For some reason, the luminous area values in that chart seem to be way off for at least some of the emitters.
SFT70 = 6.25 mm²
XHP35HI = 5.8 mm²
SFS80 = 5.2 mm²
Interestingly, the lm/mm² values seem mostly in line with values in my tables. Two wrongs make a right?
Thanks! This is great.
From the image, these ones are discontinued or will be soon:
The chart also has some 11mm * 11mm LEDs, like the SBT90.2 but more floody:
We need to find a cell that can handle 62A for the SFH55
3x21700 should do it!
Probably should just use a car battery
LOL.
Im really torn on buying this new FT03 (mateminco version) with the SFN55.2
Can anyone who has a light with one of these LED's share any information? is it interesting / WOWing / fun? I have all three LED variations of the FT03 (one with SFT40 not sst40), any reason i should even be considering the SFN55.2 version?
If so, better to run a Molicel P42a or one of the QB26800 batteries i have laying around? I would need to buy another battery tube though, thats another $10.. thats $60 for an FT03 that does (7000?) lumens. Is that compelling? I don't know.
Well, if the NI03 is any indication of performance to the ft03, I say get it. You won’t be sorry. I don’t think the heat sinking is as good though on the ft03 so your duty cycle on higher modes will be lower. Use the 26800. I really like that cell and it’s probably diminishing returns to use a P42A.
That’d do it!
Other option is LiPo cells, which can often discharge at 100C. With a 5Ah cell that’s 500A!
LiPo has some major cons over LiIon but I don’t see why there aren’t hotrods that use them.
My NI03 Valkyrie with SFN55.2 has arrived in the US.
Tempted by the ft03, but they didn’t offer 26800, and I love nightwatch fins/knurling.
As long as their aren’t weird colors to the beam, I think I’ll like it a lot. I don’t have an SBT90.2 to compare to…
You will like it. Good beam also. 100 times better than xhp50/70.2 and throws great.
Pretty excited. Wish it would show up before this weekends trip.
I hope to use it boating. I have tried so many lights for the range inside an aspheric thrower. We will see. I will try to get pictures, probably October though.
Kaidomains Custom P35 SFS80 4000K version can’t take the 8 amps that they tell it should. I fried one, reflowed the second one with more care and it also fried at 8A.
Bummer. Maybe you got a bad bin or something. Warm white emitters can’t take the same current as CW ones anyway.
Received my nightwatch valkyrie. Great flashlight. The sfn55.2 has a great beam shape in this (op reflector) light. I’m impressed. I would definitely prefer 5000k, but I’m impressed by the emitter. I might buy the same light with sbt90 just to compare, I do think I’d prefer the beam shape of the sfn55.2 based on beamshots from the web and using this light. The spill is very bright, sort of reminds me of a TIR.
Astrolux have just listed a light with the SFS80 LED:
Astrolux® A03 SFS80 LED 800LM Powerful 14500/AA
I ordered a P35 3v 4000k emitter and a P70 6v 6500k emitter today from Kaidoman with my other leds. Looking forward to both! they both look domeless, hoping the P35 competes with the sft40 but in 4000k!
Thinking of ordering one w/SFN55.2. I'll ask Neal for his best deal, and if it's in stock.
Do you still like/recommend it?
Definitely. It’s one of the more well-rounded lights in my collection. It’s only missing a buck+FET to make it spectacular. I mean a sub 60 mm reflector that throws over 700 m with a huge 7070 LED and 7000 lumens? Oh yah. Nothing else with a single LED and battery comes close. Plus PD charging and power bank sweetens the deal.
Just ordered the Astrolux ft03 mini with sfs80 claimed 1650lm & 720m throw! Sounds like a brighter CULPM1 to me!
My green OSRAM version of the FT03 mini does 910 meters, though at 900 lumens. Does the 720m compare well with a Boost HX? The Boost HX is still expensive as well.