wurkkos did it with the ts30s.
yea I'd be in too. Not for this price though unfortunately. Sft40 would be more interesting
Also interested in this configuration
I got a pretty big collection of Amutorch's, they have been excellent quality, unique style that some may like, or not like, but I found them mod friendly as well. Many models use a mildly rough finish titanium. I got a TC500 single 21700 cell, size is roughly the same as this one, Amutorch link here: Amutorch-tc500-2200-lumens-775-meters.
The TC500 has a slightly bigger head diameter at 64 mm (XT60 is 62 mm), but it's shorter at 142 mm (XT60 is 150 mm). I have a sliced stock SST-40 6500K in the TC500 running Anduril 2 and it does pretty well at 275 kcd, 1049 meters. I would assume a SFT-40 should do a little better. The tail switch on the TC500 is tactical so I enabled the feature in Anduril 2 (depress the tail switch and it's on the last used level).
6000 lumens is a stretch for a SBT90.2 for sure. Maybe the 1220 meter distance is possible, not sure. I'm sure they are using a high amp driver in this one.
I tested the stock TC500 and claimed 2200 lumens, measured 1920 (mauuka #'s at 30s), but throw was rated 775 meters but I measured 872 meters (190 kcd).
Tom E, thanks for your technical explanations, in your opinion what is the real value of this flashlight? Because I understand that $ 96 is too much. Thank you for your answer.
SFT-40 LED is in shortage currently. If it interested most users, we could offer SFT-40 version when LED is available.
The runtime is tested with Samsung 40T/4000mAh. Wrong battery mentioned in the link… It will be revised ASAP. :person_facepalming:
I think that SFT40 is more suitable for multiled flashlights, for example I would see it perfect as a replacement for the Osram W2 on Haikelite MT41 that I own and which is the only compact flashlight capable of rivaling in range and brightness with the various monoled flashlights equipped of SBT90.2, the latter LED certainly remains superior to the SFT40 in applications with a single LED because with the same head diameter it offers the same range but more than double the lumens. It is certainly more expensive to build a flashlight with this led but undoubtedly its performance is superior so I am not interested in an XT60 with SFT40 because the Convoy L21B already exists which reading the data sheet has a range of 1258 meters therefore practically the same as your XT60 however, it has less than half the lumens, 2000 against the 4800 of the XT60, then surely L21B has a better runtime because it heats much less and because it needs less current, however this is another matter.
I disagree. I think it is a great replacement as a 3volt version of the xhp35 HI.
this is exactly why I am more intersted in the sft40 in this XT60 (if it were running a 9 or even 10 amp CC driver of course):
more throw, less heat, much better battery life. Also, 4800 lumens doesn't mean much when it will drop to 2000 lumens because of heat and battery life drop over a mere couple of minutes (at most), because the sbt90.2 at 2000 lumens will have much less luminance than the sft40 at 2000 lumens.
please do offer the sft40 version when available. But only if you can source or develop a 8amp, 9amp or 10amp constant current driver. Convoy has a 8amp driver readily available that works very well for this LED.
so this is essentially Amutorch's FT03s.. the most important factor that will determine if the XT60 is better than the ft03s is how well the XT60 reflector is focused (this is IMO the biggest bottleneck of the ft03s and the only thing that kept it back from being a better option than the K1 sbt90).
if my experience from my 2 amutorchs tells me anything, is there is a hopeful chance they did the reflector right on the XT60 (my experience and what I've read from others is amutorch's reflectors throw well because they must be focused well).
if so, I would most likely buy the XT60, unfortunately I will have to wait to see other's feedback and some some tests on throw/candela, and I will miss the sale promotion price..
EDIT: I just realized there is a 7mm difference in head size, that does not make this and the ft03s direct competitors. I thought the head size was within 2mm, my bad. But if the XT60 does throw as well as claimed with this size head, that would be nice performance
Thanks for responding on this. Yes, seems in short supply now.
I posted some SFT-40 test results in djozz's SFT-40 review thread here: https://budgetlightforum.com/t/-/67043?page=1#comment-1785607.
I think the SFT-40 is a great choice for multiple or single LED lights, just hoping for lower temp version, i.e. 5000K or so. I got several SBT90.2 lights (11 or so), some stock and some modded, including the triple HK90, but the cost is getting prohibitive.
I have XT45 sbt90.2 and can say that one 21700 is not enought for this LED. 2 x 21700 is much better. Also has xt35 tactcal version. Also great light.
But among the compact flashlights, the best the Noctigon K1 with SBT90.2 has only one 21700 and yet the performance is naturally superb at the expense of duration but you just need to have a spare battery behind it.
There is one more thing to consider in my opinion - this is the size of the hotspot. I find SBT90 amazing even in lower currents, as it makes huge and throwy hotspot with bright spill, which makes it very useful for close to mid distances even in bigger reflectors. If I take the above example it should be hard for it to manage 2000 lumens on a long run, more likely 1000-1500 with 500-700m ANSI fat hotspot and bright spill, which I find quite usable.
https://budgetlightforum.com/t/-/60686
Hi, help me understand ... in the link there is the djozz test of the SBT90.2, you can see that at 6A of current it produces about 2500 lumens, to produce an identical result SFT40 has to work at 10A, at its maximum capacity while SBT90.2 works at 33% of its capacity, so with a lower consumption and heat production I suppose. Then I wanted to ask you another thing explain to me why 2000 lumens are different in two different torches, if something produces 2000 lumens regardless of how it got to that performance, 2000 lumens are always 2000 lumens as 10 kg are always 10 kg. Please help me to understand better why I do not contest your statements, only as a neophyte hungry for knowledge I would like an exhaustive explanation. Thank you.
Fedtro - kcd (throw) scales the same as lumens as far as amps is concerned, so at 6 amps - yes looks like 2400 theoretical lumens is possible, but compared to 18 amps at 5000 theoretical lumens, the kcd (throw) is also at 48%, so now you are comparing throw from an SFT-40 at it's peak, to a SBT90.2 operating at 48% so the SFT-40 will easily out throw the SBT90.2 if you ran them at the same amps, for the SBT90.2 up til 10 amps or so, but you are correct regarding lumens - 2400 theoretical lumens is outstanding for only 6 amps at 2.86V, compared to any other single LED.
In a real flashlight because of the optics, you probably lose 5 - 15% or so, that's why I'm saying theoretical.
I thought even they have crippled it with the battery which does not gets it’s full potential?
This light seems to be having identical specs aa the wurkkos.
Fedtro. The missing factor is emitter area. 2000lm from 4mm² is more than twice as intense (throwy) as 2000lm from 9mm². A very good estimate for throw performance is lumens per square mm. Flat (domeless) emitters are near perfect lambertian radiators so it’s fairly apples to apples. Domed emitters are trickier to calculate, but in my experience, measuring apparent frontal area while viewed normal to the die is a pretty good estimate. I have a lookup table of most emitters and lights to predict kcd from each setup and it’s almost always within 10%
I agree $96 is a bit steep.