Official Group Buy Now Live! Lumintop BLF GT94 4x SBT90.2 20,000 lumen 2400m Throw monster!

24 posts / 0 new
Last post
Texas_Ace
Texas_Ace's picture
Offline
Last seen: 15 hours 38 min ago
Joined: 03/24/2016 - 07:44
Posts: 8951
Location: Everything is brighter in Texas
Official Group Buy Now Live! Lumintop BLF GT94 4x SBT90.2 20,000 lumen 2400m Throw monster!

It’s official the GT94 is finally ready for production!

This is the GT4 except with SBT90.2 LED’s.

Here is a great review by VOB of the GT94

My prototype testing showed that This light has about 1/3 less lumens but gains 3x the throw vs the GT4.

These are my rough results so far, VOB should be doing a review soon to get some comparison numbers.

For throw I got 1.4Mcd or 2,375M of throw.

The bathroom lumen test (won’t fit in my sphere) shows something around ~18-20k lumens depending on what calibration I use (needless to say it is not a precise measurement).

Most of the rest of this was copied from the GT4 GB as it is the same light besides the LED’s.

This is a beast of a light, as far as I know this is the heaviest and best passive cooling production light to exist on the consumer market. Loaded it should weigh ~7lb+!

This light has been a project I have wanted to get off the ground since the first GT back over 3 years ago. In fact in my initial pitch for the GT the second thing I pitched right behind it in the email was a quad version of the GT, aka the GT4.

It runs 4x SBT90.2 led’s powered by 8× 18650 cells for a massive ~400w+ of power!

The real standout feature of this light though is the passive cooling design. As far as I know this is going to be the best passively cooled flashlight to ever be produced for the public. In prototype testing I was able to run it on turbo until low voltage protection kicked in without reaching damaging temperatures for the light (now, your hand would not be happy with 90-100c temps but that is another subject lol).

The tint is around 5700k, at low power levels it does have a green hue but at higher power levels it is a very nice white

This is quite literally the GT90 ×4

This group buy will work much the same way the GT4 worked. The lights will be sold with a coupon code from Neals store and shipped as they are produced.

Be aware there will most likely be delays in shipping, particularly if these sell quickly. Covid is still causing delays and they are having trouble keeping up with demands as it is. Just ask me about the GT90 conversion kits I am still waiting on lol.

Here is the link and code to buy the GT4 now if you don’t want to wait for reviews:

The GT94 GB is officially live:

https://www.nealsgadgets.com/products/lumintop-blf-gt94-flashlight?aff=11

$599 regular price

COUPON: TAGT94
$150 OFF

So total price works out to $449

There is also a combo kit with 8x VTC6 cells and a Miboxer C4-12A charger that will be available

I will update as I get more information.

Edited by: Texas_Ace on 09/26/2020 - 19:24
Texas_Ace
Texas_Ace's picture
Offline
Last seen: 15 hours 38 min ago
Joined: 03/24/2016 - 07:44
Posts: 8951
Location: Everything is brighter in Texas

Here is the review I posted about my prototype a few weeks back:

Ok, just took a little time to do some quick measurements and look at the technical aspects of the GT94. VOB will be making a video review with beamshots and all that good stuff when he gets his light and has some time (have confirmed he has one coming).

This time my light got a little scratched up in shipping, seems someone is shipping the sample lights a bit differntly then the production units lol. Thinking about recommending that they attach the handle in shipping and use the foam to hold it in place in the box.

Overall everything looks fine on my sample.

Calibration is correct on mine.

The bathroom lumen test (won’t fit in my sphere) shows something around ~18-20k lumens depending on what calibration I use (needless to say it is not a precise measurement).

This falls in line with what I was expecting though and shows they are being driven very well, should be around ~30A of current at that output aka ~450w like the normal GT4.

For throw I got 1.4Mcd or 2,375M of throw.

This light has about 1/3 less lumens but gains 3x the throw vs the GT4.

It should be noted that this measurement is far from ideal as humidity is high and my throw measurements are almost always lower then others. This was also after the output tests and using HG2 cells vs VTC6. Longer range for the test would also improve numbers I am guessing. So I would not be surprised to see 1.5-1.6Mcd from others tests.

VOB has a light coming as well and it will be interesting to compare numbers, I always tend to round my numbers down so they are generally worst case numbers, I leave best case numbers to others lol.

The tint is good for a CW light, in the low modes before the main channel kicks in there is a green hue like the SBT90.2 is known for but as soon as the main channel kicks in it turns into a really nice bright white. I personally prefer NW or WW but I could live with this CW, which is high praise from me lol.

I then ran a thermal test by setting it on it’s side (like it would be used in the real world), in a room with ambient air around 27c. No airflow to speak of. Disabled the thermal stepdown and set it to turbo and let it run.

It started out at 30C and after 4 mins it was at:

60c hottest point in fins
50c at button
40c battery tube
33c handle

at 8 mins it was at:

76c hottest point in fins
68c at button
60c battery tube tapering to 50c
37c handle

at 12 mins it was at

87c hottest point in fins
77c at button
71c battery tube tapering to 61c
39c handle

Notice a trend yet? The even tempreture rise shows it has a good thermal path.

at 16 mins it was at

93c hottest point in fins
85c at button
77c battery tube tapering to 68c
45c handle

LVP kicked in at 17 mins (cells were already used some for earlier tests) with basically the same temps. The cells when pulled out were around 75c, VTC6 are rated for 80C, so just within spec.

I then hot swapped to a fresh set of cells to see what would happen if it got a bit hotter and let it get up to 105C before shutting it down.

During the ~1 min that it took me to swap carriers the light cooled down to ~83c to give an idea of hot much heat it was shedding even without airflow.

The light still works fine and no damage. I let everything cool down, recharged the cells and tested output again and actually got slightly higher numbers (slightly higher voltage cells most likely).

So basically the same thermal performance as the normal GT4, confirms they are using about the same amount of power.

The light will handle disabling the thermal protection but it is not recommended to run it until LVP except in an emergency / testing situation. The cells while still in spec if you are using VTC6 are pretty close to the limit and could be past the limit on lower quality cells.

So apply common sense if you disable the thermal control.

If you leave it at the top of the ramp instead of turbo you should easily be able to handle that power level until LVP with much lower temps and double the battery life or more due to less voltage sag etc.

Majoroverkill
Majoroverkill's picture
Offline
Last seen: 3 weeks 6 days ago
Joined: 01/12/2017 - 17:13
Posts: 961
Location: Nevada

Great torch but well past my price range Crying

Doug S.

Texas_Ace
Texas_Ace's picture
Offline
Last seen: 15 hours 38 min ago
Joined: 03/24/2016 - 07:44
Posts: 8951
Location: Everything is brighter in Texas
Majoroverkill wrote:
Great torch but well past my price range Crying

Yeah, mine too if I had not gotten a prototype review sample.

Texas_Ace
Texas_Ace's picture
Offline
Last seen: 15 hours 38 min ago
Joined: 03/24/2016 - 07:44
Posts: 8951
Location: Everything is brighter in Texas

Added VOB’s review to the OP. Glad to see his numbers lined up with my own.

richbuff
Offline
Last seen: 54 min 56 sec ago
Joined: 09/22/2015 - 20:38
Posts: 620
Location: Prescott Az

2,375 and 19,000: This compares very favorably with six other lights : X65, R90TS, R90C, HK90, MF05 and GT4. The closest cousin may be the R90C. 

It could be worse. Common dangerous pet animals don’t have antlers.

 

richbuff
Offline
Last seen: 54 min 56 sec ago
Joined: 09/22/2015 - 20:38
Posts: 620
Location: Prescott Az

 Ok, for me, this light is about two things:

This is the first light that has both significantly more throw and more lumens than the X65. (after an almost four year wait) 

And the next thing: How much more throw does this light have than the R90TS?

It could be worse. Common dangerous pet animals don’t have antlers.

 

Jaza
Offline
Last seen: 9 hours 26 min ago
Joined: 08/01/2014 - 16:40
Posts: 132
Location: Finland
Majoroverkill wrote:
Great torch but well past my price range Crying

Yeah same here… I was waiting for this, but price is 100$ more what i expected.

raccoon city
raccoon city's picture
Offline
Last seen: 1 hour 33 min ago
Joined: 10/06/2010 - 02:35
Posts: 14684
Location: रॅकून सिटी Palm Desert CA USA

@Texas_Ace:

You now have at least two thread with the word "official" spelled wrong in the title.

Texas_Ace
Texas_Ace's picture
Offline
Last seen: 15 hours 38 min ago
Joined: 03/24/2016 - 07:44
Posts: 8951
Location: Everything is brighter in Texas
raccoon city wrote:

@Texas_Ace:


You now have at least two thread with the word “official” spelled wrong in the title.

lol, that would be because I copied the first thread to make the 2nd. I will get that fixed.

raccoon city
raccoon city's picture
Offline
Last seen: 1 hour 33 min ago
Joined: 10/06/2010 - 02:35
Posts: 14684
Location: रॅकून सिटी Palm Desert CA USA

Hey, you fixed them.

Excellent!  :BEER:

(It's weird how little things like that bug me.)

Texas_Ace
Texas_Ace's picture
Offline
Last seen: 15 hours 38 min ago
Joined: 03/24/2016 - 07:44
Posts: 8951
Location: Everything is brighter in Texas
raccoon city wrote:

Hey, you fixed them.


Excellent!  alt=:" />


(It’s weird how little things like that bug me.)

Yeah, I have never claimed spelling is a strong suite for me, spell check doesn’t work in the title bars so I tend to make more mistakes there then normal. Plus I have gotten lazy over the years and just assume spell check will catch even the mistakes I notice when typing lol.

richbuff
Offline
Last seen: 54 min 56 sec ago
Joined: 09/22/2015 - 20:38
Posts: 620
Location: Prescott Az

I just pre-ordered from the link that is posted in the middle of the first post of this topic thread. I want to see for myself how the throw compares to the R90TS. Also, I have never purchased from Nealsgadgets before, and I have never purchased from Texas_Ace group buy before. Also, after a almost four year wait, this is the first light to have both significantly more throw and significantly more lumens than the X65.

Thank you, everyone, for making this King of power throwers possible!

 

My lights: http://budgetlightforum.com/comment/1636006#comment-1636006

It could be worse. Common dangerous pet animals don’t have antlers.

 

Texas_Ace
Texas_Ace's picture
Offline
Last seen: 15 hours 38 min ago
Joined: 03/24/2016 - 07:44
Posts: 8951
Location: Everything is brighter in Texas

Nice collection! This should be a fun light for you.

Expect some delays in getting these shipped out due to supply chain issues but it will show up at some point lol.

grin
Offline
Last seen: 1 day 18 hours ago
Joined: 01/05/2019 - 09:15
Posts: 500
Location: Hunter Valley, Australia

I hope the GTX490 is on the planning table. A quadGT90 making for a 250mm/10” head??

Hardusvd70
Hardusvd70's picture
Offline
Last seen: 1 hour 21 min ago
Joined: 04/09/2017 - 01:11
Posts: 296
Location: Free State

richbuff wrote:

 Ok, for me, this light is about two things:


This is the first light that has both significantly more throw and more lumens than the X65. (after an almost four year wait) 


And the next thing: How much more throw does this light have than the R90TS?


The Imalent R90TS will step down to 25% output after 1 minute and will definitely not have the throwing distance of the GT94 even at startup. And then what throw distance will you get after 1 minute? At least the GT94 will have a sustainable output.

https://youtu.be/hT0CUbpt2ls

https://1lumen.com/21700-reviews/imalent-r90ts/

Hardusvd70

richbuff
Offline
Last seen: 54 min 56 sec ago
Joined: 09/22/2015 - 20:38
Posts: 620
Location: Prescott Az

 

Thanks for your info. Soon, I will see for myself how this light compares with X65 and R90TS at turn on, 20 seconds and 45 seconds. I like to classify  lights based on max turbo at turn on. I don't run any of my lights on max after they begin to feel hot. When that happens, that is what lower modes are for. Smile

 

There are not a lot of sources for unprotected button top high drain 18650; and solder blob tops may not all be the same length, so search shows choices of Bat. Jun. Ultrafire 2400 mAh, Illumn KP 2900 or 3200 mAh 10/20A, Neals 30Q 3000mAh, and Adventure Sports/VOB VTC6 3000 mAh. I decided to go with ordering  8 x VTC6 from VOB for this light.

 

It could be worse. Common dangerous pet animals don’t have antlers.

 

Hardusvd70
Hardusvd70's picture
Offline
Last seen: 1 hour 21 min ago
Joined: 04/09/2017 - 01:11
Posts: 296
Location: Free State

Got DHL tracking number for my GT94.

Hardusvd70

Texas_Ace
Texas_Ace's picture
Offline
Last seen: 15 hours 38 min ago
Joined: 03/24/2016 - 07:44
Posts: 8951
Location: Everything is brighter in Texas

Neal just informed me there was a mistake in the assembly line that put orange peel reflectors in the GT94 by mistake.

They will be sending out Smooth reflectors that you can switch yourself if you desire. The hardest part of swapping them is opening the head, it requires a strap wrench to get it open.

After that it is a matter of being really careful to not drop the reflector on the LED’s (holding the light upsidedown and pushing the reflector up carefully while watching is the best option).

srwaite
Offline
Last seen: 1 week 4 days ago
Joined: 07/24/2017 - 18:30
Posts: 40

I received mine today. Def got an orangepeel reflector. I can’t get the damn thing to turn on though. I’m hoping its just an issue loading this battery carrier. I’m using 8 30q batteries I pulled out of my OG GT.

Texas_Ace
Texas_Ace's picture
Offline
Last seen: 15 hours 38 min ago
Joined: 03/24/2016 - 07:44
Posts: 8951
Location: Everything is brighter in Texas

They are button top cells correct?

Watch the VOB video for the GT94, he shows how to load it, give that a try.

An easy way to know if the cells are the issue is to test the voltage between the button top of the carrier and the outside ring, it should be ~16.8V with fully charged cells.

srwaite
Offline
Last seen: 1 week 4 days ago
Joined: 07/24/2017 - 18:30
Posts: 40

They ARE button tops, but maybe not the most buttony of button tops. I jacked the set of 30qs from my gt70 with smaller buttons and now the 94 works. It just didn’t like that first set of batteries. Is lumintop sending the polished reflectors automatically or do I need to contact Neal?

Texas_Ace
Texas_Ace's picture
Offline
Last seen: 15 hours 38 min ago
Joined: 03/24/2016 - 07:44
Posts: 8951
Location: Everything is brighter in Texas
srwaite wrote:
They ARE button tops, but maybe not the most buttony of button tops. I jacked the set of 30qs from my gt70 with smaller buttons and now the 94 works. It just didn’t like that first set of batteries. Is lumintop sending the polished reflectors automatically or do I need to contact Neal?

Pretty sure it will happen automatically but more details will be released once they have the reflectors I am sure. It will be a bit before they can get another batch made as I understand it.

richbuff
Offline
Last seen: 54 min 56 sec ago
Joined: 09/22/2015 - 20:38
Posts: 620
Location: Prescott Az

I got my extremely awesome GT94 on Oct 19, but since there are three topic threads for this light, just on this one forum, I did not cross-post here in this topic thread. I am thinking about getting another one of these extremely important lights for my other hand, so I can see for myself what the insanely superlative beam looks like with one of these in each hand. Is the GT94 still currently in production? If yes, are they currently being produced with smooth reflectors?

 

It could be worse. Common dangerous pet animals don’t have antlers.