I get 11.76A at the tail with my Uni-T clamp meter, but only 3032 lumens out the front.
Edit: Remove the lens and it does 3236 lumens… the lens is costing 200 lumens straight up.
Edit II: Oh, and the amp reading is of course no tail cap, the lumens readings are light assembled with a large Omten switch on the PCB. (replaced the thicker stout looking factory switch)
Remember my post about the Times New Roman you love so much? 
With a different lens and a 20ga spring bypass on the Blue spring, 3291 lumens at 12.97A draw.
The host’s are unbranded so I’m not seeing the relevance, assume they put the text there?
(also going to assume the actual font style would have nothing to do with that. )
I have both the 18650 C8F and the 21700 C8F and have just tried various batteries.
I use a lux meter app on my phone and get 460 lux on the 21700 C8F using a Liitokala 4550Mah 21700 and also using a 30Q with the adapter. I then used a Samsung 30T 21700 battery and got 560 lux. On the 18650 C8F I get 510 lux using a 30Q.
So the 18650 C8F does outperform the 21700 unless I use Samsung 30T’s.
How many of you meet less lumen issue? Sorry for that. We are working on it.
My 21700 C8F +sofirn 2700 4000 mah got a bit less bright than 18650 C8F +sofirn 18650 3000 mah from ceiling bounce test.
My 21700 sofirn c8f got only 7.22A used UT210E clamp meter and got 2,678 lumen. I use fully charge sofirn 21700 4000mah battery that come with the lights.
What is the price on the 21700 C8F? Are they still for sale?
This would be my first 21700 light and have always thought that the 21700 would fit the C8 better anyways.
I think you can get it for around the same price at Amazon with their coupon.
Also, know TA he may want to order 2x hosts for the same price from their aliexpress shop
Looks like my reputation proceeds me lol.
Finally have my 21700 C8 host working with the rubber boot installed. I had made a shim to be sure the boot wasn’t holding the button down, didn’t work. So today I used my Proxxon rotary and carefully reduced the length of the brass post coming up out of the switch. Put the boot in (shim still in place) no worky. VERY obvious space between the post and boot, but no good. Without the boot it works fine. So, I looked around on my table and found the black plastic tray some FET’s came in. What they call the “tape”. I cut the bottom out of one of the containers and placed this inside the boot, removed the shim, put the light together… and it works! The rubber is soft enough that the switch depression rebounds and Anduril doesn’t recognize the press. So now with this thin bit of plastic in there it gives a positive enough click that Anduril sees it and the light works fine. Go figure…
This only happens with Anduril?
So far as I know, Anduril seems to have a higher sensitivity to the button press timing…
I think 6-emitters would be the grail C8. I think LED4Power is coming out with a kit for the Sofirn 21700 C8F. Hopefully Kiriba-ru will make a copper spacer for this as good heat sinking is critical if we want to max the output.
Eh, your talking about TIR optics, though. There’s already a lot of lights out there that use multiple TIR lenses. The really nice thing about the C8F is that it uses a reflector. Now if we could get a 4 or 5 emitter version with a reflector, now that would be really cool.
Someone made a 7x reflector C8. But the head is huge. Don’t think we can fit more than 3 reflectors in a practical C8 form factor. Why is TIR bad? I think you only lose 5-7 % output compared with reflector.
I MUCH prefer TIR optics over reflectors as a rule. You might loose a few OTF lumens but you gain a much more usable beam.
I did countless tests between TIR and reflectors a few years ago and almost every time I decided I preferred the TIR.
In today’s world of LED’s with rampant tint shift issues, the TIR is even more important for me. A beaded surface TIR can eliminate almost all tint shift with minimal effect on OTF lumens or even the beam shape.
That 6x C8F looks quite interesting, I would be down for 1 of those.
Skylumen Vinh said he loves TIR too. I’m guessing the real drawback is you can’t make a TIR light throw as well as with reflectors.