Group Buy Now Live - BLF GT90 SBT-90.2 powered 5,000 Lumen, 1.8Mcd / 2600m Super Thrower

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Texas_Ace
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MoreLumens wrote:
Texas_Ace wrote:
Dennis C. wrote:
MoreLumens wrote:
Any ideas if there is coming better tints for SBT-90.2 than this 5700k? 4000-5000k?

I doubt it. If I recall correctly, the warmest SBT-90 was 5700K in both standard and high-CRI versions, so I expect it’ll be the same for the SBT-90.2. I doubt we’ll ever see a high-CRI SBT-90 or SBT-90.2 in a production flashlight, but it would make a fascinating modding project….

I would LOVE a high CRI version but like you I kinda doubt it will happen due to how hard these LED’s are to get and how expensive they are.

I just might mod mine with one down the road though.

Well if there aint CRI versions then some other led will soon be the new beast that we all drool.

Very true, although sadly there are rarely LED’s that can compete with the SBT90 series from luminus, it is just a very unique LED. I would love to see some other options though.

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Texas_Ace wrote:
Tubercle wrote:
TA do you know if Lumintop is still making the GT4? Or at least know if it’s definitively canceled? I was waiting on that and don’t want to buy the GT90 if GT4 will be released eventually. Only have enough budget for 1 of them Smile

I really wish I knew. I have not gotten a peep about the GT4 in months. Heck the SBT-90.2 idea was meant for the GT4 not the GT (since running the LED’s in 4S makes it much simpler then the GT having to be converted to 1S).

I want them to make an SBT90.2 version of the GT4 but I think they are worried the price would be too high (it would be significantly higher cost then the XHP70.2 and they would most likely not recoup all the extra costs leading to lower profit margins).

Far as the GT4 itself, I am guessing that after the GT90 is finished and “on store shelves” they will start work on the GT4 again. Who knows when it will be ready for sale though. I really want it to come out as well, the prototype is one fun light. The prototype was basically ready, only a few minor issues left to work out, really surprised they did not just finish it and start selling it honestly.

They probably realized that the profitability of the GT4 won’t be as high as if they are to continue pump out variations of the FWxA or EDC0x which are much easier to make, or even the single-emitter versions of the GT; which compared to GT4 one would assume is much easier to make both in terms of # of LEDs and body-style.

At this day and age if they release a XHP70.2 version of it it won’t be nearly as competitive or as a novelty flashlight anymore as market’s saturated w/ high-powered thrower/flooder combos from other companies already.

It also makes sense why they’re hesitant on making SBT90.2 versions of the GT4 as I can only imagine how high the prices are going to be, if the GT90 costs 250-350 already, I“d guess GT4-SBT90.2 would be $400-500. There’s a huge drop-off in interest and volume of units sold if a light goes over $200. There’s just no profit-margins or volumes there to drive profits, even if it does come out, unfortunately.

I wonder if they can use the SST70 LEDs like Haikelite is using in their 4-emitter 8-18650 light.. might work better and be far cheaper.

Thanks

Texas_Ace
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Yes, these are valid concerns I have as well, part of why I want them to release it so that at least it will be released at some point lol. I don’t see it selling large quantities sadly due to the reasons you said but it is still a nice light.

Mostly I wish they would keep me in the loop on what is going on.

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Been lurking here for awhile, always amazed at the BLF GT & the other amazing lights out there, and then watched Matt’s video of this beast; now it’s sitting in my cart & I’m debating whether to click the buy button. I already have a Convoy L6 & a Sofirn SP70 and they are really great lights, but I think this is so many leagues ahead of those. I do actually use them for work, not on a daily basis so the size really wouldn’t be an issue, but I think the wow factor will be off the charts. And I suspect once released, I’ll not see a price this good in a long while. Man, decisions, decisions..

Texas_Ace
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This is in another league from the L6 for sure. It will make the L6 look like a flooder by comparison. Now weather you need a super thrower like this, that is something only you can know.

For those that actually need to see long distances for work, this is a one of a kind light.

Dennis C.
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mortuus wrote:
makes no sense the GT 4 is still not out since it was supposed to have the xhp70.2 so no led shortage or anything, they should decide if cancel one project or at least update if both lights are coming out i know lots of people wait for the GT4 to happen – they should give a small update now that its a new year and all..

SBT-90.2 based lights are hot at the moment, and the GT90 gives Lumintop a compelling competitor to the newish Acebeam K75. The GT90 is much larger than the K75, but out throws it.

In contrast 70.2 LED lights have been around for quite awhile now, there are several lights using multiple 70.2’s on the market already that will beat the GT4 in total lumen output, and (through sheer lumen output) rival if not beat it in throw. The GT4’s main benefit is running at high output for a long time without active cooling, which is harder to market as that’s not a headline stat like lumens and candella.

I also wonder if Lumintop have run into difficulties producing the GT4. It’s deep fins are certain to be more difficult to manufacture and something that could easily go wrong in the transition from handmade prototypes to full production.

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From what I have heard, production has not been much of an issue, that is part of why I stuck with a fairly simple fin arrangement vs going a bit more fancy for marginal gains in performance as it would of made production harder.

You are on point about the SBT90.2 being the hot new thing right now, which is they decided to push this light over the GT4.

ACP68
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Texas_Ace wrote:
This is in another league from the L6 for sure. It will make the L6 look like a flooder by comparison. Now weather you need a super thrower like this, that is something only you can know.

For those that actually need to see long distances for work, this is a one of a kind light.

I liked that the L6 (& the SP70) had (from my point of view) a decent combo of flood and throw for my uses. From the video it appears the GT90 has enough spill for my needs, and obviously throw. My Sofirn is pending sale to my brother atm, and the GT90 is ordered. I see a lot of maniacal laughter in my future…..

Texas_Ace
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Yes. the L6 is still high on my short list of lights everyone should own. The best general use “classic flashlight”.

Although personally I have found myself moving more towards the soda can lights to fill that role lately many still want the classic flashlight shape.

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A mile and a half of throw? But I can’t see anything that far away in broad daylight! Shocked LOL

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Rexlion wrote:
A mile and a half of throw? But I can’t see anything that far away in broad daylight! Shocked LOL

That is actually the biggest issue with getting lights this powerful lol.

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I’m going to add my $0.02 here, I’m sorry.

But this is a category of flashlight, that by shear size and cost of raw materials and (more meaningfully) machining time, CAN’T be made cheap. The most expensive part? Likely the reflector and head; a part that isn’t changing between [single emitter] versions. The battery tube is another thing that isn’t changing.

So here we have a non-standard problem needing a non-standard solution.

What would make a lot of sense to me is selling just the cell holders and emitter+driver+switch+heatsink as an assembly. Understanding that in this case the emitter is very expensive (~$50), I can still imagine that the cost of such product would be well under $100. A very magical price around this forum.

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I’m also wary of ordering from Nealsgadgets. He’s a one-man shop vs big companies like Banggood and Fasttech, sure, so no customer service. But he also isn’t passing the savings onto you. It’s not like lights from him are cheaper. Thus, what you’re getting is a complete lack of support for purchasing lights of the same price. All of my MF01s, MF01minis, 8 different FF lights were all purchased from Banggood because it’s cheaper. Hell, it’s not like he has a large warehouse he has to manage with active inventory. He probably just drop-ships all of the lights from various OEM manufacturers.
It’s like going to your podunk stick-in-the-wall single-pump gas station in the middle of nowhere that’s cash-only, and end up paying the same price for gas as the Conoco down the street.

And for those who hasn’t been burnt by Neals, it will happen.

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JaredM wrote:
I’m going to add my $0.02 here, I’m sorry.

But this is a category of flashlight, that by shear size and cost of raw materials and (more meaningfully) machining time, CAN’T be made cheap. The most expensive part? Likely the reflector and head; a part that isn’t changing between [single emitter] versions. The battery tube is another thing that isn’t changing.

So here we have a non-standard problem needing a non-standard solution.

What would make a lot of sense to me is selling just the cell holders and emitter+driver+switch+heatsink as an assembly. Understanding that in this case the emitter is very expensive (~$50), I can still imagine that the cost of such product would be well under $100. A very magical price around this forum.

This was suggested with the GT70 as well, for some reason they did not go for it.

Although if I was to pull a number out of my butt I would guess the cost for a conversion kit would be around $125-$150 since it also has to include new cell carriers and I think the reflector is different to fit this much larger LED, at least that is what they said.

I can say for sure that they will not be open to it until they have more LED’s on hand, after that I give it a small chance sadly after all the hassle that the GT70 conversion kits caused.

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I doubt they made any changes to the reflector, personally. Pixel counting in MS-Paint told me they are within 1mm of each other. The original GT had a massively oversized opening for the XHP35 which by my measurement is ~17.5mm, ~2mm more than is needed to envelop an SST90.

Anyway.. I’ll stop now.

Goodluck with the GB TA! Thank you for your contributions here

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Bought one. Thanks fellow Texan!

I love my wife’s toy poodle

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JaredM wrote:
I doubt they made any changes to the reflector, personally. Pixel counting in MS-Paint told me they are within 1mm of each other. The original GT had a massively oversized opening for the XHP35 which by my measurement is ~17.5mm, ~2mm more than is needed to envelop an SST90.

Anyway.. I’ll stop now.

Goodluck with the GB TA! Thank you for your contributions here

Just so you know, I am on your side. I was the one that pushed hard for the GT70 conversion kit when they did not want to do it at all. Sadly the results of that are what makes me think a GT90 conversion is not likely as much as I agree it would be a very nice option.

I have not given up but I do know when to pick my battles, and there is zero chance of it happening as long as they can’t get enough LED’s for the complete lights. Once the LED supply stabilizes is the time I can bring up this option and see what they say. Until then I would just be beating my head against a wall lol.

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Rexlion wrote:
A mile and a half of throw? But I can’t see anything that far away in broad daylight! Shocked LOL

Haha me too!
What I found with these super throwers that have 1.5mcd+ is that it lights up more near objects or animals VERY well, which is what I was needing since on my ranch the distances to things I want to see very clearly (put alot of light on) was further than my 600kcd lights were able to illuminate enough.

Also, that laser beam of daylight is something coyotes and foxes havent seen before, and it scares them off like a rifle shot..

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Would have been cool to see this with a top of the line buck convertor. Oh well, it’s already out of my price range.

EDC Rotation: ZL SC62(w) | Jaxman E2L XP-G2 5A | Purple S2+ XPL-HI U6-3A | D4 w/ Luxeon V | RRT-01 | Purple FW3A, 4000K SST20
EagTac D25C Ti | DQG Slim AA Ti | Jaxman E3 | UF-T1 by CRX | Olight S1 | Klarus Mini One Ti
L6 XHP70.2 P2 4000K FET+7135 | Jaxman M8 | MF02 | Jaxman Z1 CULNM1.TG | Blue S2+ w/ ML Special
Unfinished: Supfire M6 3xXHP50.2 
Others: Nitecore EC23 | Nebo Twyst | Streamlight ProTac 1AA | TerraLux LightStar 100

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Scallywag wrote:
Would have been cool to see this with a top of the line buck convertor. Oh well, it’s already out of my price range.

While a buck driver would be fantastic. With the SBT90.2 a buck driver would make the driver MUCH more expensive and less reliable. Skylumen had a lot of issues getting a buck driver to work with these LED’s and spent a LOT of money on them and he had US manufactures make them. I just don’t trust china to handle that kind of thing right now without a very good and tested reference design to work from.

That said the FET driver in the GT90 does manage to push 27A to the LED and maintains a more stable output then competing lights that do use buck drivers over time. So I would not say we are giving up much.

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mr_magoo wrote:
Rexlion wrote:
A mile and a half of throw? But I can’t see anything that far away in broad daylight! Shocked LOL

Haha me too!
What I found with these super throwers that have 1.5mcd+ is that it lights up more near objects or animals VERY well, which is what I was needing since on my ranch the distances to things I want to see very clearly (put alot of light on) was further than my 600kcd lights were able to illuminate enough.

Also, that laser beam of daylight is something coyotes and foxes havent seen before, and it scares them off like a rifle shot..

I read in another thread where people were saying animals are insensitive to bright flashlights at night. Maybe those flashlights weren’t bright enough. I blasted my W30 at a skunk and it immediately ran for its life.

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Just ordered the whole SBT90.2 kit. Thanks Texas_Ace.

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Aha, so they use a FET driver.
But is it CC or DD ?

I hope to see some SBT-90.2 emitter testing soon.
Wondering about the Vf, of course.
Can’t imagine it’s not closer to 4 Volts at such crazy currents, although Luminus’ other recent LEDs do have a low Vf.

The CCT of Luminus’ low CRI LEDs is unfortunately rather high…
I’ll consider getting a SBT-90.2 when 5000K or lower is available.
Still interesting though for an aspheric with a Wavien collar (which brings down the CCT)

For my stock 1st batch GT i’m waiting for 5000K or lower SST-70.
Should be an easy modification.

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From the K75 Driver thread, it’s been measured to run around 3.5V on turbo (~29A). So very low indeed.

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I really don’t need this, I have a Thrunite Catapult V6, a Noctigon K1, waiting for an FT03S, …

So I bought one, of course. Thanks for the GB, TA!

Edit: Does this take button-top cells like other BLF GT? Found the answer in the description. Button-top unprotected.

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If I hadnt just bought the acebeam k75, I’d be all over this. It should have better heat management (though the weight might be a bit much for extended periods)

SKV89 wrote:
mr_magoo wrote:
Rexlion wrote:
A mile and a half of throw? But I can’t see anything that far away in broad daylight! Shocked LOL

Haha me too!
What I found with these super throwers that have 1.5mcd+ is that it lights up more near objects or animals VERY well, which is what I was needing since on my ranch the distances to things I want to see very clearly (put alot of light on) was further than my 600kcd lights were able to illuminate enough.

Also, that laser beam of daylight is something coyotes and foxes havent seen before, and it scares them off like a rifle shot..

I read in another thread where people were saying animals are insensitive to bright flashlights at night. Maybe those flashlights weren’t bright enough. I blasted my W30 at a skunk and it immediately ran for its life.

It depends on the wildlife, but I think most animals are quite sensitive to white light. Other colors? varies from species to species.

Coyotes and foxes can definitely see white light beams- they bolt at the first sight of a bright beam of light where the hunting pressure is heavy so most predator hunters use a red or green filter when it’s legal to use artificial lighting.

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Jerommel wrote:
Aha, so they use a FET driver.
But is it CC or DD ?

I hope to see some SBT-90.2 emitter testing soon.
Wondering about the Vf, of course.
Can’t imagine it’s not closer to 4 Volts at such crazy currents, although Luminus’ other recent LEDs do have a low Vf.

The CCT of Luminus’ low CRI LEDs is unfortunately rather high…
I’ll consider getting a SBT-90.2 when 5000K or lower is available.
Still interesting though for an aspheric with a Wavien collar (which brings down the CCT)

For my stock 1st batch GT i’m waiting for 5000K or lower SST-70.
Should be an easy modification.


I dont have any measuring equipment, and I’m not necessarily a CRI snob, but do appreciate high cri and slightly whiter than incandescent tint when I can get it in a light form factor that fits my needs. That said, the sbt90.2 in my K75 has a quite nice tint for a coolish white, especially on the brighter modes. I’d guess it to be about 5400 to 5600k on turbo. I’m usually pretty sensitive to green and I was pleasantly suprised how creamy white the output was when I first turned it on.

I dont know if the bin is different than the sbt90.2 in my NI40 but it seems to be less prone to green on lower levels..maybe one is FET pwm driven and the other is CC. I’m sure that would make a difference. I know xpl2s look better (at least to me) when fet pwm driven.

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JaredM wrote:
From the K75 Driver thread, it’s been measured to run around 3.5V on turbo (~29A). So very low indeed.

That is indeed low.
Not really worth it to run it on an expensive (because very high current) buck driver then.

Low efficiency LED though.
50 Lumen per Watt or something..

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Jerommel wrote:
Aha, so they use a FET driver.
But is it CC or DD ?

I hope to see some SBT-90.2 emitter testing soon.
Wondering about the Vf, of course.
Can’t imagine it’s not closer to 4 Volts at such crazy currents, although Luminus’ other recent LEDs do have a low Vf.

The CCT of Luminus’ low CRI LEDs is unfortunately rather high…
I’ll consider getting a SBT-90.2 when 5000K or lower is available.
Still interesting though for an aspheric with a Wavien collar (which brings down the CCT)

For my stock 1st batch GT i’m waiting for 5000K or lower SST-70.
Should be an easy modification.

I measured the SBT-90.2 in my K30-GT at ~5200K. I’m not sure of the tint bin in the GT90 but the one in my K30-GT is quite a nasty green (mostly in the corona) at lower outputs. The FET driver in the GT90 might provide a bit better tint.

I actually find myself primarily using the lowest output modes while I’m out on my night walks.

mr_magoo wrote:
If I hadnt just bought the acebeam k75, I’d be all over this. It should have better heat management (though the weight might be a bit much for extended periods)
SKV89 wrote:
mr_magoo wrote:
Rexlion wrote:
A mile and a half of throw? But I can’t see anything that far away in broad daylight! Shocked LOL

Haha me too!
What I found with these super throwers that have 1.5mcd+ is that it lights up more near objects or animals VERY well, which is what I was needing since on my ranch the distances to things I want to see very clearly (put alot of light on) was further than my 600kcd lights were able to illuminate enough.

Also, that laser beam of daylight is something coyotes and foxes havent seen before, and it scares them off like a rifle shot..

I read in another thread where people were saying animals are insensitive to bright flashlights at night. Maybe those flashlights weren’t bright enough. I blasted my W30 at a skunk and it immediately ran for its life.

It depends on the wildlife, but I think most animals are quite sensitive to white light. Other colors? varies from species to species.

Coyotes and foxes can definitely see white light beams- they bolt at the first sight of a bright beam of light where the hunting pressure is heavy so most predator hunters use a red or green filter when it’s legal to use artificial lighting.

I see quite a bit of wildlife on my nightly trail walks, mostly small mammals and such. Some of them, like rabbits, mice and coyotes, run away at the first sign of light. Others, like raccoons, beavers and owls tend to freeze while they try to figure out what the heck the light is. If I suddenly turn off the light and they see me, then they run/fly away.

I actually had an owl swoop down at me and almost snatch my cap away after I shined a light on him for a couple minutes and then abruptly turned it off.

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I had one incident with European hare once when testing Nitecore HC30 on a field. Not sure why but that hare decided to start running towards my light when I was just standing still and I was sure it was going to attack or do something else crazy, but then it noticed me in about two meters away, made hissing sound jumping in the air freaking out, turning immediately around and running even faster away.

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