those 3 XM-L’s don’t hit the same spot. They make the spot larger. Throw is about lux and not lumens. The XM-L’s put out a larger wall of light but in any one spot the XR-E is brighter.
Take any of your XR-E lights that are driven at around 1A and take any of your XM-L lights that are driven close to 3A and shine them at a wall.
You will see that the center of the hotspot of the XR-E light is brighter than the center of the XM-L beam. The XM-L puts out more light (lumens) but the brightest part of the XR-E beam is brighter.
The brightest part of the beam controls throw because that’s all that’s left at that point.
For 1 single mode in max output (ie "tactical usage") and be able to use 2 cells (2 x 18350/16340/18650) it would be 1SM. Pls confirm with Alan of Dereelight.
The extension is EXT650, that makes it able to use 2 x 18650. It is usd12 additional, and is hard anodized.
With a 3SM multi voltage pill....and using a 4.08V TF Flames, i got 7.8 lux reflected.
With 2 x 18350, i got 9.7 lux reflected. So with a single 18650 it is still pretty bright.
You'd not want the 1.2A pill, the last one i got was about 60k. Also due to bigger die. This is 90k. That's not a minor/invisible difference.
The single cell pill, after stabilising for heat, would slowly lower in output in just minutes albeit very slowly. You need to ask yourself whether you want to pay 80 bucks for this kind of performance? Makes no sense. I already made that mistake, luckily the new smaller die came along (not expensive also) so that mistake can be written off.
Just get the BIO IMRs, they are usable for many other stuff. Safe too, they are no Li Co. On this light you still get like 80 minutes of run time. Seriously i don't see why people wanna get 2 x 18650, this is not a XM-L flashlight like the Sunwayman T40CS in which the tail draw is 1.5A.
Is lux like lumens? For example, do you need four times the lux for the spot to appear twice as bright to the eyes?
Oh, I didn't realize that IMRs used a safe chemistry! That's fantastic! I'd be comfortable experimenting with some multi-cell lights using these batteries.
If I got some, I would probably go with AW IMRs from lighthound, since I've heard that website provides fantastic service.
However, there is a note stating that IMRs have a lower internal resistance, and thus, if left to charge in a standard charger, may surpass the regular 4.2 Volts. I don't own a multimeter to test batteries...do you think this would be a major issue/safety concern? I guess that I will eventually need to invest in a quality multimeter...but not yet.
Not too big an issue with overcharging with IMRs. I mean i have overcharged many cells to like 4.24V and nothing happens, most chargers out there stop at that point more or less. Of course do not do that often as it's somewhat bad for the cell lifetime.
It is when you approach 4.30V then you need to start to be really concerned. What charger are you using?
You need slightly more than 4X the lux for it to double the throw distance.
Why not get protected 16340s then, if you are afraid. One of the cells go flat at 0.8 amps and the protection circuit cuts in immediately, no danger of reverse charging. Pill fails, also cut in immediately. IMRs are a good idea, but protected works better. These have reasonable capacity, nearly 700mAh in a capacity test.
Of course, with this charger, I wouldn't be able to charge either the IMR 18350s or Protected 16430s. I'm not quite sure if I understand what you're saying. Do you mean to say that protected 16430s are entirely safe? Or just that they are as safe as protected 18650s with a LiCo chemistry?
However, when I said that I could experiment with multi-cell lights after being exposed to IMRs, I meant that I could try out some multi-18650 lights that I've had my eyes on for a while, y'know? I mean, 90000 lux is incredible, but it's not as practical as, say, 60000 lux with a reasonable amount of spill for less money.
Actually the DBS aspheric is like ~ 160 lumens OTF only. Thing is, nobody is going to do ceiling bounce or light up a big room with this. This is for outdoors use only.