AMUTORCH XT60 Pre-sale PROMOTION! Limited time only!

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.

Hi, my apologies i havent looked at this thread since my last post - Although TomE and JaredM covered it better than i could have, i just wanted to add/respond -by saying "luminance" i was referring to the light's intensity, specifically at a given lumen output. But to be more clear, instead of stating that the sft40 will be more intense at a given lumen output (in this case 2000 lumens), i should've said it would be more intense at a given amperage which i suppose is a more accurate or context specific way to say what i was trying to convey. I was not trying to compare the sft40's lumen output to the sbt90.2, i was trying to compare their throw (candela) capabilities. anything else i would say on the matter has already been said.

JaredM, would you be able to share the “lookup table of most emitters to predict kcd within 10%”? Thanks in advance!

Hmm, yeah. I could ‘open source’ that. It’s very a sloppy and haphazard goggle-sheet thay I’ve added to over years and years… I could extract the relevant info and share it so everyone can benefit and maybe add a community sheet where folks can add reflector info for new lights that I don’t have in the table. I’ll need some time to do this though.

https://www.nealsgadgets.com/products/amutorch-xt60-flashlight

Looks like Neal is stocking an SFT40 version. Claim is 1386m or 480kcd. I doubt this is accurate, something more like 1225m or 375kcd is more realistic, but still a nice number from a 60mm bezel (with good looks imo).

Hi! I saw this a few days ago and I am wondering whether to buy an XT60 or a TC500 and change the LED to the SFT40… Both are almost the same.
I have TS30S too, but SFT40 has better throw and not heating too fast (mentioned in this thread).

Which one might have better performance on the SFT40?

XT60 has a deeper reflector it appears. Amutorch/Maxtoch also makes some of the best reflectors, so it’s even made it on my list honestly.